./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:02:28,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:02:28,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:02:28,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:02:28,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:02:28,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:02:28,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:02:28,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:02:28,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:02:28,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:02:28,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:02:28,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:02:28,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:02:28,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:02:28,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:02:28,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:02:28,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:02:28,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:02:28,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:02:28,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:02:28,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:02:28,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:02:28,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:02:28,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:02:28,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:02:28,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:02:28,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:02:28,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:02:28,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:02:28,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:02:28,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:02:28,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:02:28,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:02:28,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:02:28,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:02:28,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:02:28,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:02:28,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:02:28,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:02:28,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:02:28,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:02:28,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:02:28,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:02:28,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:02:28,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:02:28,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:02:28,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:02:28,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:02:28,772 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:02:28,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:02:28,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:02:28,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:02:28,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:02:28,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:02:28,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:02:28,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:02:28,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:02:28,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:02:28,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:02:28,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:02:28,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:02:28,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:02:28,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:02:28,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:02:28,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:02:28,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:02:28,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:02:28,775 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:02:28,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:02:28,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:02:28,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:02:28,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-11-06 10:02:28,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:02:28,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:02:28,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:02:28,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:02:28,995 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:02:28,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-06 10:02:29,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a49e6c5/99cf9995601f4b84a48ed7c7701fd8d3/FLAG8439e9866 [2021-11-06 10:02:29,611 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:02:29,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-06 10:02:29,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a49e6c5/99cf9995601f4b84a48ed7c7701fd8d3/FLAG8439e9866 [2021-11-06 10:02:29,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a49e6c5/99cf9995601f4b84a48ed7c7701fd8d3 [2021-11-06 10:02:29,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:02:29,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:02:29,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:02:29,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:02:29,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:02:29,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:02:29" (1/1) ... [2021-11-06 10:02:29,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4953292d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:29, skipping insertion in model container [2021-11-06 10:02:29,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:02:29" (1/1) ... [2021-11-06 10:02:29,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:02:29,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:02:30,167 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-06 10:02:30,175 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-06 10:02:30,205 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:02:30,213 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:02:30,889 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:30,889 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:30,890 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:30,890 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:30,891 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:30,899 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:30,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:30,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:30,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:02:31,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:02:31,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:02:31,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:02:31,121 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:02:31,121 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:02:31,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:02:31,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:02:31,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:02:31,123 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:02:31,214 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:02:31,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,327 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:02:31,407 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:02:31,417 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-06 10:02:31,417 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-06 10:02:31,419 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:02:31,419 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:02:31,446 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,446 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,447 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,447 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,447 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,451 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,452 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,453 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,453 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:02:31,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:02:31,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:02:31,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:02:31,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:02:31,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:02:31,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:02:31,476 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:02:31,476 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:02:31,476 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:02:31,489 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:02:31,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,552 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,553 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:02:31,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:02:31,735 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:02:31,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31 WrapperNode [2021-11-06 10:02:31,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:02:31,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:02:31,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:02:31,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:02:31,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:31,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:31,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:02:31,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:02:31,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:02:31,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:02:31,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:31,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:31,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:31,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:32,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:32,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:32,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:32,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:02:32,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:02:32,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:02:32,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:02:32,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (1/1) ... [2021-11-06 10:02:32,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:02:32,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:02:32,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 10:02:32,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 10:02:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:02:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:02:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:02:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:02:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:02:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:02:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 10:02:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:02:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:02:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:02:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:02:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:02:41,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:02:41,220 INFO L299 CfgBuilder]: Removed 228 assume(true) statements. [2021-11-06 10:02:41,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:02:41 BoogieIcfgContainer [2021-11-06 10:02:41,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:02:41,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:02:41,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:02:41,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:02:41,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:02:29" (1/3) ... [2021-11-06 10:02:41,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6d872c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:02:41, skipping insertion in model container [2021-11-06 10:02:41,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31" (2/3) ... [2021-11-06 10:02:41,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6d872c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:02:41, skipping insertion in model container [2021-11-06 10:02:41,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:02:41" (3/3) ... [2021-11-06 10:02:41,228 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2021-11-06 10:02:41,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:02:41,233 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-06 10:02:41,267 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:02:41,271 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 10:02:41,271 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-06 10:02:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 389 states have (on average 1.4601542416452442) internal successors, (568), 409 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:41,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 10:02:41,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:41,293 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:41,293 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:02:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash -127780390, now seen corresponding path program 1 times [2021-11-06 10:02:41,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:41,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109421020] [2021-11-06 10:02:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:41,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:41,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:41,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109421020] [2021-11-06 10:02:41,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109421020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:41,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:41,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:02:41,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511725496] [2021-11-06 10:02:41,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:02:41,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:02:41,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:02:41,837 INFO L87 Difference]: Start difference. First operand has 410 states, 389 states have (on average 1.4601542416452442) internal successors, (568), 409 states have internal predecessors, (568), 0 states have call successors, (0), 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 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:41,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:41,872 INFO L93 Difference]: Finished difference Result 813 states and 1127 transitions. [2021-11-06 10:02:41,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:02:41,873 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-06 10:02:41,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:41,882 INFO L225 Difference]: With dead ends: 813 [2021-11-06 10:02:41,882 INFO L226 Difference]: Without dead ends: 405 [2021-11-06 10:02:41,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:02:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-06 10:02:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-11-06 10:02:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 385 states have (on average 1.3324675324675326) internal successors, (513), 404 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 513 transitions. [2021-11-06 10:02:41,933 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 513 transitions. Word has length 39 [2021-11-06 10:02:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:41,933 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 513 transitions. [2021-11-06 10:02:41,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 513 transitions. [2021-11-06 10:02:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 10:02:41,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:41,935 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:41,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:02:41,935 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:02:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:41,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1892452164, now seen corresponding path program 1 times [2021-11-06 10:02:41,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:41,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619133128] [2021-11-06 10:02:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:41,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:42,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:42,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619133128] [2021-11-06 10:02:42,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619133128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:42,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:42,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:02:42,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308333376] [2021-11-06 10:02:42,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:02:42,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:02:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:02:42,194 INFO L87 Difference]: Start difference. First operand 405 states and 513 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:42,460 INFO L93 Difference]: Finished difference Result 787 states and 995 transitions. [2021-11-06 10:02:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:02:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 10:02:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:42,463 INFO L225 Difference]: With dead ends: 787 [2021-11-06 10:02:42,463 INFO L226 Difference]: Without dead ends: 405 [2021-11-06 10:02:42,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:02:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-06 10:02:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-11-06 10:02:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 385 states have (on average 1.3246753246753247) internal successors, (510), 404 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 510 transitions. [2021-11-06 10:02:42,477 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 510 transitions. Word has length 41 [2021-11-06 10:02:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:42,477 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 510 transitions. [2021-11-06 10:02:42,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 510 transitions. [2021-11-06 10:02:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 10:02:42,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:42,479 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:42,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:02:42,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:02:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1022569822, now seen corresponding path program 1 times [2021-11-06 10:02:42,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:42,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389707149] [2021-11-06 10:02:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:42,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:42,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:42,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389707149] [2021-11-06 10:02:42,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389707149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:42,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:42,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:02:42,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795566367] [2021-11-06 10:02:42,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:02:42,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:02:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:02:42,730 INFO L87 Difference]: Start difference. First operand 405 states and 510 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:43,266 INFO L93 Difference]: Finished difference Result 950 states and 1220 transitions. [2021-11-06 10:02:43,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:02:43,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-06 10:02:43,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:43,268 INFO L225 Difference]: With dead ends: 950 [2021-11-06 10:02:43,268 INFO L226 Difference]: Without dead ends: 559 [2021-11-06 10:02:43,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:02:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-06 10:02:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 419. [2021-11-06 10:02:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 399 states have (on average 1.31328320802005) internal successors, (524), 418 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 524 transitions. [2021-11-06 10:02:43,279 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 524 transitions. Word has length 53 [2021-11-06 10:02:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:43,280 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 524 transitions. [2021-11-06 10:02:43,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 524 transitions. [2021-11-06 10:02:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 10:02:43,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:43,281 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:43,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:02:43,281 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:02:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:43,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1446216544, now seen corresponding path program 1 times [2021-11-06 10:02:43,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:43,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303757140] [2021-11-06 10:02:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:43,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:43,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:43,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303757140] [2021-11-06 10:02:43,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303757140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:43,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:43,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:02:43,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96190642] [2021-11-06 10:02:43,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:02:43,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:02:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:02:43,491 INFO L87 Difference]: Start difference. First operand 419 states and 524 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:43,962 INFO L93 Difference]: Finished difference Result 884 states and 1115 transitions. [2021-11-06 10:02:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:02:43,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-06 10:02:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:43,967 INFO L225 Difference]: With dead ends: 884 [2021-11-06 10:02:43,967 INFO L226 Difference]: Without dead ends: 489 [2021-11-06 10:02:43,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:02:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-06 10:02:43,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 433. [2021-11-06 10:02:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 413 states have (on average 1.3026634382566586) internal successors, (538), 432 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 538 transitions. [2021-11-06 10:02:43,976 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 538 transitions. Word has length 53 [2021-11-06 10:02:43,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:43,977 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 538 transitions. [2021-11-06 10:02:43,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:43,977 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 538 transitions. [2021-11-06 10:02:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 10:02:43,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:43,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:43,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:02:43,985 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:02:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1497261274, now seen corresponding path program 1 times [2021-11-06 10:02:43,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:43,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361014367] [2021-11-06 10:02:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:43,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:44,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:44,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361014367] [2021-11-06 