./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_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 e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:51:55,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:51:55,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:51:55,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:51:55,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:51:55,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:51:55,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:51:55,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:51:55,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:51:55,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:51:55,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:51:55,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:51:55,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:51:55,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:51:55,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:51:55,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:51:55,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:51:55,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:51:55,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:51:55,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:51:55,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:51:55,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:51:55,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:51:55,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:51:56,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:51:56,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:51:56,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:51:56,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:51:56,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:51:56,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:51:56,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:51:56,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:51:56,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:51:56,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:51:56,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:51:56,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:51:56,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:51:56,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:51:56,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:51:56,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:51:56,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:51:56,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:51:56,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:51:56,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:51:56,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:51:56,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:51:56,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:51:56,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:51:56,034 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:51:56,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:51:56,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:51:56,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:51:56,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:51:56,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:51:56,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:51:56,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:51:56,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:51:56,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:51:56,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:51:56,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:51:56,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:51:56,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:51:56,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:51:56,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:51:56,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:51:56,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:51:56,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:51:56,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:51:56,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:51:56,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:51:56,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:51:56,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb [2021-11-02 12:51:56,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:51:56,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:51:56,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:51:56,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:51:56,224 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:51:56,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2021-11-02 12:51:56,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936c29038/68df7e23375543e8aa4ddf48a35c71a4/FLAG8912ec34b [2021-11-02 12:51:56,851 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:51:56,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2021-11-02 12:51:56,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936c29038/68df7e23375543e8aa4ddf48a35c71a4/FLAG8912ec34b [2021-11-02 12:51:57,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936c29038/68df7e23375543e8aa4ddf48a35c71a4 [2021-11-02 12:51:57,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:51:57,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:51:57,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:51:57,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:51:57,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:51:57,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:51:57" (1/1) ... [2021-11-02 12:51:57,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:57, skipping insertion in model container [2021-11-02 12:51:57,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:51:57" (1/1) ... [2021-11-02 12:51:57,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:51:57,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:51:57,595 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_write_be64_harness.i[4497,4510] [2021-11-02 12:51:57,600 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_write_be64_harness.i[4557,4570] [2021-11-02 12:51:57,616 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:51:57,621 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:51:58,128 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,129 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,130 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,131 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,131 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,149 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,158 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:51:58,374 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:51:58,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:51:58,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:51:58,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:51:58,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:51:58,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:51:58,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:51:58,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:51:58,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:51:58,460 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:51:58,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:51:58,607 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:51:58,625 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_write_be64_harness.i[4497,4510] [2021-11-02 12:51:58,625 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_write_be64_harness.i[4557,4570] [2021-11-02 12:51:58,626 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:51:58,626 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:51:58,720 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,724 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:51:58,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:51:58,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:51:58,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:51:58,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:51:58,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:51:58,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:51:58,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:51:58,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:51:58,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:51:58,769 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:51:58,820 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:58,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:51:59,036 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:51:59,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59 WrapperNode [2021-11-02 12:51:59,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:51:59,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:51:59,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:51:59,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:51:59,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:51:59,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:51:59,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:51:59,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:51:59,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:51:59,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:51:59,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:51:59,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:51:59,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (1/1) ... [2021-11-02 12:51:59,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:51:59,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:51:59,336 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) [2021-11-02 12:51:59,364 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 [2021-11-02 12:51:59,374 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-02 12:51:59,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:51:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:51:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:51:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:51:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:51:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:51:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:51:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:51:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:51:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:51:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:52:03,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:52:03,542 INFO L299 CfgBuilder]: Removed 91 assume(true) statements. [2021-11-02 12:52:03,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:52:03 BoogieIcfgContainer [2021-11-02 12:52:03,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:52:03,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:52:03,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:52:03,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:52:03,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:51:57" (1/3) ... [2021-11-02 12:52:03,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313f5b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:52:03, skipping insertion in model container [2021-11-02 12:52:03,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:59" (2/3) ... [2021-11-02 12:52:03,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313f5b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:52:03, skipping insertion in model container [2021-11-02 12:52:03,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:52:03" (3/3) ... [2021-11-02 12:52:03,553 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be64_harness.i [2021-11-02 12:52:03,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:52:03,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 