10:02:44,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361014367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:44,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:44,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:02:44,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337893414] [2021-11-06 10:02:44,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:02:44,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:44,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:02:44,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:02:44,194 INFO L87 Difference]: Start difference. First operand 433 states and 538 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:44,363 INFO L93 Difference]: Finished difference Result 819 states and 1016 transitions. [2021-11-06 10:02:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:02:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-06 10:02:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:44,366 INFO L225 Difference]: With dead ends: 819 [2021-11-06 10:02:44,366 INFO L226 Difference]: Without dead ends: 433 [2021-11-06 10:02:44,366 INFO L786 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 [2021-11-06 10:02:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-06 10:02:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2021-11-06 10:02:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 413 states have (on average 1.297820823244552) internal successors, (536), 432 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 536 transitions. [2021-11-06 10:02:44,373 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 536 transitions. Word has length 53 [2021-11-06 10:02:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:44,373 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 536 transitions. [2021-11-06 10:02:44,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 536 transitions. [2021-11-06 10:02:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 10:02:44,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:44,374 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:44,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:02:44,374 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:02:44,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:44,375 INFO L85 PathProgramCache]: Analyzing trace with hash -98028523, now seen corresponding path program 1 times [2021-11-06 10:02:44,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:44,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845573303] [2021-11-06 10:02:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:44,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:44,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:44,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845573303] [2021-11-06 10:02:44,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845573303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:44,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:44,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:02:44,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023159584] [2021-11-06 10:02:44,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:02:44,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:44,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:02:44,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:02:44,710 INFO L87 Difference]: Start difference. First operand 433 states and 536 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-11-06 10:02:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:45,059 INFO L93 Difference]: Finished difference Result 785 states and 968 transitions. [2021-11-06 10:02:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:02:45,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 [2021-11-06 10:02:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:45,068 INFO L225 Difference]: With dead ends: 785 [2021-11-06 10:02:45,068 INFO L226 Difference]: Without dead ends: 433 [2021-11-06 10:02:45,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:02:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-06 10:02:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2021-11-06 10:02:45,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 413 states have (on average 1.2857142857142858) internal successors, (531), 432 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 531 transitions. [2021-11-06 10:02:45,076 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 531 transitions. Word has length 55 [2021-11-06 10:02:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:45,077 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 531 transitions. [2021-11-06 10:02:45,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-11-06 10:02:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 531 transitions. [2021-11-06 10:02:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 10:02:45,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:45,078 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:45,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:02:45,078 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:02:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1918822000, now seen corresponding path program 1 times [2021-11-06 10:02:45,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:45,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113965016] [2021-11-06 10:02:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:45,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:46,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:46,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113965016] [2021-11-06 10:02:46,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113965016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:46,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:46,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:02:46,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954375366] [2021-11-06 10:02:46,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:02:46,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:46,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:02:46,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:02:46,140 INFO L87 Difference]: Start difference. First operand 433 states and 531 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) [2021-11-06 10:02:54,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:54,766 INFO L93 Difference]: Finished difference Result 965 states and 1172 transitions. [2021-11-06 10:02:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:02:54,767 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 [2021-11-06 10:02:54,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:54,769 INFO L225 Difference]: With dead ends: 965 [2021-11-06 10:02:54,769 INFO L226 Difference]: Without dead ends: 625 [2021-11-06 10:02:54,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:02:54,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-11-06 10:02:54,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 478. [2021-11-06 10:02:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 458 states have (on average 1.2816593886462881) internal successors, (587), 477 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 587 transitions. [2021-11-06 10:02:54,783 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 587 transitions. Word has length 57 [2021-11-06 10:02:54,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:54,784 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 587 transitions. [2021-11-06 10:02:54,784 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) [2021-11-06 10:02:54,784 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 587 transitions. [2021-11-06 10:02:54,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 10:02:54,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:54,786 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:54,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:02:54,786 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:02:54,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:54,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1112224199, now seen corresponding path program 1 times [2021-11-06 10:02:54,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:54,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114125665] [2021-11-06 10:02:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:54,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:55,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:55,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114125665] [2021-11-06 10:02:55,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114125665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:55,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:55,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:02:55,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678683696] [2021-11-06 10:02:55,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:02:55,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:02:55,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:02:55,122 INFO L87 Difference]: Start difference. First operand 478 states and 587 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:55,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:02:55,366 INFO L93 Difference]: Finished difference Result 1004 states and 1218 transitions. [2021-11-06 10:02:55,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:02:55,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-06 10:02:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:02:55,369 INFO L225 Difference]: With dead ends: 1004 [2021-11-06 10:02:55,369 INFO L226 Difference]: Without dead ends: 942 [2021-11-06 10:02:55,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:02:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-11-06 10:02:55,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 480. [2021-11-06 10:02:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 460 states have (on average 1.2804347826086957) internal successors, (589), 479 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 589 transitions. [2021-11-06 10:02:55,384 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 589 transitions. Word has length 57 [2021-11-06 10:02:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:02:55,384 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 589 transitions. [2021-11-06 10:02:55,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:02:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 589 transitions. [2021-11-06 10:02:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 10:02:55,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:02:55,385 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:02:55,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 10:02:55,385 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:02:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:02:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1112235122, now seen corresponding path program 1 times [2021-11-06 10:02:55,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:02:55,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801747183] [2021-11-06 10:02:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:02:55,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:02:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:02:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:02:59,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:02:59,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801747183] [2021-11-06 10:02:59,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801747183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:02:59,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:02:59,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:02:59,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942164758] [2021-11-06 10:02:59,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:02:59,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:02:59,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:02:59,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:02:59,625 INFO L87 Difference]: Start difference. First operand 480 states and 589 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) [2021-11-06 10:03:05,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:03:05,686 INFO L93 Difference]: Finished difference Result 990 states and 1222 transitions. [2021-11-06 10:03:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:03:05,687 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 [2021-11-06 10:03:05,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:03:05,689 INFO L225 Difference]: With dead ends: 990 [2021-11-06 10:03:05,689 INFO L226 Difference]: Without dead ends: 536 [2021-11-06 10:03:05,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:03:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-11-06 10:03:05,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 478. [2021-11-06 10:03:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 458 states have (on average 1.279475982532751) internal successors, (586), 477 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 586 transitions. [2021-11-06 10:03:05,701 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 586 transitions. Word has length 57 [2021-11-06 10:03:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:03:05,702 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 586 transitions. [2021-11-06 10:03:05,702 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) [2021-11-06 10:03:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 586 transitions. [2021-11-06 10:03:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 10:03:05,702 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:03:05,703 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:03:05,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 10:03:05,703 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:03:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:03:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1723970498, now seen corresponding path program 1 times [2021-11-06 10:03:05,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:03:05,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883131885] [2021-11-06 10:03:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:03:05,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:03:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:03:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:03:06,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:03:06,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883131885] [2021-11-06 10:03:06,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883131885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:03:06,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:03:06,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:03:06,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086041759] [2021-11-06 10:03:06,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:03:06,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:03:06,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:03:06,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:03:06,808 INFO L87 Difference]: Start difference. First operand 478 states and 586 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:17,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:03:17,877 INFO L93 Difference]: Finished difference Result 952 states and 1154 transitions. [2021-11-06 10:03:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:03:17,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-06 10:03:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:03:17,882 INFO L225 Difference]: With dead ends: 952 [2021-11-06 10:03:17,882 INFO L226 Difference]: Without dead ends: 950 [2021-11-06 10:03:17,883 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:03:17,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2021-11-06 10:03:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 631. [2021-11-06 10:03:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 611 states have (on average 1.2896890343698855) internal successors, (788), 630 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 788 transitions. [2021-11-06 10:03:17,903 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 788 transitions. Word has length 61 [2021-11-06 10:03:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:03:17,904 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 788 transitions. [2021-11-06 10:03:17,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 788 transitions. [2021-11-06 10:03:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 10:03:17,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:03:17,905 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:03:17,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 10:03:17,905 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:03:17,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:03:17,906 INFO L85 PathProgramCache]: Analyzing trace with hash 419396586, now seen corresponding path program 1 times [2021-11-06 10:03:17,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:03:17,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064472361] [2021-11-06 10:03:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:03:17,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:03:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:03:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:03:18,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:03:18,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064472361] [2021-11-06 10:03:18,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064472361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:03:18,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:03:18,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:03:18,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578444468] [2021-11-06 10:03:18,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:03:18,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:03:18,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:03:18,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:03:18,498 INFO L87 Difference]: Start difference. First operand 631 states and 788 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2021-11-06 10:03:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:03:19,759 INFO L93 Difference]: Finished difference Result 1475 states and 1823 transitions. [2021-11-06 10:03:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:03:19,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 [2021-11-06 10:03:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:03:19,762 INFO L225 Difference]: With dead ends: 1475 [2021-11-06 10:03:19,762 INFO L226 Difference]: Without dead ends: 857 [2021-11-06 10:03:19,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:03:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2021-11-06 10:03:19,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 631. [2021-11-06 10:03:19,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 611 states have (on average 1.2847790507364976) internal successors, (785), 630 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 785 transitions. [2021-11-06 10:03:19,782 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 785 transitions. Word has length 64 [2021-11-06 10:03:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:03:19,782 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 785 transitions. [2021-11-06 10:03:19,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2021-11-06 10:03:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 785 transitions. [2021-11-06 10:03:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 10:03:19,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:03:19,783 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:03:19,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 10:03:19,784 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:03:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:03:19,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1217407611, now seen corresponding path program 1 times [2021-11-06 10:03:19,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:03:19,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486804279] [2021-11-06 10:03:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:03:19,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:03:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:03:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:03:22,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:03:22,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486804279] [2021-11-06 10:03:22,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486804279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:03:22,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:03:22,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:03:22,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795059725] [2021-11-06 10:03:22,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:03:22,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:03:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:03:22,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:03:22,355 INFO L87 Difference]: Start difference. First operand 631 states and 785 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 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) [2021-11-06 10:03:44,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:03:44,419 INFO L93 Difference]: Finished difference Result 946 states and 1145 transitions. [2021-11-06 10:03:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:03:44,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 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 [2021-11-06 10:03:44,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:03:44,422 INFO L225 Difference]: With dead ends: 946 [2021-11-06 10:03:44,423 INFO L226 Difference]: Without dead ends: 944 [2021-11-06 10:03:44,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-11-06 10:03:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-11-06 10:03:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 639. [2021-11-06 10:03:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 619 states have (on average 1.2843295638126009) internal successors, (795), 638 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 795 transitions. [2021-11-06 10:03:44,443 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 795 transitions. Word has length 66 [2021-11-06 10:03:44,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:03:44,444 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 795 transitions. [2021-11-06 10:03:44,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 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) [2021-11-06 10:03:44,444 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 795 transitions. [2021-11-06 10:03:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 10:03:44,445 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:03:44,445 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:03:44,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 10:03:44,445 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:03:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:03:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash 4892174, now seen corresponding path program 1 times [2021-11-06 10:03:44,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:03:44,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764247401] [2021-11-06 10:03:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:03:44,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:03:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:03:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:03:44,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:03:44,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764247401] [2021-11-06 10:03:44,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764247401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:03:44,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:03:44,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:03:44,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697206255] [2021-11-06 10:03:44,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:03:44,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:03:44,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:03:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:03:44,721 INFO L87 Difference]: Start difference. First operand 639 states and 795 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2021-11-06 10:03:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:03:45,111 INFO L93 Difference]: Finished difference Result 867 states and 1071 transitions. [2021-11-06 10:03:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:03:45,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 [2021-11-06 10:03:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:03:45,114 