12:52:03,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:52:03,601 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 [2021-11-02 12:52:03,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 12:52:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 176 states have (on average 1.4829545454545454) internal successors, (261), 187 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 12:52:03,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:03,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:03,627 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:03,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:03,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2035654772, now seen corresponding path program 1 times [2021-11-02 12:52:03,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:03,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090790893] [2021-11-02 12:52:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:03,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:04,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:04,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090790893] [2021-11-02 12:52:04,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090790893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:04,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:04,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:52:04,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029559625] [2021-11-02 12:52:04,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:52:04,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:04,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:52:04,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:52:04,164 INFO L87 Difference]: Start difference. First operand has 188 states, 176 states have (on average 1.4829545454545454) internal successors, (261), 187 states have internal predecessors, (261), 0 states have call successors, (0), 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 20.5) internal successors, (41), 2 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) [2021-11-02 12:52:06,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:07,341 INFO L93 Difference]: Finished difference Result 372 states and 517 transitions. [2021-11-02 12:52:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:52:07,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 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 [2021-11-02 12:52:07,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:07,354 INFO L225 Difference]: With dead ends: 372 [2021-11-02 12:52:07,355 INFO L226 Difference]: Without dead ends: 183 [2021-11-02 12:52:07,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:52:07,359 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2828.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3113.00ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:07,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 239 Unknown, 0 Unchecked, 3.79ms Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 1 Unknown, 0 Unchecked, 3113.00ms Time] [2021-11-02 12:52:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-02 12:52:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-02 12:52:07,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 172 states have (on average 1.3604651162790697) internal successors, (234), 182 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2021-11-02 12:52:07,395 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 41 [2021-11-02 12:52:07,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:07,395 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2021-11-02 12:52:07,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 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) [2021-11-02 12:52:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2021-11-02 12:52:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 12:52:07,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:07,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:07,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:52:07,397 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:07,398 INFO L85 PathProgramCache]: Analyzing trace with hash 911785488, now seen corresponding path program 1 times [2021-11-02 12:52:07,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:07,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726996403] [2021-11-02 12:52:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:07,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:07,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:07,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726996403] [2021-11-02 12:52:07,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726996403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:07,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:07,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:52:07,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140092804] [2021-11-02 12:52:07,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:52:07,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:07,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:52:07,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:52:07,611 INFO L87 Difference]: Start difference. First operand 183 states and 234 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) [2021-11-02 12:52:09,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:10,913 INFO L93 Difference]: Finished difference Result 340 states and 434 transitions. [2021-11-02 12:52:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:52:10,913 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 [2021-11-02 12:52:10,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:10,916 INFO L225 Difference]: With dead ends: 340 [2021-11-02 12:52:10,916 INFO L226 Difference]: Without dead ends: 183 [2021-11-02 12:52:10,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:52:10,917 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 325 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2991.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.19ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3232.39ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:10,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 0 Invalid, 357 Unknown, 0 Unchecked, 8.19ms Time], IncrementalHoareTripleChecker [7 Valid, 349 Invalid, 1 Unknown, 0 Unchecked, 3232.39ms Time] [2021-11-02 12:52:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-02 12:52:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-02 12:52:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 172 states have (on average 1.3430232558139534) internal successors, (231), 182 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 231 transitions. [2021-11-02 12:52:10,925 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 231 transitions. Word has length 41 [2021-11-02 12:52:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:10,926 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 231 transitions. [2021-11-02 12:52:10,926 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) [2021-11-02 12:52:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 231 transitions. [2021-11-02 12:52:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 12:52:10,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:10,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:10,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:52:10,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:10,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1949548946, now seen corresponding path program 1 times [2021-11-02 12:52:10,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:10,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800308862] [2021-11-02 12:52:10,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:10,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:11,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:11,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800308862] [2021-11-02 12:52:11,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800308862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:11,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:11,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:52:11,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548820864] [2021-11-02 12:52:11,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:52:11,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:52:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:52:11,161 INFO L87 Difference]: Start difference. First operand 183 states and 231 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) [2021-11-02 12:52:13,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:15,223 INFO L93 Difference]: Finished difference Result 401 states and 514 transitions. [2021-11-02 12:52:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:52:15,224 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 [2021-11-02 12:52:15,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:15,225 INFO L225 Difference]: With dead ends: 401 [2021-11-02 12:52:15,225 INFO L226 Difference]: Without dead ends: 243 [2021-11-02 12:52:15,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:52:15,226 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3767.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.24ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3988.91ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:15,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 742 Unknown, 0 Unchecked, 9.24ms Time], IncrementalHoareTripleChecker [21 Valid, 720 Invalid, 1 Unknown, 0 Unchecked, 3988.91ms Time] [2021-11-02 12:52:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-02 12:52:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 195. [2021-11-02 12:52:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 184 states have (on average 1.3206521739130435) internal successors, (243), 194 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 243 transitions. [2021-11-02 12:52:15,237 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 243 transitions. Word has length 53 [2021-11-02 12:52:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:15,237 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 243 transitions. [2021-11-02 12:52:15,237 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) [2021-11-02 12:52:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 243 transitions. [2021-11-02 12:52:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 12:52:15,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:15,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:15,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:52:15,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash -920189648, now seen corresponding path program 1 times [2021-11-02 12:52:15,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:15,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415652972] [2021-11-02 12:52:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:15,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:15,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:15,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415652972] [2021-11-02 12:52:15,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415652972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:15,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:15,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:52:15,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986908877] [2021-11-02 12:52:15,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:52:15,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:52:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:52:15,498 INFO L87 Difference]: Start difference. First operand 195 states and 243 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:17,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:18,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:18,808 INFO L93 Difference]: Finished difference Result 316 states and 390 transitions. [2021-11-02 12:52:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:52:18,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-02 12:52:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:18,810 INFO L225 Difference]: With dead ends: 316 [2021-11-02 12:52:18,810 INFO L226 Difference]: Without dead ends: 195 [2021-11-02 12:52:18,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 107.08ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:52:18,811 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 486 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2964.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.95ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3208.75ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:18,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 0 Invalid, 393 Unknown, 0 Unchecked, 5.95ms Time], IncrementalHoareTripleChecker [5 Valid, 387 Invalid, 1 Unknown, 0 Unchecked, 3208.75ms Time] [2021-11-02 12:52:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-02 12:52:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-02 12:52:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 184 states have (on average 1.315217391304348) internal successors, (242), 194 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 242 transitions. [2021-11-02 12:52:18,821 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 242 transitions. Word has length 53 [2021-11-02 12:52:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:18,822 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 242 transitions. [2021-11-02 12:52:18,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 242 transitions. [2021-11-02 12:52:18,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 12:52:18,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:18,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:18,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 12:52:18,823 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1542097477, now seen corresponding path program 1 times [2021-11-02 12:52:18,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:18,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624692775] [2021-11-02 12:52:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:18,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:19,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:19,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624692775] [2021-11-02 12:52:19,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624692775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:19,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:19,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:52:19,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279921303] [2021-11-02 12:52:19,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:52:19,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:19,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:52:19,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:52:19,105 INFO L87 Difference]: Start difference. First operand 195 states and 242 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:21,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:22,751 INFO L93 Difference]: Finished difference Result 267 states and 323 transitions. [2021-11-02 12:52:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:52:22,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-02 12:52:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:22,753 INFO L225 Difference]: With dead ends: 267 [2021-11-02 12:52:22,753 INFO L226 Difference]: Without dead ends: 195 [2021-11-02 12:52:22,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 197.07ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:52:22,754 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 628 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3274.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.85ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3473.52ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:22,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 0 Invalid, 456 Unknown, 0 Unchecked, 8.85ms Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 3473.52ms Time] [2021-11-02 12:52:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-02 12:52:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-02 12:52:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 184 states have (on average 1.3043478260869565) internal successors, (240), 194 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 240 transitions. [2021-11-02 12:52:22,766 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 240 transitions. Word has length 59 [2021-11-02 12:52:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:22,767 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 240 transitions. [2021-11-02 12:52:22,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 240 transitions. [2021-11-02 12:52:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 12:52:22,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:22,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:22,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 12:52:22,773 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1146198862, now seen corresponding path program 1 times [2021-11-02 12:52:22,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:22,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573989862] [2021-11-02 12:52:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:22,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:23,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:23,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573989862] [2021-11-02 12:52:23,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573989862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:23,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:23,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:52:23,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911225114] [2021-11-02 12:52:23,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:52:23,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:23,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:52:23,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:52:23,031 INFO L87 Difference]: Start difference. First operand 195 states and 240 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:25,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:27,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:27,733 INFO L93 Difference]: Finished difference Result 491 states and 620 transitions. [2021-11-02 12:52:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:52:27,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 12:52:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:27,736 INFO L225 Difference]: With dead ends: 491 [2021-11-02 12:52:27,737 INFO L226 Difference]: Without dead ends: 315 [2021-11-02 12:52:27,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:52:27,738 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 169 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4308.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.33ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4623.38ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:27,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 0 Invalid, 905 Unknown, 0 Unchecked, 9.33ms Time], IncrementalHoareTripleChecker [21 Valid, 883 Invalid, 1 Unknown, 0 Unchecked, 4623.38ms Time] [2021-11-02 12:52:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-02 12:52:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 207. [2021-11-02 12:52:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 196 states have (on average 1.2857142857142858) internal successors, (252), 206 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 252 transitions. [2021-11-02 12:52:27,743 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 252 transitions. Word has length 65 [2021-11-02 12:52:27,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:27,744 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 252 transitions. [2021-11-02 12:52:27,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:27,744 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 252 transitions. [2021-11-02 12:52:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 12:52:27,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:27,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:27,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 12:52:27,745 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:27,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1539225872, now seen corresponding path program 1 times [2021-11-02 12:52:27,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:27,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840263323] [2021-11-02 12:52:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:27,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:28,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:28,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840263323] [2021-11-02 12:52:28,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840263323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:28,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:28,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:52:28,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992718886] [2021-11-02 12:52:28,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:52:28,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:28,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:52:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:52:28,251 INFO L87 Difference]: Start difference. First operand 207 states and 252 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:30,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:33,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:33,318 INFO L93 Difference]: Finished difference Result 328 states and 387 transitions. [2021-11-02 12:52:33,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:52:33,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 12:52:33,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:33,320 INFO L225 Difference]: With dead ends: 328 [2021-11-02 12:52:33,320 INFO L226 Difference]: Without dead ends: 315 [2021-11-02 12:52:33,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 231.77ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:52:33,321 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 231 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4556.