INFO L225 Difference]: With dead ends: 867 [2021-11-06 10:03:45,114 INFO L226 Difference]: Without dead ends: 639 [2021-11-06 10:03:45,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:03:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-06 10:03:45,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2021-11-06 10:03:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 619 states have (on average 1.2730210016155088) internal successors, (788), 638 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 788 transitions. [2021-11-06 10:03:45,133 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 788 transitions. Word has length 67 [2021-11-06 10:03:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:03:45,133 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 788 transitions. [2021-11-06 10:03:45,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2021-11-06 10:03:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 788 transitions. [2021-11-06 10:03:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 10:03:45,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:03:45,134 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:03:45,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 10:03:45,136 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:03:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:03:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -344410535, now seen corresponding path program 1 times [2021-11-06 10:03:45,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:03:45,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010301786] [2021-11-06 10:03:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:03:45,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:03:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:03:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:03:45,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:03:45,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010301786] [2021-11-06 10:03:45,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010301786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:03:45,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:03:45,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:03:45,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294847273] [2021-11-06 10:03:45,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:03:45,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:03:45,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:03:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:03:45,659 INFO L87 Difference]: Start difference. First operand 639 states and 788 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:03:46,948 INFO L93 Difference]: Finished difference Result 1343 states and 1635 transitions. [2021-11-06 10:03:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:03:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 10:03:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:03:46,950 INFO L225 Difference]: With dead ends: 1343 [2021-11-06 10:03:46,950 INFO L226 Difference]: Without dead ends: 775 [2021-11-06 10:03:46,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:03:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-06 10:03:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 639. [2021-11-06 10:03:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 619 states have (on average 1.2681744749596122) internal successors, (785), 638 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 785 transitions. [2021-11-06 10:03:46,970 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 785 transitions. Word has length 67 [2021-11-06 10:03:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:03:46,971 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 785 transitions. [2021-11-06 10:03:46,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:46,971 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 785 transitions. [2021-11-06 10:03:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 10:03:46,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:03:46,972 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:03:46,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 10:03:46,972 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:03:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:03:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2005786055, now seen corresponding path program 1 times [2021-11-06 10:03:46,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:03:46,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145619133] [2021-11-06 10:03:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:03:46,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:03:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:03:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:03:47,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:03:47,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145619133] [2021-11-06 10:03:47,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145619133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:03:47,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:03:47,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:03:47,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863406232] [2021-11-06 10:03:47,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:03:47,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:03:47,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:03:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:03:47,640 INFO L87 Difference]: Start difference. First operand 639 states and 785 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:03:59,150 INFO L93 Difference]: Finished difference Result 1310 states and 1610 transitions. [2021-11-06 10:03:59,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:03:59,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 10:03:59,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:03:59,154 INFO L225 Difference]: With dead ends: 1310 [2021-11-06 10:03:59,154 INFO L226 Difference]: Without dead ends: 1242 [2021-11-06 10:03:59,157 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:03:59,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-06 10:03:59,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 854. [2021-11-06 10:03:59,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 834 states have (on average 1.2709832134292567) internal successors, (1060), 853 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:59,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1060 transitions. [2021-11-06 10:03:59,184 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1060 transitions. Word has length 68 [2021-11-06 10:03:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:03:59,184 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1060 transitions. [2021-11-06 10:03:59,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:03:59,184 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1060 transitions. [2021-11-06 10:03:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 10:03:59,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:03:59,185 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:03:59,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 10:03:59,185 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:03:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:03:59,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1029644236, now seen corresponding path program 1 times [2021-11-06 10:03:59,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:03:59,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137603001] [2021-11-06 10:03:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:03:59,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:03:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:03:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:03:59,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:03:59,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137603001] [2021-11-06 10:03:59,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137603001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:03:59,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:03:59,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:03:59,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721667855] [2021-11-06 10:03:59,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:03:59,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:03:59,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:03:59,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:03:59,583 INFO L87 Difference]: Start difference. First operand 854 states and 1060 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2021-11-06 10:04:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:04:05,415 INFO L93 Difference]: Finished difference Result 2099 states and 2579 transitions. [2021-11-06 10:04:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:04:05,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 [2021-11-06 10:04:05,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:04:05,419 INFO L225 Difference]: With dead ends: 2099 [2021-11-06 10:04:05,419 INFO L226 Difference]: Without dead ends: 1336 [2021-11-06 10:04:05,420 INFO L786 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 [2021-11-06 10:04:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-11-06 10:04:05,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 854. [2021-11-06 10:04:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 834 states have (on average 1.2517985611510791) internal successors, (1044), 853 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1044 transitions. [2021-11-06 10:04:05,448 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1044 transitions. Word has length 69 [2021-11-06 10:04:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:04:05,448 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1044 transitions. [2021-11-06 10:04:05,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2021-11-06 10:04:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1044 transitions. [2021-11-06 10:04:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 10:04:05,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:04:05,449 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:04:05,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 10:04:05,449 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:04:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:04:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1021339762, now seen corresponding path program 1 times [2021-11-06 10:04:05,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:04:05,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930775426] [2021-11-06 10:04:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:04:05,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:04:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:04:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:04:06,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:04:06,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930775426] [2021-11-06 10:04:06,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930775426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:04:06,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:04:06,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:04:06,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54736133] [2021-11-06 10:04:06,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:04:06,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:04:06,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:04:06,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:04:06,128 INFO L87 Difference]: Start difference. First operand 854 states and 1044 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) [2021-11-06 10:04:13,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:04:13,712 INFO L93 Difference]: Finished difference Result 1709 states and 2066 transitions. [2021-11-06 10:04:13,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:04:13,712 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 [2021-11-06 10:04:13,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:04:13,715 INFO L225 Difference]: With dead ends: 1709 [2021-11-06 10:04:13,715 INFO L226 Difference]: Without dead ends: 1023 [2021-11-06 10:04:13,716 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:04:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2021-11-06 10:04:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 898. [2021-11-06 10:04:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 878 states have (on average 1.2403189066059226) internal successors, (1089), 897 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1089 transitions. [2021-11-06 10:04:13,739 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1089 transitions. Word has length 69 [2021-11-06 10:04:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:04:13,740 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 1089 transitions. [2021-11-06 10:04:13,740 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) [2021-11-06 10:04:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1089 transitions. [2021-11-06 10:04:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 10:04:13,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:04:13,740 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:04:13,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 10:04:13,741 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:04:13,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:04:13,741 INFO L85 PathProgramCache]: Analyzing trace with hash 38573891, now seen corresponding path program 1 times [2021-11-06 10:04:13,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:04:13,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149440292] [2021-11-06 10:04:13,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:04:13,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:04:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:04:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:04:14,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:04:14,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149440292] [2021-11-06 10:04:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149440292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:04:14,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:04:14,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:04:14,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854298575] [2021-11-06 10:04:14,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:04:14,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:04:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:04:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:04:14,025 INFO L87 Difference]: Start difference. First operand 898 states and 1089 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:04:14,829 INFO L93 Difference]: Finished difference Result 1398 states and 1667 transitions. [2021-11-06 10:04:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:04:14,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 10:04:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:04:14,833 INFO L225 Difference]: With dead ends: 1398 [2021-11-06 10:04:14,833 INFO L226 Difference]: Without dead ends: 1388 [2021-11-06 10:04:14,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:04:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2021-11-06 10:04:14,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 946. [2021-11-06 10:04:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 926 states have (on average 1.2278617710583153) internal successors, (1137), 945 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1137 transitions. [2021-11-06 10:04:14,862 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1137 transitions. Word has length 73 [2021-11-06 10:04:14,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:04:14,862 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1137 transitions. [2021-11-06 10:04:14,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1137 transitions. [2021-11-06 10:04:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 10:04:14,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:04:14,863 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:04:14,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 10:04:14,863 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:04:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:04:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1888682136, now seen corresponding path program 1 times [2021-11-06 10:04:14,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:04:14,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386702434] [2021-11-06 10:04:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:04:14,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:04:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:04:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:04:15,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:04:15,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386702434] [2021-11-06 10:04:15,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386702434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:04:15,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:04:15,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:04:15,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220309139] [2021-11-06 10:04:15,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:04:15,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:04:15,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:04:15,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:04:15,444 INFO L87 Difference]: Start difference. First operand 946 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:27,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:04:27,850 INFO L93 Difference]: Finished difference Result 2554 states and 3065 transitions. [2021-11-06 10:04:27,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:04:27,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-06 10:04:27,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:04:27,854 INFO L225 Difference]: With dead ends: 2554 [2021-11-06 10:04:27,854 INFO L226 Difference]: Without dead ends: 1602 [2021-11-06 10:04:27,856 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:04:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-11-06 10:04:27,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1006. [2021-11-06 10:04:27,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 986 states have (on average 1.218052738336714) internal successors, (1201), 1005 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1201 transitions. [2021-11-06 10:04:27,885 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1201 transitions. Word has length 74 [2021-11-06 10:04:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:04:27,885 INFO L470 AbstractCegarLoop]: Abstraction has 1006 states and 1201 transitions. [2021-11-06 10:04:27,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1201 transitions. [2021-11-06 10:04:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 10:04:27,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:04:27,886 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:04:27,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 10:04:27,887 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:04:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:04:27,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1494315350, now seen corresponding path program 1 times [2021-11-06 10:04:27,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:04:27,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271098028] [2021-11-06 10:04:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:04:27,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:04:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:04:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:04:29,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:04:29,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271098028] [2021-11-06 10:04:29,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271098028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:04:29,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:04:29,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:04:29,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124642562] [2021-11-06 10:04:29,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:04:29,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:04:29,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:04:29,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:04:29,063 INFO L87 Difference]: Start difference. First operand 1006 states and 1201 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:04:43,814 INFO L93 Difference]: Finished difference Result 2998 states and 3535 transitions. [2021-11-06 10:04:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-06 10:04:43,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-06 10:04:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:04:43,821 INFO L225 Difference]: With dead ends: 2998 [2021-11-06 10:04:43,821 INFO L226 Difference]: Without dead ends: 2880 [2021-11-06 10:04:43,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 10:04:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2021-11-06 10:04:43,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1050. [2021-11-06 10:04:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1030 states have (on average 1.2135922330097086) internal successors, (1250), 1049 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1250 transitions. [2021-11-06 10:04:43,855 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1250 transitions. Word has length 74 [2021-11-06 10:04:43,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:04:43,856 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1250 transitions. [2021-11-06 10:04:43,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:43,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1250 transitions. [2021-11-06 10:04:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 10:04:43,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:04:43,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:04:43,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 10:04:43,857 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:04:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:04:43,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1025517010, now seen corresponding path program 1 times [2021-11-06 10:04:43,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:04:43,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28153498] [2021-11-06 10:04:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:04:43,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:04:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:04:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:04:50,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:04:50,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28153498] [2021-11-06 10:04:50,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28153498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:04:50,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:04:50,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:04:50,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803549577] [2021-11-06 10:04:50,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:04:50,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:04:50,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:04:50,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:04:50,322 INFO L87 Difference]: Start difference. First operand 1050 states and 1250 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:59,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:04:59,306 INFO L93 Difference]: Finished difference Result 1393 states and 1634 transitions. [2021-11-06 10:04:59,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 10:04:59,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-06 10:04:59,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:04:59,310 INFO L225 Difference]: With dead ends: 1393 [2021-11-06 10:04:59,310 INFO L226 Difference]: Without dead ends: 1391 [2021-11-06 10:04:59,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:04:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2021-11-06 10:04:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1050. [2021-11-06 10:04:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1030 states have (on average 1.2116504854368932) internal successors, (1248), 1049 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1248 transitions. [2021-11-06 10:04:59,345 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1248 transitions. Word has length 74 [2021-11-06 10:04:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:04:59,345 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1248 transitions. [2021-11-06 