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.44ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4887.41ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:33,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 0 Invalid, 1063 Unknown, 0 Unchecked, 8.44ms Time], IncrementalHoareTripleChecker [40 Valid, 1022 Invalid, 1 Unknown, 0 Unchecked, 4887.41ms Time] [2021-11-02 12:52:33,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-02 12:52:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 213. [2021-11-02 12:52:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 202 states have (on average 1.2722772277227723) internal successors, (257), 212 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 257 transitions. [2021-11-02 12:52:33,326 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 257 transitions. Word has length 65 [2021-11-02 12:52:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:33,326 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 257 transitions. [2021-11-02 12:52:33,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 257 transitions. [2021-11-02 12:52:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 12:52:33,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:33,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:33,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 12:52:33,328 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:33,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1637368772, now seen corresponding path program 1 times [2021-11-02 12:52:33,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:33,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515023454] [2021-11-02 12:52:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:33,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:34,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:34,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515023454] [2021-11-02 12:52:34,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515023454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:34,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:34,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:52:34,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966176731] [2021-11-02 12:52:34,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:52:34,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:52:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:52:34,013 INFO L87 Difference]: Start difference. First operand 213 states and 257 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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) [2021-11-02 12:52:36,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:47,546 INFO L93 Difference]: Finished difference Result 738 states and 894 transitions. [2021-11-02 12:52:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-02 12:52:47,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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 [2021-11-02 12:52:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:47,548 INFO L225 Difference]: With dead ends: 738 [2021-11-02 12:52:47,548 INFO L226 Difference]: Without dead ends: 603 [2021-11-02 12:52:47,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 3079.27ms TimeCoverageRelationStatistics Valid=370, Invalid=1190, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 12:52:47,550 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1196 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 3119 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10081.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.02ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3119 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10653.00ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:47,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 0 Invalid, 3209 Unknown, 0 Unchecked, 26.02ms Time], IncrementalHoareTripleChecker [89 Valid, 3119 Invalid, 1 Unknown, 0 Unchecked, 10653.00ms Time] [2021-11-02 12:52:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-02 12:52:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 244. [2021-11-02 12:52:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 233 states have (on average 1.2746781115879828) internal successors, (297), 243 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 297 transitions. [2021-11-02 12:52:47,556 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 297 transitions. Word has length 69 [2021-11-02 12:52:47,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:47,557 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 297 transitions. [2021-11-02 12:52:47,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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) [2021-11-02 12:52:47,557 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 297 transitions. [2021-11-02 12:52:47,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 12:52:47,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:47,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:47,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 12:52:47,558 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:47,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1977540154, now seen corresponding path program 1 times [2021-11-02 12:52:47,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:47,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734567810] [2021-11-02 12:52:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:47,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:48,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:48,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734567810] [2021-11-02 12:52:48,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734567810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:48,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:48,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:52:48,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323962018] [2021-11-02 12:52:48,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:52:48,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:48,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:52:48,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:52:48,147 INFO L87 Difference]: Start difference. First operand 244 states and 297 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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) [2021-11-02 12:52:50,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:53,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:53,688 INFO L93 Difference]: Finished difference Result 489 states and 584 transitions. [2021-11-02 12:52:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:52:53,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 [2021-11-02 12:52:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:53,689 INFO L225 Difference]: With dead ends: 489 [2021-11-02 12:52:53,689 INFO L226 Difference]: Without dead ends: 358 [2021-11-02 12:52:53,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 730.28ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:52:53,690 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 711 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4636.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.66ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4940.69ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:53,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 0 Invalid, 1247 Unknown, 0 Unchecked, 11.66ms Time], IncrementalHoareTripleChecker [33 Valid, 1213 Invalid, 1 Unknown, 0 Unchecked, 4940.69ms Time] [2021-11-02 12:52:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-02 12:52:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 244. [2021-11-02 12:52:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 233 states have (on average 1.2703862660944205) internal successors, (296), 243 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 296 transitions. [2021-11-02 12:52:53,696 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 296 transitions. Word has length 69 [2021-11-02 12:52:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:53,696 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 296 transitions. [2021-11-02 12:52:53,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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) [2021-11-02 12:52:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 296 transitions. [2021-11-02 12:52:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 12:52:53,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:53,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:53,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 12:52:53,698 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash 729079240, now seen corresponding path program 1 times [2021-11-02 12:52:53,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:53,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546348647] [2021-11-02 12:52:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:53,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:55,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:55,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546348647] [2021-11-02 12:52:55,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546348647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:55,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:55,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:52:55,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762195929] [2021-11-02 12:52:55,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:52:55,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:55,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:52:55,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:52:55,528 INFO L87 Difference]: Start difference. First operand 244 states and 296 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2021-11-02 12:52:57,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:59,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:59,447 INFO L93 Difference]: Finished difference Result 426 states and 515 transitions. [2021-11-02 12:52:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:52:59,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 [2021-11-02 12:52:59,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:59,451 INFO L225 Difference]: With dead ends: 426 [2021-11-02 12:52:59,451 INFO L226 Difference]: Without dead ends: 244 [2021-11-02 12:52:59,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:52:59,452 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 159 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3554.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.02ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3841.71ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:59,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 0 Invalid, 515 Unknown, 0 Unchecked, 3.02ms Time], IncrementalHoareTripleChecker [1 Valid, 513 Invalid, 1 Unknown, 0 Unchecked, 3841.71ms Time] [2021-11-02 12:52:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-02 12:52:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-02 12:52:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 233 states have (on average 1.2660944206008584) internal successors, (295), 243 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 295 transitions. [2021-11-02 12:52:59,462 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 295 transitions. Word has length 69 [2021-11-02 12:52:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:59,463 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 295 transitions. [2021-11-02 12:52:59,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2021-11-02 12:52:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 295 transitions. [2021-11-02 12:52:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 12:52:59,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:59,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:59,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 12:52:59,464 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:59,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1003838854, now seen corresponding path program 1 times [2021-11-02 12:52:59,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:59,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470576938] [2021-11-02 12:52:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:59,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:02,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:02,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470576938] [2021-11-02 12:53:02,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470576938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:02,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:02,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:53:02,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564898909] [2021-11-02 12:53:02,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:53:02,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:53:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:53:02,159 INFO L87 Difference]: Start difference. First operand 244 states and 295 transitions. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 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) [2021-11-02 12:53:04,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:12,096 INFO L93 Difference]: Finished difference Result 670 states and 811 transitions. [2021-11-02 12:53:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:53:12,096 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 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 [2021-11-02 12:53:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:12,098 INFO L225 Difference]: With dead ends: 670 [2021-11-02 12:53:12,099 INFO L226 Difference]: Without dead ends: 471 [2021-11-02 12:53:12,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1608.26ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:53:12,100 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 991 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8409.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.54ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8896.52ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:12,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 0 Invalid, 2316 Unknown, 0 Unchecked, 21.54ms Time], IncrementalHoareTripleChecker [83 Valid, 2232 Invalid, 1 Unknown, 0 Unchecked, 8896.52ms Time] [2021-11-02 12:53:12,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-02 12:53:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 337. [2021-11-02 12:53:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 326 states have (on average 1.2546012269938651) internal successors, (409), 336 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 409 transitions. [2021-11-02 12:53:12,113 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 409 transitions. Word has length 69 [2021-11-02 12:53:12,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:12,114 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 409 transitions. [2021-11-02 12:53:12,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 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) [2021-11-02 12:53:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 409 transitions. [2021-11-02 12:53:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 12:53:12,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:12,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:12,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 12:53:12,115 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:12,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1756790666, now seen corresponding path program 1 times [2021-11-02 12:53:12,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:12,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009433994] [2021-11-02 12:53:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:12,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:14,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:14,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009433994] [2021-11-02 12:53:14,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009433994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:14,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:14,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:53:14,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718941563] [2021-11-02 12:53:14,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:53:14,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:14,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:53:14,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:53:14,184 INFO L87 Difference]: Start difference. First operand 337 states and 409 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) [2021-11-02 12:53:16,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:20,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:20,071 INFO L93 Difference]: Finished difference Result 691 states and 841 transitions. [2021-11-02 12:53:20,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:53:20,071 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 [2021-11-02 12:53:20,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:20,072 INFO L225 Difference]: With dead ends: 691 [2021-11-02 12:53:20,072 INFO L226 Difference]: Without dead ends: 397 [2021-11-02 12:53:20,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 613.97ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:53:20,073 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 733 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5190.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.88ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5460.12ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:20,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 0 Invalid, 1221 Unknown, 0 Unchecked, 11.88ms Time], IncrementalHoareTripleChecker [26 Valid, 1194 Invalid, 1 Unknown, 0 Unchecked, 5460.12ms Time] [2021-11-02 12:53:20,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-02 12:53:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 338. [2021-11-02 12:53:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 327 states have (on average 1.253822629969419) internal successors, (410), 337 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 410 transitions. [2021-11-02 12:53:20,083 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 410 transitions. Word has length 69 [2021-11-02 12:53:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:20,084 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 410 transitions. [2021-11-02 12:53:20,084 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) [2021-11-02 12:53:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 410 transitions. [2021-11-02 12:53:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:53:20,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:20,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:20,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 12:53:20,086 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash 836593131, now seen corresponding path program 1 times [2021-11-02 12:53:20,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:20,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185732082] [2021-11-02 12:53:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:20,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:20,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:20,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185732082] [2021-11-02 12:53:20,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185732082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:20,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:20,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:53:20,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758994724] [2021-11-02 12:53:20,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:53:20,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:20,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:53:20,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:53:20,322 INFO L87 Difference]: Start difference. First operand 338 states and 410 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:22,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:25,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:25,210 INFO L93 Difference]: Finished difference Result 808 states and 976 transitions. [2021-11-02 12:53:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:53:25,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-02 12:53:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:25,212 INFO L225 Difference]: With dead ends: 808 [2021-11-02 12:53:25,212 INFO L226 Difference]: Without dead ends: 511 [2021-11-02 12:53:25,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 119.57ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:53:25,213 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 523 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4404.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4754.15ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:25,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 0 Invalid, 774 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [34 Valid, 739 Invalid, 1 Unknown, 0 Unchecked, 4754.15ms Time] [2021-11-02 12:53:25,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-02 12:53:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 341. [2021-11-02 12:53:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 330 states have (on average 1.2272727272727273) internal successors, (405), 340 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 405 transitions. [2021-11-02 12:53:25,222 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 405 transitions. Word has length 76 [2021-11-02 12:53:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:25,222 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 405 transitions. [2021-11-02 12:53:25,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 405 transitions. [2021-11-02 12:53:25,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:53:25,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:25,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:25,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 12:53:25,224 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:25,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1270322217, now seen corresponding path program 1 times [2021-11-02 12:53:25,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:25,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93400040] [2021-11-02 12:53:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:25,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:26,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:26,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93400040] [2021-11-02 12:53:26,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93400040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:26,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:26,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 12:53:26,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265143620] [2021-11-02 12:53:26,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 12:53:26,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 12:53:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:53:26,413 INFO L87 Difference]: Start difference. First operand 341 states and 405 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:28,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:41,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:41,225 INFO L93 Difference]: Finished difference Result 882 states and 1049 transitions. [2021-11-02 12:53:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 12:53:41,225 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-02 12:53:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:41,227 INFO L225 Difference]: With dead ends: 882 [2021-11-02 12:53:41,227 INFO L226 Difference]: Without dead ends: 613 [2021-11-02 12:53:41,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2671.40ms TimeCoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 12:53:41,228 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1054 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 3976 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11913.