10:04:59,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:04:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1248 transitions. [2021-11-06 10:04:59,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 10:04:59,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:04:59,346 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:04:59,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 10:04:59,347 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:04:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:04:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 44168579, now seen corresponding path program 1 times [2021-11-06 10:04:59,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:04:59,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231443462] [2021-11-06 10:04:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:04:59,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:05:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:05:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:05:01,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:05:01,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231443462] [2021-11-06 10:05:01,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231443462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:05:01,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:05:01,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:05:01,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910123969] [2021-11-06 10:05:01,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:05:01,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:05:01,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:05:01,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:05:01,171 INFO L87 Difference]: Start difference. First operand 1050 states and 1248 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:05:06,800 INFO L93 Difference]: Finished difference Result 2123 states and 2524 transitions. [2021-11-06 10:05:06,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:05:06,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-06 10:05:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:05:06,803 INFO L225 Difference]: With dead ends: 2123 [2021-11-06 10:05:06,804 INFO L226 Difference]: Without dead ends: 1228 [2021-11-06 10:05:06,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:05:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-11-06 10:05:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1192. [2021-11-06 10:05:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 1172 states have (on average 1.204778156996587) internal successors, (1412), 1191 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1412 transitions. [2021-11-06 10:05:06,841 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1412 transitions. Word has length 75 [2021-11-06 10:05:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:05:06,841 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1412 transitions. [2021-11-06 10:05:06,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1412 transitions. [2021-11-06 10:05:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 10:05:06,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:05:06,843 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:05:06,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 10:05:06,843 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:05:06,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:05:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1660405051, now seen corresponding path program 1 times [2021-11-06 10:05:06,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:05:06,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329852867] [2021-11-06 10:05:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:05:06,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:05:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:05:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:05:07,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:05:07,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329852867] [2021-11-06 10:05:07,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329852867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:05:07,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:05:07,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:05:07,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944222765] [2021-11-06 10:05:07,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:05:07,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:05:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:05:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:05:07,222 INFO L87 Difference]: Start difference. First operand 1192 states and 1412 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:10,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:05:10,777 INFO L93 Difference]: Finished difference Result 2954 states and 3478 transitions. [2021-11-06 10:05:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:05:10,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 10:05:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:05:10,782 INFO L225 Difference]: With dead ends: 2954 [2021-11-06 10:05:10,782 INFO L226 Difference]: Without dead ends: 1773 [2021-11-06 10:05:10,783 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:05:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2021-11-06 10:05:10,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1190. [2021-11-06 10:05:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1170 states have (on average 1.1905982905982906) internal successors, (1393), 1189 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1393 transitions. [2021-11-06 10:05:10,823 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1393 transitions. Word has length 77 [2021-11-06 10:05:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:05:10,823 INFO L470 AbstractCegarLoop]: Abstraction has 1190 states and 1393 transitions. [2021-11-06 10:05:10,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1393 transitions. [2021-11-06 10:05:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 10:05:10,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:05:10,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:05:10,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 10:05:10,825 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:05:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:05:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1954503875, now seen corresponding path program 1 times [2021-11-06 10:05:10,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:05:10,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712541295] [2021-11-06 10:05:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:05:10,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:05:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:05:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:05:12,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:05:12,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712541295] [2021-11-06 10:05:12,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712541295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:05:12,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:05:12,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:05:12,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691691724] [2021-11-06 10:05:12,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:05:12,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:05:12,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:05:12,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:05:12,811 INFO L87 Difference]: Start difference. First operand 1190 states and 1393 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:26,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:05:26,649 INFO L93 Difference]: Finished difference Result 2320 states and 2690 transitions. [2021-11-06 10:05:26,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-06 10:05:26,650 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 10:05:26,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:05:26,654 INFO L225 Difference]: With dead ends: 2320 [2021-11-06 10:05:26,654 INFO L226 Difference]: Without dead ends: 1581 [2021-11-06 10:05:26,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2021-11-06 10:05:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-11-06 10:05:26,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1172. [2021-11-06 10:05:26,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1152 states have (on average 1.1883680555555556) internal successors, (1369), 1171 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1369 transitions. [2021-11-06 10:05:26,695 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1369 transitions. Word has length 77 [2021-11-06 10:05:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:05:26,695 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1369 transitions. [2021-11-06 10:05:26,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:26,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1369 transitions. [2021-11-06 10:05:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 10:05:26,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:05:26,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:05:26,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 10:05:26,696 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:05:26,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:05:26,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1314431118, now seen corresponding path program 1 times [2021-11-06 10:05:26,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:05:26,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12012658] [2021-11-06 10:05:26,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:05:26,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:05:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:05:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:05:29,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:05:29,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12012658] [2021-11-06 10:05:29,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12012658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:05:29,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:05:29,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:05:29,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993452281] [2021-11-06 10:05:29,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:05:29,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:05:29,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:05:29,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:05:29,029 INFO L87 Difference]: Start difference. First operand 1172 states and 1369 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:43,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:05:43,891 INFO L93 Difference]: Finished difference Result 2619 states and 3052 transitions. [2021-11-06 10:05:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:05:43,891 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 10:05:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:05:43,904 INFO L225 Difference]: With dead ends: 2619 [2021-11-06 10:05:43,904 INFO L226 Difference]: Without dead ends: 1820 [2021-11-06 10:05:43,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:05:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-11-06 10:05:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1461. [2021-11-06 10:05:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1441 states have (on average 1.1665510062456628) internal successors, (1681), 1460 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1681 transitions. [2021-11-06 10:05:43,953 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1681 transitions. Word has length 83 [2021-11-06 10:05:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:05:43,953 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1681 transitions. [2021-11-06 10:05:43,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1681 transitions. [2021-11-06 10:05:43,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 10:05:43,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:05:43,955 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:05:43,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 10:05:43,955 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:05:43,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:05:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1154252017, now seen corresponding path program 1 times [2021-11-06 10:05:43,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:05:43,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698099173] [2021-11-06 10:05:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:05:43,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:05:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:05:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:05:48,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:05:48,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698099173] [2021-11-06 10:05:48,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698099173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:05:48,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:05:48,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:05:48,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327692871] [2021-11-06 10:05:48,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:05:48,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:05:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:05:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:05:48,855 INFO L87 Difference]: Start difference. First operand 1461 states and 1681 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:05:57,365 INFO L93 Difference]: Finished difference Result 1999 states and 2289 transitions. [2021-11-06 10:05:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:05:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 10:05:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:05:57,370 INFO L225 Difference]: With dead ends: 1999 [2021-11-06 10:05:57,370 INFO L226 Difference]: Without dead ends: 1627 [2021-11-06 10:05:57,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:05:57,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-11-06 10:05:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1401. [2021-11-06 10:05:57,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1381 states have (on average 1.160753077480087) internal successors, (1603), 1400 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1603 transitions. [2021-11-06 10:05:57,419 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1603 transitions. Word has length 84 [2021-11-06 10:05:57,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:05:57,419 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 1603 transitions. [2021-11-06 10:05:57,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:05:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1603 transitions. [2021-11-06 10:05:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 10:05:57,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:05:57,421 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:05:57,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 10:05:57,421 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:05:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:05:57,421 INFO L85 PathProgramCache]: Analyzing trace with hash -278758165, now seen corresponding path program 1 times [2021-11-06 10:05:57,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:05:57,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724999957] [2021-11-06 10:05:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:05:57,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:05:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:05:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:05:58,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:05:58,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724999957] [2021-11-06 10:05:58,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724999957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:05:58,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:05:58,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:05:58,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691819365] [2021-11-06 10:05:58,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:05:58,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:05:58,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:05:58,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:05:58,359 INFO L87 Difference]: Start difference. First operand 1401 states and 1603 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:06:11,214 INFO L93 Difference]: Finished difference Result 2465 states and 2815 transitions. [2021-11-06 10:06:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 10:06:11,215 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 10:06:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:06:11,218 INFO L225 Difference]: With dead ends: 2465 [2021-11-06 10:06:11,218 INFO L226 Difference]: Without dead ends: 2250 [2021-11-06 10:06:11,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2021-11-06 10:06:11,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-11-06 10:06:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1564. [2021-11-06 10:06:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1544 states have (on average 1.1599740932642486) internal successors, (1791), 1563 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1791 transitions. [2021-11-06 10:06:11,279 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1791 transitions. Word has length 84 [2021-11-06 10:06:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:06:11,279 INFO L470 AbstractCegarLoop]: Abstraction has 1564 states and 1791 transitions. [2021-11-06 10:06:11,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1791 transitions. [2021-11-06 10:06:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 10:06:11,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:06:11,280 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:06:11,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 10:06:11,281 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:06:11,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:06:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash 401300205, now seen corresponding path program 1 times [2021-11-06 10:06:11,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:06:11,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127140984] [2021-11-06 10:06:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:06:11,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:06:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:06:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:06:11,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:06:11,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127140984] [2021-11-06 10:06:11,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127140984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:06:11,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:06:11,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:06:11,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461350242] [2021-11-06 10:06:11,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:06:11,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:06:11,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:06:11,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:06:11,617 INFO L87 Difference]: Start difference. First operand 1564 states and 1791 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:06:14,832 INFO L93 Difference]: Finished difference Result 2138 states and 2448 transitions. [2021-11-06 10:06:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:06:14,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 10:06:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:06:14,835 INFO L225 Difference]: With dead ends: 2138 [2021-11-06 10:06:14,835 INFO L226 Difference]: Without dead ends: 1765 [2021-11-06 10:06:14,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:06:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2021-11-06 10:06:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1552. [2021-11-06 10:06:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1532 states have (on average 1.150130548302872) internal successors, (1762), 1551 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 1762 transitions. [2021-11-06 10:06:14,895 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 1762 transitions. Word has length 84 [2021-11-06 10:06:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:06:14,896 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 1762 transitions. [2021-11-06 10:06:14,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 1762 transitions. [2021-11-06 10:06:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 10:06:14,897 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:06:14,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:06:14,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 10:06:14,898 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:06:14,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:06:14,898 INFO L85 PathProgramCache]: Analyzing trace with hash 380773357, now seen corresponding path program 1 times [2021-11-06 10:06:14,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:06:14,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628225507] [2021-11-06 10:06:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:06:14,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:06:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:06:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:06:15,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:06:15,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628225507] [2021-11-06 10:06:15,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628225507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:06:15,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:06:15,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:06:15,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695916477] [2021-11-06 10:06:15,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:06:15,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:06:15,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:06:15,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:06:15,848 INFO L87 Difference]: Start difference. First operand 1552 states and 1762 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:25,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:06:25,106 INFO L93 Difference]: Finished difference Result 3005 states and 3388 transitions. [2021-11-06 10:06:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 10:06:25,107 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 10:06:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:06:25,110 INFO L225 Difference]: With dead ends: 3005 [2021-11-06 10:06:25,110 INFO L226 Difference]: Without dead ends: 2245 [2021-11-06 10:06:25,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2021-11-06 10:06:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2021-11-06 10:06:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 1446. [2021-11-06 10:06:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1426 states have (on average 1.1451612903225807) internal successors, (1633), 1445 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1633 transitions. [2021-11-06 10:06:25,163 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1633 transitions. Word has length 84 [2021-11-06 10:06:25,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:06:25,163 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1633 transitions. [2021-11-06 10:06:25,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:25,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1633 transitions. [2021-11-06 10:06:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 10:06:25,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:06:25,164 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:06:25,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 10:06:25,165 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:06:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:06:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1305406481, now seen corresponding path program 1 times [2021-11-06 10:06:25,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:06:25,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237257811] [2021-11-06 10:06:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:06:25,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:06:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:06:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:06:30,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:06:30,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237257811] [2021-11-06 