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.68ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3976 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12599.47ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:41,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 0 Invalid, 4066 Unknown, 0 Unchecked, 31.68ms Time], IncrementalHoareTripleChecker [89 Valid, 3976 Invalid, 1 Unknown, 0 Unchecked, 12599.47ms Time] [2021-11-02 12:53:41,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-02 12:53:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 413. [2021-11-02 12:53:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 402 states have (on average 1.2114427860696517) internal successors, (487), 412 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 487 transitions. [2021-11-02 12:53:41,239 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 487 transitions. Word has length 76 [2021-11-02 12:53:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:41,239 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 487 transitions. [2021-11-02 12:53:41,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 487 transitions. [2021-11-02 12:53:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:53:41,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:41,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:41,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 12:53:41,241 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash -691252441, now seen corresponding path program 1 times [2021-11-02 12:53:41,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:41,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40358369] [2021-11-02 12:53:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:41,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:41,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:41,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40358369] [2021-11-02 12:53:41,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40358369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:41,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:41,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:53:41,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104777579] [2021-11-02 12:53:41,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:53:41,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:53:41,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:53:41,719 INFO L87 Difference]: Start difference. First operand 413 states and 487 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:44,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:50,899 INFO L93 Difference]: Finished difference Result 902 states and 1062 transitions. [2021-11-02 12:53:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:53:50,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-02 12:53:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:50,901 INFO L225 Difference]: With dead ends: 902 [2021-11-02 12:53:50,901 INFO L226 Difference]: Without dead ends: 685 [2021-11-02 12:53:50,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 914.97ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:53:50,902 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 606 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7912.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.38ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8371.93ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:50,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 0 Invalid, 2451 Unknown, 0 Unchecked, 15.38ms Time], IncrementalHoareTripleChecker [38 Valid, 2412 Invalid, 1 Unknown, 0 Unchecked, 8371.93ms Time] [2021-11-02 12:53:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-11-02 12:53:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 413. [2021-11-02 12:53:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 402 states have (on average 1.208955223880597) internal successors, (486), 412 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 486 transitions. [2021-11-02 12:53:50,913 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 486 transitions. Word has length 76 [2021-11-02 12:53:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:50,914 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 486 transitions. [2021-11-02 12:53:50,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 486 transitions. [2021-11-02 12:53:50,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:53:50,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:50,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:50,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 12:53:50,915 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:50,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:50,915 INFO L85 PathProgramCache]: Analyzing trace with hash 419196525, now seen corresponding path program 1 times [2021-11-02 12:53:50,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:50,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118491201] [2021-11-02 12:53:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:50,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:51,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:51,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118491201] [2021-11-02 12:53:51,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118491201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:51,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:51,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:53:51,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52370332] [2021-11-02 12:53:51,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:53:51,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:53:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:53:51,962 INFO L87 Difference]: Start difference. First operand 413 states and 486 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:54,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:05,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:05,071 INFO L93 Difference]: Finished difference Result 797 states and 947 transitions. [2021-11-02 12:54:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 12:54:05,071 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-02 12:54:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:05,073 INFO L225 Difference]: With dead ends: 797 [2021-11-02 12:54:05,073 INFO L226 Difference]: Without dead ends: 595 [2021-11-02 12:54:05,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1680.18ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 12:54:05,074 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 814 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11007.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.11ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11781.25ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:05,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 0 Invalid, 3130 Unknown, 0 Unchecked, 31.11ms Time], IncrementalHoareTripleChecker [52 Valid, 3077 Invalid, 1 Unknown, 0 Unchecked, 11781.25ms Time] [2021-11-02 12:54:05,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-02 12:54:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 403. [2021-11-02 12:54:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 392 states have (on average 1.2066326530612246) internal successors, (473), 402 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 473 transitions. [2021-11-02 12:54:05,086 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 473 transitions. Word has length 76 [2021-11-02 12:54:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:05,087 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 473 transitions. [2021-11-02 12:54:05,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:05,087 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 473 transitions. [2021-11-02 12:54:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 12:54:05,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:05,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:05,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 12:54:05,089 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1572400458, now seen corresponding path program 1 times [2021-11-02 12:54:05,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:05,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537995049] [2021-11-02 12:54:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:05,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:05,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:05,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537995049] [2021-11-02 12:54:05,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537995049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:05,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:05,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:54:05,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713416225] [2021-11-02 12:54:05,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:54:05,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:54:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:54:05,539 INFO L87 Difference]: Start difference. First operand 403 states and 473 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:07,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:12,561 INFO L93 Difference]: Finished difference Result 869 states and 1002 transitions. [2021-11-02 12:54:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:54:12,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 12:54:12,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:12,563 INFO L225 Difference]: With dead ends: 869 [2021-11-02 12:54:12,563 INFO L226 Difference]: Without dead ends: 466 [2021-11-02 12:54:12,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 231.65ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:54:12,564 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 119 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6346.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.80ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6843.99ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:12,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 0 Invalid, 1594 Unknown, 0 Unchecked, 10.80ms Time], IncrementalHoareTripleChecker [36 Valid, 1557 Invalid, 1 Unknown, 0 Unchecked, 6843.99ms Time] [2021-11-02 12:54:12,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-02 12:54:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 403. [2021-11-02 12:54:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 392 states have (on average 1.1785714285714286) internal successors, (462), 402 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:12,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 462 transitions. [2021-11-02 12:54:12,575 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 462 transitions. Word has length 77 [2021-11-02 12:54:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:12,576 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 462 transitions. [2021-11-02 12:54:12,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 462 transitions. [2021-11-02 12:54:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 12:54:12,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:12,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:12,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 12:54:12,577 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1076558548, now seen corresponding path program 1 times [2021-11-02 12:54:12,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:12,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7596944] [2021-11-02 12:54:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:12,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:12,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:12,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7596944] [2021-11-02 12:54:12,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7596944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:12,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:12,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:54:12,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916126769] [2021-11-02 12:54:12,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:54:12,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:12,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:54:12,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:54:12,748 INFO L87 Difference]: Start difference. First operand 403 states and 462 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:15,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:17,717 INFO L93 Difference]: Finished difference Result 686 states and 789 transitions. [2021-11-02 12:54:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:54:17,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 12:54:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:17,718 INFO L225 Difference]: With dead ends: 686 [2021-11-02 12:54:17,718 INFO L226 Difference]: Without dead ends: 279 [2021-11-02 12:54:17,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:54:17,719 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4468.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.04ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4911.97ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:17,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 682 Unknown, 0 Unchecked, 4.04ms Time], IncrementalHoareTripleChecker [18 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 4911.97ms Time] [2021-11-02 12:54:17,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-02 12:54:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 261. [2021-11-02 12:54:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.176) internal successors, (294), 260 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 294 transitions. [2021-11-02 12:54:17,727 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 294 transitions. Word has length 81 [2021-11-02 12:54:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:17,728 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 294 transitions. [2021-11-02 12:54:17,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 294 transitions. [2021-11-02 12:54:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 12:54:17,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:17,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:17,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 12:54:17,729 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:17,729 INFO L85 PathProgramCache]: Analyzing trace with hash 490639720, now seen corresponding path program 1 times [2021-11-02 12:54:17,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:17,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516904355] [2021-11-02 12:54:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:17,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:18,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:18,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516904355] [2021-11-02 12:54:18,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516904355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:18,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:18,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:54:18,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582792940] [2021-11-02 12:54:18,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:54:18,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:54:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:54:18,468 INFO L87 Difference]: Start difference. First operand 261 states and 294 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:21,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:25,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:25,868 INFO L93 Difference]: Finished difference Result 510 states and 573 transitions. [2021-11-02 12:54:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:54:25,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 12:54:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:25,869 INFO L225 Difference]: With dead ends: 510 [2021-11-02 12:54:25,869 INFO L226 Difference]: Without dead ends: 317 [2021-11-02 12:54:25,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 680.16ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:54:25,870 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 461 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6375.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.80ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6946.36ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:25,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 0 Invalid, 1265 Unknown, 0 Unchecked, 12.80ms Time], IncrementalHoareTripleChecker [55 Valid, 1209 Invalid, 1 Unknown, 0 Unchecked, 6946.36ms Time] [2021-11-02 12:54:25,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-02 12:54:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 280. [2021-11-02 12:54:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 269 states have (on average 1.1672862453531598) internal successors, (314), 279 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 314 transitions. [2021-11-02 12:54:25,878 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 314 transitions. Word has length 81 [2021-11-02 12:54:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:25,878 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 314 transitions. [2021-11-02 12:54:25,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 314 transitions. [2021-11-02 12:54:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 12:54:25,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:25,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:25,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 12:54:25,880 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:25,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash 66992998, now seen corresponding path program 1 times [2021-11-02 12:54:25,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:25,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380761018] [2021-11-02 12:54:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:25,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:28,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:28,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380761018] [2021-11-02 12:54:28,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380761018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:28,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:28,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:54:28,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871390013] [2021-11-02 12:54:28,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:54:28,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:28,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:54:28,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:54:28,288 INFO L87 Difference]: Start difference. First operand 280 states and 314 transitions. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:30,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:36,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:36,160 INFO L93 Difference]: Finished difference Result 473 states and 535 transitions. [2021-11-02 12:54:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:54:36,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 12:54:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:36,162 INFO L225 Difference]: With dead ends: 473 [2021-11-02 12:54:36,162 INFO L226 Difference]: Without dead ends: 320 [2021-11-02 12:54:36,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1400.56ms TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:54:36,162 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 684 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6325.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.86ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6865.97ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:36,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 0 Invalid, 1664 Unknown, 0 Unchecked, 12.86ms Time], IncrementalHoareTripleChecker [37 Valid, 1626 Invalid, 1 Unknown, 0 Unchecked, 6865.97ms Time] [2021-11-02 12:54:36,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-02 12:54:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 235. [2021-11-02 12:54:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 224 states have (on average 1.1785714285714286) internal successors, (264), 234 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 264 transitions. [2021-11-02 12:54:36,169 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 264 transitions. Word has length 81 [2021-11-02 12:54:36,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:36,170 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 264 transitions. [2021-11-02 12:54:36,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:36,170 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 264 transitions. [2021-11-02 12:54:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:54:36,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:36,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:36,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 12:54:36,171 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:36,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash -154356109, now seen corresponding path program 1 times [2021-11-02 12:54:36,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:36,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757552742] [2021-11-02 12:54:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:36,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:36,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:36,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757552742] [2021-11-02 12:54:36,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757552742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:36,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:36,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:54:36,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172499520] [2021-11-02 12:54:36,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:54:36,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:54:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:54:36,638 INFO L87 Difference]: Start difference. First operand 235 states and 264 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:38,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:44,625 INFO L93 Difference]: Finished difference Result 487 states and 545 transitions. [2021-11-02 12:54:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:54:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:54:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:44,627 INFO L225 Difference]: With dead ends: 487 [2021-11-02 12:54:44,627 INFO L226 Difference]: Without dead ends: 414 [2021-11-02 12:54:44,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 755.49ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:54:44,627 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 495 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6877.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.87ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7328.54ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:44,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 0 Invalid, 1749 Unknown, 0 Unchecked, 16.87ms Time], IncrementalHoareTripleChecker [31 Valid, 1717 Invalid, 1 Unknown, 0 Unchecked, 7328.54ms Time] [2021-11-02 12:54:44,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-02 12:54:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 255. [2021-11-02 12:54:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 244 states have (on average 1.180327868852459) internal successors, (288), 254 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 288 transitions. [2021-11-02 12:54:44,634 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 288 transitions. Word has length 87 [2021-11-02 12:54:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:44,634 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 288 transitions. [2021-11-02 12:54:44,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 288 transitions. [2021-11-02 12:54:44,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:54:44,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:44,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:44,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 12:54:44,635 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:44,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash 525702261, now seen corresponding path program 1 times [2021-11-02 12:54:44,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:44,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368129886] [2021-11-02 12:54:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:44,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:44,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:44,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368129886] [2021-11-02 12:54:44,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368129886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:44,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:44,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:54:44,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063952562] [2021-11-02 12:54:44,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:54:44,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:54:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:54:44,986 INFO L87 Difference]: Start difference. First operand 255 states and 288 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:47,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:50,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:50,234 INFO L93 Difference]: Finished difference Result 503 states and 569 transitions. [2021-11-02 12:54:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:54:50,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:54:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:50,236 INFO L225 Difference]: With dead ends: 503 [2021-11-02 12:54:50,236 INFO L226 Difference]: Without dead ends: 362 [2021-11-02 12:54:50,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 262.26ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:54:50,237 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 436 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4590.