10:06:30,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237257811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:06:30,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:06:30,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:06:30,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666333814] [2021-11-06 10:06:30,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:06:30,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:06:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:06:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:06:30,438 INFO L87 Difference]: Start difference. First operand 1446 states and 1633 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:51,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:06:51,654 INFO L93 Difference]: Finished difference Result 1899 states and 2140 transitions. [2021-11-06 10:06:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:06:51,655 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 10:06:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:06:51,657 INFO L225 Difference]: With dead ends: 1899 [2021-11-06 10:06:51,657 INFO L226 Difference]: Without dead ends: 1679 [2021-11-06 10:06:51,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2021-11-06 10:06:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-11-06 10:06:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1441. [2021-11-06 10:06:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1421 states have (on average 1.1428571428571428) internal successors, (1624), 1440 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1624 transitions. [2021-11-06 10:06:51,735 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1624 transitions. Word has length 84 [2021-11-06 10:06:51,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:06:51,735 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1624 transitions. [2021-11-06 10:06:51,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:06:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1624 transitions. [2021-11-06 10:06:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:06:51,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:06:51,737 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:06:51,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 10:06:51,737 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:06:51,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:06:51,738 INFO L85 PathProgramCache]: Analyzing trace with hash 325168929, now seen corresponding path program 1 times [2021-11-06 10:06:51,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:06:51,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749836413] [2021-11-06 10:06:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:06:51,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:06:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:06:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:06:53,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:06:53,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749836413] [2021-11-06 10:06:53,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749836413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:06:53,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:06:53,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:06:53,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507267113] [2021-11-06 10:06:53,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:06:53,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:06:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:06:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:06:53,966 INFO L87 Difference]: Start difference. First operand 1441 states and 1624 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:07:01,461 INFO L93 Difference]: Finished difference Result 1552 states and 1735 transitions. [2021-11-06 10:07:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:07:01,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:07:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:07:01,464 INFO L225 Difference]: With dead ends: 1552 [2021-11-06 10:07:01,464 INFO L226 Difference]: Without dead ends: 1550 [2021-11-06 10:07:01,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:07:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-11-06 10:07:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1439. [2021-11-06 10:07:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1420 states have (on average 1.1422535211267606) internal successors, (1622), 1438 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1622 transitions. [2021-11-06 10:07:01,518 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1622 transitions. Word has length 85 [2021-11-06 10:07:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:07:01,519 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 1622 transitions. [2021-11-06 10:07:01,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1622 transitions. [2021-11-06 10:07:01,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:07:01,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:07:01,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:07:01,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 10:07:01,520 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:07:01,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:07:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash -481508826, now seen corresponding path program 1 times [2021-11-06 10:07:01,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:07:01,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251299671] [2021-11-06 10:07:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:07:01,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:07:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:07:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:07:01,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:07:01,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251299671] [2021-11-06 10:07:01,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251299671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:07:01,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:07:01,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:07:01,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080419531] [2021-11-06 10:07:01,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:07:01,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:07:01,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:07:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:07:01,876 INFO L87 Difference]: Start difference. First operand 1439 states and 1622 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:07:03,340 INFO L93 Difference]: Finished difference Result 1877 states and 2123 transitions. [2021-11-06 10:07:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:07:03,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-06 10:07:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:07:03,342 INFO L225 Difference]: With dead ends: 1877 [2021-11-06 10:07:03,342 INFO L226 Difference]: Without dead ends: 1867 [2021-11-06 10:07:03,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:07:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2021-11-06 10:07:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1497. [2021-11-06 10:07:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1478 states have (on average 1.1366711772665765) internal successors, (1680), 1496 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1680 transitions. [2021-11-06 10:07:03,400 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1680 transitions. Word has length 86 [2021-11-06 10:07:03,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:07:03,400 INFO L470 AbstractCegarLoop]: Abstraction has 1497 states and 1680 transitions. [2021-11-06 10:07:03,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1680 transitions. [2021-11-06 10:07:03,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:07:03,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:07:03,401 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:07:03,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 10:07:03,402 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:07:03,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:07:03,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1290855452, now seen corresponding path program 1 times [2021-11-06 10:07:03,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:07:03,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950769660] [2021-11-06 10:07:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:07:03,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:07:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:07:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:07:04,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:07:04,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950769660] [2021-11-06 10:07:04,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950769660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:07:04,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:07:04,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:07:04,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904136790] [2021-11-06 10:07:04,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:07:04,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:07:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:07:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:07:04,414 INFO L87 Difference]: Start difference. First operand 1497 states and 1680 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:07:25,677 INFO L93 Difference]: Finished difference Result 2244 states and 2510 transitions. [2021-11-06 10:07:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-06 10:07:25,677 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-06 10:07:25,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:07:25,680 INFO L225 Difference]: With dead ends: 2244 [2021-11-06 10:07:25,680 INFO L226 Difference]: Without dead ends: 2018 [2021-11-06 10:07:25,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 10:07:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2021-11-06 10:07:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1495. [2021-11-06 10:07:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1476 states have (on average 1.1334688346883468) internal successors, (1673), 1494 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:25,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 1673 transitions. [2021-11-06 10:07:25,760 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 1673 transitions. Word has length 86 [2021-11-06 10:07:25,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:07:25,760 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 1673 transitions. [2021-11-06 10:07:25,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:25,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 1673 transitions. [2021-11-06 10:07:25,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:07:25,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:07:25,761 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:07:25,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-06 10:07:25,761 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:07:25,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:07:25,761 INFO L85 PathProgramCache]: Analyzing trace with hash -57409048, now seen corresponding path program 1 times [2021-11-06 10:07:25,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:07:25,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032247015] [2021-11-06 10:07:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:07:25,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:07:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:07:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:07:28,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:07:28,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032247015] [2021-11-06 10:07:28,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032247015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:07:28,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:07:28,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:07:28,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118596531] [2021-11-06 10:07:28,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:07:28,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:07:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:07:28,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:07:28,933 INFO L87 Difference]: Start difference. First operand 1495 states and 1673 transitions. Second operand has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:07:55,185 INFO L93 Difference]: Finished difference Result 2283 states and 2543 transitions. [2021-11-06 10:07:55,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-06 10:07:55,186 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-06 10:07:55,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:07:55,188 INFO L225 Difference]: With dead ends: 2283 [2021-11-06 10:07:55,188 INFO L226 Difference]: Without dead ends: 2271 [2021-11-06 10:07:55,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1034, Invalid=4516, Unknown=0, NotChecked=0, Total=5550 [2021-11-06 10:07:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2021-11-06 10:07:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 1531. [2021-11-06 10:07:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1513 states have (on average 1.1381361533377397) internal successors, (1722), 1530 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1722 transitions. [2021-11-06 10:07:55,251 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1722 transitions. Word has length 86 [2021-11-06 10:07:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:07:55,251 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 1722 transitions. [2021-11-06 10:07:55,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:07:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1722 transitions. [2021-11-06 10:07:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 10:07:55,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:07:55,253 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:07:55,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-06 10:07:55,253 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:07:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:07:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1922117552, now seen corresponding path program 1 times [2021-11-06 10:07:55,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:07:55,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366534330] [2021-11-06 10:07:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:07:55,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:07:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:07:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:07:56,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:07:56,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366534330] [2021-11-06 10:07:56,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366534330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:07:56,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:07:56,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:07:56,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041122016] [2021-11-06 10:07:56,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:07:56,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:07:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:07:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:07:56,007 INFO L87 Difference]: Start difference. First operand 1531 states and 1722 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:08:07,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:08:07,889 INFO L93 Difference]: Finished difference Result 1818 states and 2035 transitions. [2021-11-06 10:08:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:08:07,890 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-06 10:08:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:08:07,892 INFO L225 Difference]: With dead ends: 1818 [2021-11-06 10:08:07,892 INFO L226 Difference]: Without dead ends: 1757 [2021-11-06 10:08:07,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:08:07,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2021-11-06 10:08:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1531. [2021-11-06 10:08:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1513 states have (on average 1.1361533377395903) internal successors, (1719), 1530 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:08:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1719 transitions. [2021-11-06 10:08:07,953 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1719 transitions. Word has length 88 [2021-11-06 10:08:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:08:07,954 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 1719 transitions. [2021-11-06 10:08:07,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:08:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1719 transitions. [2021-11-06 10:08:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 10:08:07,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:08:07,955 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:08:07,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-06 10:08:07,955 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:08:07,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:08:07,955 INFO L85 PathProgramCache]: Analyzing trace with hash -939839562, now seen corresponding path program 1 times [2021-11-06 10:08:07,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:08:07,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359484184] [2021-11-06 10:08:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:08:07,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:08:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:08:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:08:11,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:08:11,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359484184] [2021-11-06 10:08:11,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359484184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:08:11,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:08:11,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:08:11,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566379040] [2021-11-06 10:08:11,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:08:11,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:08:11,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:08:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:08:11,562 INFO L87 Difference]: Start difference. First operand 1531 states and 1719 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:08:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:08:21,788 INFO L93 Difference]: Finished difference Result 1996 states and 2229 transitions. [2021-11-06 10:08:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:08:21,789 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-06 10:08:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:08:21,792 INFO L225 Difference]: With dead ends: 1996 [2021-11-06 10:08:21,792 INFO L226 Difference]: Without dead ends: 1914 [2021-11-06 10:08:21,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:08:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2021-11-06 10:08:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1515. [2021-11-06 10:08:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1497 states have (on average 1.1315965263861056) internal successors, (1694), 1514 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:08:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1694 transitions. [2021-11-06 10:08:21,853 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1694 transitions. Word has length 88 [2021-11-06 10:08:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:08:21,853 INFO L470 AbstractCegarLoop]: Abstraction has 1515 states and 1694 transitions. [2021-11-06 10:08:21,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:08:21,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1694 transitions. [2021-11-06 10:08:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 10:08:21,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:08:21,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:08:21,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 10:08:21,855 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:08:21,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:08:21,855 INFO L85 PathProgramCache]: Analyzing trace with hash -216245460, now seen corresponding path program 1 times [2021-11-06 10:08:21,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:08:21,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072618548] [2021-11-06 10:08:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:08:21,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:08:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:08:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:08:24,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:08:24,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072618548] [2021-11-06 10:08:24,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072618548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:08:24,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:08:24,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-06 10:08:24,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105339898] [2021-11-06 10:08:24,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-06 10:08:24,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:08:24,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-06 10:08:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:08:24,614 INFO L87 Difference]: Start difference. First operand 1515 states and 1694 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:08:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:08:53,421 INFO L93 Difference]: Finished difference Result 2501 states and 2779 transitions. [2021-11-06 10:08:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-06 10:08:53,421 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-06 10:08:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:08:53,425 INFO L225 Difference]: With dead ends: 2501 [2021-11-06 10:08:53,425 INFO L226 Difference]: Without dead ends: 2440 [2021-11-06 10:08:53,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1463 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1061, Invalid=4195, Unknown=0, NotChecked=0, Total=5256 [2021-11-06 10:08:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2021-11-06 10:08:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 1554. [2021-11-06 10:08:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1536 states have (on average 1.1282552083333333) internal successors, (1733), 1553 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:08:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1733 transitions. [2021-11-06 10:08:53,493 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1733 transitions. Word has length 88 [2021-11-06 10:08:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:08:53,493 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 1733 transitions. [2021-11-06 10:08:53,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:08:53,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1733 transitions. [2021-11-06 10:08:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:08:53,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:08:53,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:08:53,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-06 10:08:53,494 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:08:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:08:53,495 INFO L85 PathProgramCache]: Analyzing trace with hash 908052616, now seen corresponding path program 1 times [2021-11-06 10:08:53,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:08:53,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768183468] [2021-11-06 10:08:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:08:53,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:08:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:08:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:08:57,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:08:57,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768183468] [2021-11-06 10:08:57,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768183468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:08:57,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:08:57,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:08:57,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882711943] [2021-11-06 10:08:57,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:08:57,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:08:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:08:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:08:57,636 INFO L87 Difference]: Start difference. First operand 1554 states and 1733 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:06,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:09:06,983 INFO L93 Difference]: Finished difference Result 1816 states and 2019 transitions. [2021-11-06 10:09:06,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 10:09:06,984 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-06 10:09:06,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:09:06,986 INFO L225 Difference]: With dead ends: 1816 [2021-11-06 10:09:06,986 INFO L226 Difference]: Without dead ends: 1755 [2021-11-06 10:09:06,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-11-06 10:09:06,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-11-06 10:09:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1512. [2021-11-06 10:09:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1494 states have (on average 1.1291834002677377) internal successors, (1687), 1511 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1687 transitions. [2021-11-06 10:09:07,054 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1687 transitions. Word has length 93 [2021-11-06 10:09:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:09:07,054 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 1687 transitions. [2021-11-06 10:09:07,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1687 transitions. [2021-11-06 10:09:07,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:09:07,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:09:07,055 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:09:07,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-06 10:09:07,055 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:09:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:09:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1132542281, now seen corresponding path program 1 times [2021-11-06 10:09:07,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:09:07,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128397429] [2021-11-06 10:09:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:09:07,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:09:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:09:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:09:07,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:09:07,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128397429] [2021-11-06 10:09:07,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128397429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:09:07,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:09:07,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:09:07,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197232103] [2021-11-06 10:09:07,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:09:07,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:09:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:09:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:09:07,337 INFO L87 Difference]: Start difference. First operand 1512 states and 1687 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:09:08,046 INFO L93 Difference]: Finished difference Result 1844 states and 2044 transitions. [2021-11-06 10:09:08,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:09:08,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-06 10:09:08,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:09:08,049 INFO L225 Difference]: With dead ends: 1844 [2021-11-06 10:09:08,049 INFO L226 Difference]: Without dead ends: 1834 [2021-11-06 10:09:08,049 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:09:08,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2021-11-06 10:09:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1536. [2021-11-06 10:09:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1518 states have (on average 1.127140974967062) internal successors, (1711), 1535 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 1711 transitions. [2021-11-06 10:09:08,116 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 1711 transitions. Word has length 93 [2021-11-06 10:09:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:09:08,116 INFO L470 AbstractCegarLoop]: Abstraction has 1536 states and 1711 transitions. [2021-11-06 10:09:08,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 1711 transitions. [2021-11-06 10:09:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 10:09:08,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:09:08,118 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:09:08,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-06 10:09:08,118 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:09:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:09:08,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1187021564, now seen corresponding path program 1 times [2021-11-06 10:09:08,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:09:08,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231713580] [2021-11-06 10:09:08,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:09:08,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:09:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:09:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:09:11,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:09:11,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231713580] [2021-11-06 10:09:11,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231713580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:09:11,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:09:11,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:09:11,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804459849] [2021-11-06 10:09:11,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:09:11,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:09:11,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:09:11,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:09:11,288 INFO L87 Difference]: Start difference. First operand 1536 states and 1711 transitions. Second operand has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:09:30,745 INFO L93 Difference]: Finished difference Result 2135 states and 2366 transitions. [2021-11-06 10:09:30,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:09:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 10:09:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:09:30,749 INFO L225 Difference]: With dead ends: 2135 [2021-11-06 10:09:30,749 INFO L226 Difference]: Without dead ends: 2133 [2021-11-06 10:09:30,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2021-11-06 10:09:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2021-11-06 10:09:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1618. [2021-11-06 10:09:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1600 states have (on average 1.13) internal successors, (1808), 1617 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 1808 transitions. [2021-11-06 10:09:30,856 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 1808 transitions. Word has length 97 [2021-11-06 10:09:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:09:30,856 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 1808 transitions. [2021-11-06 10:09:30,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 1808 transitions. [2021-11-06 10:09:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 10:09:30,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:09:30,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:09:30,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-06 10:09:30,858 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:09:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:09:30,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1187032487, now seen corresponding path program 1 times [2021-11-06 10:09:30,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:09:30,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487133050] [2021-11-06 10:09:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:09:30,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:09:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:09:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:09:31,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:09:31,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487133050] [2021-11-06 10:09:31,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487133050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:09:31,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:09:31,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:09:31,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138798730] [2021-11-06 10:09:31,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:09:31,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:09:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:09:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:09:31,002 INFO L87 Difference]: Start difference. First operand 1618 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:09:31,128 INFO L93 Difference]: Finished difference Result 1792 states and 2003 transitions. [2021-11-06 10:09:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:09:31,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 10:09:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:09:31,130 INFO L225 Difference]: With dead ends: 1792 [2021-11-06 10:09:31,130 INFO L226 Difference]: Without dead ends: 1682 [2021-11-06 10:09:31,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:09:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-06 10:09:31,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1608. [2021-11-06 10:09:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1590 states have (on average 1.1264150943396227) internal successors, (1791), 1607 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 1791 transitions. [2021-11-06 10:09:31,202 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 1791 transitions. Word has length 97 [2021-11-06 10:09:31,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:09:31,211 INFO L470 AbstractCegarLoop]: Abstraction has 1608 states and 1791 transitions. [2021-11-06 10:09:31,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:31,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 1791 transitions. [2021-11-06 10:09:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 10:09:31,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:09:31,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:09:31,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-06 10:09:31,213 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:09:31,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:09:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1358083631, now seen corresponding path program 1 times [2021-11-06 10:09:31,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:09:31,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252594509] [2021-11-06 10:09:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:09:31,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:09:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:09:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:09:31,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:09:31,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252594509] [2021-11-06 10:09:31,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252594509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:09:31,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:09:31,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:09:31,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624921067] [2021-11-06 10:09:31,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:09:31,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:09:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:09:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:09:31,913 INFO L87 Difference]: Start difference. First operand 1608 states and 1791 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:09:48,706 INFO L93 Difference]: Finished difference Result 2219 states and 2448 transitions. [2021-11-06 10:09:48,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 10:09:48,707 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 10:09:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:09:48,709 INFO L225 Difference]: With dead ends: 2219 [2021-11-06 10:09:48,709 INFO L226 Difference]: Without dead ends: 1882 [2021-11-06 10:09:48,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=265, Invalid=665, Unknown=0, NotChecked=0, Total=930 [2021-11-06 10:09:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2021-11-06 10:09:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1453. [2021-11-06 10:09:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1435 states have (on average 1.1282229965156794) internal successors, (1619), 1452 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1619 transitions. [2021-11-06 10:09:48,785 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1619 transitions. Word has length 97 [2021-11-06 10:09:48,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:09:48,785 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1619 transitions. [2021-11-06 10:09:48,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1619 transitions. [2021-11-06 10:09:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 10:09:48,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:09:48,787 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:09:48,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-06 10:09:48,787 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:09:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:09:48,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1123753018, now seen corresponding path program 1 times [2021-11-06 10:09:48,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:09:48,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845918996] [2021-11-06 10:09:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:09:48,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:09:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:09:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:09:49,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:09:49,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845918996] [2021-11-06 10:09:49,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845918996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:09:49,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:09:49,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:09:49,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188712594] [2021-11-06 10:09:49,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:09:49,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:09:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:09:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:09:49,635 INFO L87 Difference]: Start difference. First operand 1453 states and 1619 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:52,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:09:52,901 INFO L93 Difference]: Finished difference Result 1511 states and 1677 transitions. [2021-11-06 10:09:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:09:52,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-06 10:09:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:09:52,903 INFO L225 Difference]: With dead ends: 1511 [2021-11-06 10:09:52,903 INFO L226 Difference]: Without dead ends: 1509 [2021-11-06 10:09:52,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:09:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-06 10:09:52,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1479. [2021-11-06 10:09:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1461 states have (on average 1.1286789869952087) internal successors, (1649), 1478 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1649 transitions. [2021-11-06 10:09:52,982 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1649 transitions. Word has length 99 [2021-11-06 10:09:52,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:09:52,982 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 1649 transitions. [2021-11-06 10:09:52,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:09:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1649 transitions. [2021-11-06 10:09:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 10:09:52,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:09:52,983 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:09:52,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-06 10:09:52,983 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:09:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:09:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1890021852, now seen corresponding path program 1 times [2021-11-06 10:09:52,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:09:52,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289860463] [2021-11-06 10:09:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:09:52,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:10:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:10:04,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:10:04,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:10:04,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289860463] [2021-11-06 10:10:04,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289860463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:10:04,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:10:04,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:10:04,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995655946] [2021-11-06 10:10:04,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:10:04,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:10:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:10:04,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:10:04,986 INFO L87 Difference]: Start difference. First operand 1479 states and 1649 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:10:07,767 INFO L93 Difference]: Finished difference Result 1510 states and 1676 transitions. [2021-11-06 10:10:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:10:07,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-06 10:10:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:10:07,769 INFO L225 Difference]: With dead ends: 1510 [2021-11-06 10:10:07,769 INFO L226 Difference]: Without dead ends: 1508 [2021-11-06 10:10:07,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:10:07,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-11-06 10:10:07,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1481. [2021-11-06 10:10:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1463 states have (on average 1.128503075871497) internal successors, (1651), 1480 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1651 transitions. [2021-11-06 10:10:07,842 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1651 transitions. Word has length 101 [2021-11-06 10:10:07,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:10:07,842 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 1651 transitions. [2021-11-06 10:10:07,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1651 transitions. [2021-11-06 10:10:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-06 10:10:07,843 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:10:07,844 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:10:07,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-06 10:10:07,844 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:10:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:10:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash -4485664, now seen corresponding path program 1 times [2021-11-06 10:10:07,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:10:07,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171123098] [2021-11-06 10:10:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:10:07,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:10:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:10:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:10:07,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:10:07,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171123098] [2021-11-06 10:10:07,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171123098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:10:07,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:10:07,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:10:07,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495323280] [2021-11-06 10:10:07,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:10:07,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:10:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:10:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:10:07,990 INFO L87 Difference]: Start difference. First operand 1481 states and 1651 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:10:08,144 INFO L93 Difference]: Finished difference Result 1738 states and 1933 transitions. [2021-11-06 10:10:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:10:08,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-06 10:10:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:10:08,147 INFO L225 Difference]: With dead ends: 1738 [2021-11-06 10:10:08,147 INFO L226 Difference]: Without dead ends: 1594 [2021-11-06 10:10:08,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:10:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2021-11-06 10:10:08,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1430. [2021-11-06 10:10:08,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1413 states have (on average 1.1252653927813163) internal successors, (1590), 1429 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1590 transitions. [2021-11-06 10:10:08,218 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1590 transitions. Word has length 102 [2021-11-06 10:10:08,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:10:08,218 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 1590 transitions. [2021-11-06 10:10:08,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:08,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1590 transitions. [2021-11-06 10:10:08,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 10:10:08,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:10:08,219 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:10:08,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-06 10:10:08,219 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:10:08,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:10:08,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1374522805, now seen corresponding path program 1 times [2021-11-06 10:10:08,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:10:08,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665583901] [2021-11-06 10:10:08,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:10:08,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:10:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:10:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:10:09,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:10:09,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665583901] [2021-11-06 10:10:09,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665583901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:10:09,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:10:09,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:10:09,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610969798] [2021-11-06 10:10:09,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:10:09,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:10:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:10:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:10:09,910 INFO L87 Difference]: Start difference. First operand 1430 states and 1590 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:10:13,148 INFO L93 Difference]: Finished difference Result 1454 states and 1611 transitions. [2021-11-06 10:10:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:10:13,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-06 10:10:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:10:13,150 INFO L225 Difference]: With dead ends: 1454 [2021-11-06 10:10:13,150 INFO L226 Difference]: Without dead ends: 1449 [2021-11-06 10:10:13,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:10:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-11-06 10:10:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1435. [2021-11-06 10:10:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1418 states have (on average 1.124823695345557) internal successors, (1595), 1434 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1595 transitions. [2021-11-06 10:10:13,223 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1595 transitions. Word has length 104 [2021-11-06 10:10:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:10:13,223 INFO L470 AbstractCegarLoop]: Abstraction has 1435 states and 1595 transitions. [2021-11-06 10:10:13,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1595 transitions. [2021-11-06 10:10:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 10:10:13,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:10:13,225 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:10:13,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-06 10:10:13,225 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:10:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:10:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1341945069, now seen corresponding path program 1 times [2021-11-06 10:10:13,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:10:13,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966090920] [2021-11-06 10:10:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:10:13,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:10:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:10:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:10:13,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:10:13,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966090920] [2021-11-06 10:10:13,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966090920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:10:13,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:10:13,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:10:13,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876841647] [2021-11-06 10:10:13,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:10:13,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:10:13,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:10:13,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:10:13,788 INFO L87 Difference]: Start difference. First operand 1435 states and 1595 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:10:16,811 INFO L93 Difference]: Finished difference Result 1468 states and 1627 transitions. [2021-11-06 10:10:16,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:10:16,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 10:10:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:10:16,812 INFO L225 Difference]: With dead ends: 1468 [2021-11-06 10:10:16,812 INFO L226 Difference]: Without dead ends: 1320 [2021-11-06 10:10:16,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:10:16,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-11-06 10:10:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1312. [2021-11-06 10:10:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1295 states have (on average 1.1312741312741312) internal successors, (1465), 1311 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1465 transitions. [2021-11-06 10:10:16,878 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1465 transitions. Word has length 106 [2021-11-06 10:10:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:10:16,878 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 1465 transitions. [2021-11-06 10:10:16,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1465 transitions. [2021-11-06 10:10:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 10:10:16,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:10:16,879 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:10:16,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-06 10:10:16,880 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:10:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:10:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1774066147, now seen corresponding path program 1 times [2021-11-06 10:10:16,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:10:16,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210569070] [2021-11-06 10:10:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:10:16,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:10:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:10:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:10:17,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:10:17,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210569070] [2021-11-06 10:10:17,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210569070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:10:17,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:10:17,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:10:17,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582204078] [2021-11-06 10:10:17,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:10:17,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:10:17,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:10:17,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:10:17,377 INFO L87 Difference]: Start difference. First operand 1312 states and 1465 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:25,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:10:25,932 INFO L93 Difference]: Finished difference Result 1442 states and 1602 transitions. [2021-11-06 10:10:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:10:25,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-06 10:10:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:10:25,934 INFO L225 Difference]: With dead ends: 1442 [2021-11-06 10:10:25,934 INFO L226 Difference]: Without dead ends: 1313 [2021-11-06 10:10:25,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:10:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-11-06 10:10:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1290. [2021-11-06 10:10:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1273 states have (on average 1.1319717203456403) internal successors, (1441), 1289 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1441 transitions. [2021-11-06 10:10:26,003 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1441 transitions. Word has length 112 [2021-11-06 10:10:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:10:26,004 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 1441 transitions. [2021-11-06 10:10:26,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1441 transitions. [2021-11-06 10:10:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 10:10:26,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:10:26,005 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:10:26,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-06 10:10:26,005 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:10:26,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:10:26,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2027049217, now seen corresponding path program 1 times [2021-11-06 10:10:26,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:10:26,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143381795] [2021-11-06 10:10:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:10:26,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:10:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:10:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:10:26,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:10:26,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143381795] [2021-11-06 10:10:26,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143381795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:10:26,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:10:26,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:10:26,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017313642] [2021-11-06 10:10:26,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:10:26,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:10:26,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:10:26,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:10:26,590 INFO L87 Difference]: Start difference. First operand 1290 states and 1441 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:10:34,528 INFO L93 Difference]: Finished difference Result 1669 states and 1860 transitions. [2021-11-06 10:10:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:10:34,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-06 10:10:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:10:34,530 INFO L225 Difference]: With dead ends: 1669 [2021-11-06 10:10:34,530 INFO L226 Difference]: Without dead ends: 1465 [2021-11-06 10:10:34,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:10:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-11-06 10:10:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1229. [2021-11-06 10:10:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1212 states have (on average 1.1287128712871286) internal successors, (1368), 1228 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1368 transitions. [2021-11-06 10:10:34,592 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1368 transitions. Word has length 112 [2021-11-06 10:10:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:10:34,593 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1368 transitions. [2021-11-06 10:10:34,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:34,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1368 transitions. [2021-11-06 10:10:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 10:10:34,594 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:10:34,594 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:10:34,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-06 10:10:34,594 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:10:34,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:10:34,594 INFO L85 PathProgramCache]: Analyzing trace with hash -66625064, now seen corresponding path program 1 times [2021-11-06 10:10:34,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:10:34,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753893209] [2021-11-06 10:10:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:10:34,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:10:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:10:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:10:35,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:10:35,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753893209] [2021-11-06 10:10:35,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753893209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:10:35,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:10:35,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:10:35,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738162628] [2021-11-06 10:10:35,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:10:35,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:10:35,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:10:35,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:10:35,167 INFO L87 Difference]: Start difference. First operand 1229 states and 1368 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:10:46,744 INFO L93 Difference]: Finished difference Result 1712 states and 1904 transitions. [2021-11-06 10:10:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:10:46,745 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-06 10:10:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:10:46,746 INFO L225 Difference]: With dead ends: 1712 [2021-11-06 10:10:46,746 INFO L226 Difference]: Without dead ends: 1653 [2021-11-06 10:10:46,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:10:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-11-06 10:10:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1374. [2021-11-06 10:10:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1357 states have (on average 1.1319086219602064) internal successors, (1536), 1373 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1536 transitions. [2021-11-06 10:10:46,820 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1536 transitions. Word has length 113 [2021-11-06 10:10:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:10:46,820 INFO L470 AbstractCegarLoop]: Abstraction has 1374 states and 1536 transitions. [2021-11-06 10:10:46,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:10:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1536 transitions. [2021-11-06 10:10:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 10:10:46,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:10:46,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:10:46,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-06 10:10:46,821 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:10:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:10:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1366385118, now seen corresponding path program 1 times [2021-11-06 10:10:46,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:10:46,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653005695] [2021-11-06 10:10:46,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:10:46,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:10:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:10:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:10:52,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:10:52,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653005695] [2021-11-06 10:10:52,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653005695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:10:52,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:10:52,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:10:52,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201652839] [2021-11-06 10:10:52,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:10:52,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:10:52,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:10:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:10:52,006 INFO L87 Difference]: Start difference. First operand 1374 states and 1536 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:11:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:11:02,428 INFO L93 Difference]: Finished difference Result 1645 states and 1836 transitions. [2021-11-06 10:11:02,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:11:02,428 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-06 10:11:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:11:02,430 INFO L225 Difference]: With dead ends: 1645 [2021-11-06 10:11:02,430 INFO L226 Difference]: Without dead ends: 1560 [2021-11-06 10:11:02,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:11:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-11-06 10:11:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1479. [2021-11-06 10:11:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1462 states have (on average 1.1361149110807114) internal successors, (1661), 1478 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:11:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1661 transitions. [2021-11-06 10:11:02,510 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1661 transitions. Word has length 113 [2021-11-06 10:11:02,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:11:02,510 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 1661 transitions. [2021-11-06 10:11:02,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:11:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1661 transitions. [2021-11-06 10:11:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 10:11:02,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:11:02,511 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:11:02,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-06 10:11:02,511 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:11:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:11:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1033394390, now seen corresponding path program 1 times [2021-11-06 10:11:02,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:11:02,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083728309] [2021-11-06 10:11:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:11:02,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:11:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:11:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:11:07,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:11:07,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083728309] [2021-11-06 10:11:07,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083728309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:11:07,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:11:07,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:11:07,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533623942] [2021-11-06 10:11:07,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:11:07,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:11:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:11:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:11:07,291 INFO L87 Difference]: Start difference. First operand 1479 states and 1661 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:11:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:11:11,964 INFO L93 Difference]: Finished difference Result 1744 states and 1953 transitions. [2021-11-06 10:11:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:11:11,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-06 10:11:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:11:11,966 INFO L225 Difference]: With dead ends: 1744 [2021-11-06 10:11:11,966 INFO L226 Difference]: Without dead ends: 1685 [2021-11-06 10:11:11,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:11:11,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-11-06 10:11:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1466. [2021-11-06 10:11:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1449 states have (on average 1.1387163561076605) internal successors, (1650), 1465 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:11:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1650 transitions. [2021-11-06 10:11:12,044 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1650 transitions. Word has length 113 [2021-11-06 10:11:12,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:11:12,044 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 1650 transitions. [2021-11-06 10:11:12,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:11:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1650 transitions. [2021-11-06 10:11:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 10:11:12,045 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:11:12,045 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:11:12,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-06 10:11:12,046 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:11:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:11:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash 627319477, now seen corresponding path program 1 times [2021-11-06 10:11:12,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:11:12,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734680068] [2021-11-06 10:11:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:11:12,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:11:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:11:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:11:18,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:11:18,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734680068] [2021-11-06 10:11:18,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734680068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:11:18,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:11:18,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-06 10:11:18,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054573259] [2021-11-06 10:11:18,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-06 10:11:18,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:11:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-06 10:11:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:11:18,722 INFO L87 Difference]: Start difference. First operand 1466 states and 1650 transitions. Second operand has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 27 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:12:09,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:12:09,651 INFO L93 Difference]: Finished difference Result 2833 states and 3145 transitions. [2021-11-06 10:12:09,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-06 10:12:09,652 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 27 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-06 10:12:09,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:12:09,654 INFO L225 Difference]: With dead ends: 2833 [2021-11-06 10:12:09,654 INFO L226 Difference]: Without dead ends: 2713 [2021-11-06 10:12:09,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=1950, Invalid=9822, Unknown=0, NotChecked=0, Total=11772 [2021-11-06 10:12:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2021-11-06 10:12:09,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 1488. [2021-11-06 10:12:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1471 states have (on average 1.1373215499660094) internal successors, (1673), 1487 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:12:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1673 transitions. [2021-11-06 10:12:09,761 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1673 transitions. Word has length 115 [2021-11-06 10:12:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:12:09,761 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 1673 transitions. [2021-11-06 10:12:09,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 27 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:12:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1673 transitions. [2021-11-06 10:12:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 10:12:09,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:12:09,762 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:12:09,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-06 10:12:09,763 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:12:09,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:12:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash 885484915, now seen corresponding path program 1 times [2021-11-06 10:12:09,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:12:09,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822383833] [2021-11-06 10:12:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:12:09,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:12:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:12:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:12:17,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:12:17,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822383833] [2021-11-06 10:12:17,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822383833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:12:17,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:12:17,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-06 10:12:17,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469237602] [2021-11-06 10:12:17,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-06 10:12:17,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:12:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-06 10:12:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-11-06 10:12:17,424 INFO L87 Difference]: Start difference. First operand 1488 states and 1673 transitions. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:12:49,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:12:49,808 INFO L93 Difference]: Finished difference Result 2155 states and 2395 transitions. [2021-11-06 10:12:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-06 10:12:49,809 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-06 10:12:49,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:12:49,811 INFO L225 Difference]: With dead ends: 2155 [2021-11-06 10:12:49,811 INFO L226 Difference]: Without dead ends: 2029 [2021-11-06 10:12:49,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1054, Invalid=3106, Unknown=0, NotChecked=0, Total=4160 [2021-11-06 10:12:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-11-06 10:12:49,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1469. [2021-11-06 10:12:49,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1452 states have (on average 1.1384297520661157) internal successors, (1653), 1468 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:12:49,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1653 transitions. [2021-11-06 10:12:49,907 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1653 transitions. Word has length 115 [2021-11-06 10:12:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:12:49,907 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 1653 transitions. [2021-11-06 10:12:49,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:12:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1653 transitions. [2021-11-06 10:12:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 10:12:49,908 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:12:49,908 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:12:49,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-06 10:12:49,908 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:12:49,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:12:49,908 INFO L85 PathProgramCache]: Analyzing trace with hash -805690705, now seen corresponding path program 1 times [2021-11-06 10:12:49,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:12:49,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485483627] [2021-11-06 10:12:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:12:49,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:12:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:13:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:13:01,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:13:01,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485483627] [2021-11-06 10:13:01,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485483627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:13:01,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:13:01,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-06 10:13:01,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518449456] [2021-11-06 10:13:01,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 10:13:01,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:13:01,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 10:13:01,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:13:01,243 INFO L87 Difference]: Start difference. First operand 1469 states and 1653 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:13:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:13:44,580 INFO L93 Difference]: Finished difference Result 2228 states and 2463 transitions. [2021-11-06 10:13:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-06 10:13:44,581 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-06 10:13:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:13:44,583 INFO L225 Difference]: With dead ends: 2228 [2021-11-06 10:13:44,583 INFO L226 Difference]: Without dead ends: 2126 [2021-11-06 10:13:44,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=911, Invalid=3379, Unknown=0, NotChecked=0, Total=4290 [2021-11-06 10:13:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-11-06 10:13:44,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1496. [2021-11-06 10:13:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1479 states have (on average 1.1359026369168357) internal successors, (1680), 1495 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:13:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1680 transitions. [2021-11-06 10:13:44,706 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1680 transitions. Word has length 115 [2021-11-06 10:13:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:13:44,707 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 1680 transitions. [2021-11-06 10:13:44,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:13:44,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1680 transitions. [2021-11-06 10:13:44,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 10:13:44,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:13:44,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:13:44,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-06 10:13:44,708 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:13:44,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:13:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1301722129, now seen corresponding path program 1 times [2021-11-06 10:13:44,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:13:44,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701344762] [2021-11-06 10:13:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:13:44,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:13:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:13:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:13:59,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:13:59,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701344762] [2021-11-06 10:13:59,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701344762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:13:59,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:13:59,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-06 10:13:59,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112881350] [2021-11-06 10:13:59,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-06 10:13:59,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:13:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-06 10:13:59,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2021-11-06 10:13:59,476 INFO L87 Difference]: Start difference. First operand 1496 states and 1680 transitions. Second operand has 29 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 28 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:01,291 INFO L93 Difference]: Finished difference Result 2173 states and 2408 transitions. [2021-11-06 10:15:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-06 10:15:01,292 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 28 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-06 10:15:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:01,294 INFO L225 Difference]: With dead ends: 2173 [2021-11-06 10:15:01,294 INFO L226 Difference]: Without dead ends: 2071 [2021-11-06 10:15:01,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=1342, Invalid=5968, Unknown=0, NotChecked=0, Total=7310 [2021-11-06 10:15:01,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-11-06 10:15:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1476. [2021-11-06 10:15:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1459 states have (on average 1.13776559287183) internal successors, (1660), 1475 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1660 transitions. [2021-11-06 10:15:01,398 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1660 transitions. Word has length 115 [2021-11-06 10:15:01,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:01,398 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1660 transitions. [2021-11-06 10:15:01,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 28 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:01,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1660 transitions. [2021-11-06 10:15:01,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 10:15:01,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:01,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:01,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-06 10:15:01,400 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:15:01,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash -860730846, now seen corresponding path program 1 times [2021-11-06 10:15:01,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:01,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725650293] [2021-11-06 10:15:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:01,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:04,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:04,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725650293] [2021-11-06 10:15:04,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725650293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:04,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:04,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:15:04,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73524095] [2021-11-06 10:15:04,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:15:04,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:15:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:15:04,019 INFO L87 Difference]: Start difference. First operand 1476 states and 1660 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:11,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:11,469 INFO L93 Difference]: Finished difference Result 1690 states and 1872 transitions. [2021-11-06 10:15:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:15:11,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-06 10:15:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:11,471 INFO L225 Difference]: With dead ends: 1690 [2021-11-06 10:15:11,471 INFO L226 Difference]: Without dead ends: 1672 [2021-11-06 10:15:11,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:15:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2021-11-06 10:15:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1478. [2021-11-06 10:15:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1461 states have (on average 1.1375770020533882) internal successors, (1662), 1477 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1662 transitions. [2021-11-06 10:15:11,574 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1662 transitions. Word has length 116 [2021-11-06 10:15:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:11,574 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 1662 transitions. [2021-11-06 10:15:11,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1662 transitions. [2021-11-06 10:15:11,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 10:15:11,575 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:11,575 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:11,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-06 10:15:11,575 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:15:11,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:11,576 INFO L85 PathProgramCache]: Analyzing trace with hash -180672476, now seen corresponding path program 1 times [2021-11-06 10:15:11,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:11,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493625603] [2021-11-06 10:15:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:11,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:11,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:11,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493625603] [2021-11-06 10:15:11,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493625603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:11,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:11,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:15:11,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499453171] [2021-11-06 10:15:11,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:15:11,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:15:11,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:11,973 INFO L87 Difference]: Start difference. First operand 1478 states and 1662 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:15,045 INFO L93 Difference]: Finished difference Result 2713 states and 3066 transitions. [2021-11-06 10:15:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:15:15,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-06 10:15:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:15,047 INFO L225 Difference]: With dead ends: 2713 [2021-11-06 10:15:15,047 INFO L226 Difference]: Without dead ends: 1476 [2021-11-06 10:15:15,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:15:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-06 10:15:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1476. [2021-11-06 10:15:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1459 states have (on average 1.1178889650445512) internal successors, (1631), 1475 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1631 transitions. [2021-11-06 10:15:15,149 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1631 transitions. Word has length 116 [2021-11-06 10:15:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:15,149 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1631 transitions. [2021-11-06 10:15:15,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1631 transitions. [2021-11-06 10:15:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-06 10:15:15,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:15,151 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:15,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-06 10:15:15,151 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:15:15,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:15,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1144641124, now seen corresponding path program 1 times [2021-11-06 10:15:15,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:15,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689174741] [2021-11-06 10:15:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:15,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:19,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:19,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689174741] [2021-11-06 10:15:19,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689174741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:19,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:19,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:15:19,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547369988] [2021-11-06 10:15:19,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:15:19,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:15:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:15:19,617 INFO L87 Difference]: Start difference. First operand 1476 states and 1631 transitions. Second operand has 15 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:37,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:37,129 INFO L93 Difference]: Finished difference Result 1752 states and 1909 transitions. [2021-11-06 10:15:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 10:15:37,130 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-06 10:15:37,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:37,131 INFO L225 Difference]: With dead ends: 1752 [2021-11-06 10:15:37,131 INFO L226 Difference]: Without dead ends: 1637 [2021-11-06 10:15:37,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 10:15:37,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-11-06 10:15:37,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1476. [2021-11-06 10:15:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1459 states have (on average 1.113776559287183) internal successors, (1625), 1475 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1625 transitions. [2021-11-06 10:15:37,230 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1625 transitions. Word has length 117 [2021-11-06 10:15:37,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:37,230 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1625 transitions. [2021-11-06 10:15:37,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:37,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1625 transitions. [2021-11-06 10:15:37,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-06 10:15:37,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:37,231 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:37,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-06 10:15:37,232 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:15:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash -866885464, now seen corresponding path program 1 times [2021-11-06 10:15:37,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:37,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789752804] [2021-11-06 10:15:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:37,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:41,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:41,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789752804] [2021-11-06 10:15:41,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789752804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:41,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:41,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 10:15:41,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724850437] [2021-11-06 10:15:41,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 10:15:41,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:41,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 10:15:41,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:15:41,997 INFO L87 Difference]: Start difference. First operand 1476 states and 1625 transitions. Second operand has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:07,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:07,629 INFO L93 Difference]: Finished difference Result 1980 states and 2168 transitions. [2021-11-06 10:16:07,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-06 10:16:07,630 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-06 10:16:07,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:07,632 INFO L225 Difference]: With dead ends: 1980 [2021-11-06 10:16:07,632 INFO L226 Difference]: Without dead ends: 1978 [2021-11-06 10:16:07,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=820, Invalid=4150, Unknown=0, NotChecked=0, Total=4970 [2021-11-06 10:16:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-11-06 10:16:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1477. [2021-11-06 10:16:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1460 states have (on average 1.1143835616438356) internal successors, (1627), 1476 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1627 transitions. [2021-11-06 10:16:07,736 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1627 transitions. Word has length 117 [2021-11-06 10:16:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:07,736 INFO L470 AbstractCegarLoop]: Abstraction has 1477 states and 1627 transitions. [2021-11-06 10:16:07,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1627 transitions. [2021-11-06 10:16:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 10:16:07,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:07,737 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:07,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-06 10:16:07,737 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:16:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2074120667, now seen corresponding path program 1 times [2021-11-06 10:16:07,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:07,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679404678] [2021-11-06 10:16:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:07,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:16:08,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:08,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679404678] [2021-11-06 10:16:08,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679404678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:08,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:08,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:16:08,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715451868] [2021-11-06 10:16:08,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:16:08,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:08,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:16:08,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:16:08,371 INFO L87 Difference]: Start difference. First operand 1477 states and 1627 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 11 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:18,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:18,046 INFO L93 Difference]: Finished difference Result 1838 states and 2026 transitions. [2021-11-06 10:16:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:16:18,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 11 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-06 10:16:18,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:18,048 INFO L225 Difference]: With dead ends: 1838 [2021-11-06 10:16:18,048 INFO L226 Difference]: Without dead ends: 1828 [2021-11-06 10:16:18,049 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:16:18,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-11-06 10:16:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1492. [2021-11-06 10:16:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1476 states have (on average 1.10840108401084) internal successors, (1636), 1491 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1636 transitions. [2021-11-06 10:16:18,150 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1636 transitions. Word has length 118 [2021-11-06 10:16:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:18,150 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 1636 transitions. [2021-11-06 10:16:18,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 11 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1636 transitions. [2021-11-06 10:16:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-06 10:16:18,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:18,151 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:18,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-06 10:16:18,152 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:16:18,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1822109014, now seen corresponding path program 1 times [2021-11-06 10:16:18,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:18,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321144564] [2021-11-06 10:16:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:18,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:16:18,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:18,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321144564] [2021-11-06 10:16:18,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321144564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:18,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:18,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:16:18,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491014816] [2021-11-06 10:16:18,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:16:18,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:16:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:16:18,335 INFO L87 Difference]: Start difference. First operand 1492 states and 1636 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:18,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:18,685 INFO L93 Difference]: Finished difference Result 4150 states and 4618 transitions. [2021-11-06 10:16:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:16:18,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-06 10:16:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:18,688 INFO L225 Difference]: With dead ends: 4150 [2021-11-06 10:16:18,688 INFO L226 Difference]: Without dead ends: 3248 [2021-11-06 10:16:18,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:16:18,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2021-11-06 10:16:18,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 1510. [2021-11-06 10:16:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1494 states have (on average 1.107095046854083) internal successors, (1654), 1509 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 1654 transitions. [2021-11-06 10:16:18,799 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 1654 transitions. Word has length 123 [2021-11-06 10:16:18,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:18,799 INFO L470 AbstractCegarLoop]: Abstraction has 1510 states and 1654 transitions. [2021-11-06 10:16:18,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:18,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 1654 transitions. [2021-11-06 10:16:18,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 10:16:18,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:18,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:18,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-06 10:16:18,801 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 10:16:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:18,801 INFO L85 PathProgramCache]: Analyzing trace with hash 970162450, now seen corresponding path program 1 times [2021-11-06 10:16:18,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:18,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231439407] [2021-11-06 10:16:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:18,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:16:19,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:19,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231439407] [2021-11-06 10:16:19,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231439407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:19,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:19,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:16:19,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788143730] [2021-11-06 10:16:19,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:16:19,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:16:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:16:19,565 INFO L87 Difference]: Start difference. First operand 1510 states and 1654 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15