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.96ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5059.63ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:50,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 0 Invalid, 742 Unknown, 0 Unchecked, 6.96ms Time], IncrementalHoareTripleChecker [18 Valid, 723 Invalid, 1 Unknown, 0 Unchecked, 5059.63ms Time] [2021-11-02 12:54:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-02 12:54:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 255. [2021-11-02 12:54:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 244 states have (on average 1.1762295081967213) internal successors, (287), 254 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 287 transitions. [2021-11-02 12:54:50,244 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 287 transitions. Word has length 87 [2021-11-02 12:54:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:50,245 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 287 transitions. [2021-11-02 12:54:50,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 287 transitions. [2021-11-02 12:54:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:54:50,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:50,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:50,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 12:54:50,246 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:50,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1062645641, now seen corresponding path program 1 times [2021-11-02 12:54:50,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:50,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688765822] [2021-11-02 12:54:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:50,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:53,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:53,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688765822] [2021-11-02 12:54:53,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688765822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:53,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:53,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:54:53,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019485569] [2021-11-02 12:54:53,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:54:53,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:54:53,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:54:53,014 INFO L87 Difference]: Start difference. First operand 255 states and 287 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:55,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:57,968 INFO L93 Difference]: Finished difference Result 433 states and 486 transitions. [2021-11-02 12:54:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:54:57,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:54:57,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:57,977 INFO L225 Difference]: With dead ends: 433 [2021-11-02 12:54:57,977 INFO L226 Difference]: Without dead ends: 342 [2021-11-02 12:54:57,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 567.02ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:54:57,983 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1143 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4255.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.75ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4658.52ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:57,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 0 Invalid, 975 Unknown, 0 Unchecked, 8.75ms Time], IncrementalHoareTripleChecker [54 Valid, 920 Invalid, 1 Unknown, 0 Unchecked, 4658.52ms Time] [2021-11-02 12:54:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-02 12:54:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 265. [2021-11-02 12:54:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 254 states have (on average 1.1614173228346456) internal successors, (295), 264 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2021-11-02 12:54:57,990 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 87 [2021-11-02 12:54:57,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:57,990 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2021-11-02 12:54:57,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:57,990 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2021-11-02 12:54:57,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:54:57,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:57,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:57,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 12:54:57,991 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1768871925, now seen corresponding path program 1 times [2021-11-02 12:54:57,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:57,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167660131] [2021-11-02 12:54:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:57,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:58,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:58,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167660131] [2021-11-02 12:54:58,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167660131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:58,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:58,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:54:58,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856831426] [2021-11-02 12:54:58,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:54:58,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:54:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:54:58,648 INFO L87 Difference]: Start difference. First operand 265 states and 295 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:01,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:07,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:07,724 INFO L93 Difference]: Finished difference Result 523 states and 580 transitions. [2021-11-02 12:55:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:55:07,725 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:55:07,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:07,725 INFO L225 Difference]: With dead ends: 523 [2021-11-02 12:55:07,726 INFO L226 Difference]: Without dead ends: 362 [2021-11-02 12:55:07,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1195.01ms TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:55:07,726 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 493 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7450.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.94ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8092.89ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:07,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 0 Invalid, 1785 Unknown, 0 Unchecked, 16.94ms Time], IncrementalHoareTripleChecker [50 Valid, 1734 Invalid, 1 Unknown, 0 Unchecked, 8092.89ms Time] [2021-11-02 12:55:07,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-02 12:55:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 285. [2021-11-02 12:55:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 274 states have (on average 1.1496350364963503) internal successors, (315), 284 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 315 transitions. [2021-11-02 12:55:07,735 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 315 transitions. Word has length 87 [2021-11-02 12:55:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:07,735 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 315 transitions. [2021-11-02 12:55:07,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 315 transitions. [2021-11-02 12:55:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:55:07,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:07,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:07,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 12:55:07,736 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:07,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:07,737 INFO L85 PathProgramCache]: Analyzing trace with hash 683816117, now seen corresponding path program 1 times [2021-11-02 12:55:07,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:07,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070995474] [2021-11-02 12:55:07,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:07,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:11,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:11,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070995474] [2021-11-02 12:55:11,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070995474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:11,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:11,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-02 12:55:11,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090370837] [2021-11-02 12:55:11,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 12:55:11,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:11,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 12:55:11,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:55:11,272 INFO L87 Difference]: Start difference. First operand 285 states and 315 transitions. Second operand has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 23 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:13,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:33,395 INFO L93 Difference]: Finished difference Result 600 states and 660 transitions. [2021-11-02 12:55:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-02 12:55:33,395 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 23 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:55:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:33,397 INFO L225 Difference]: With dead ends: 600 [2021-11-02 12:55:33,397 INFO L226 Difference]: Without dead ends: 527 [2021-11-02 12:55:33,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 6291.26ms TimeCoverageRelationStatistics Valid=586, Invalid=2170, Unknown=0, NotChecked=0, Total=2756 [2021-11-02 12:55:33,398 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 877 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 5462 mSolverCounterSat, 113 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15980.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.41ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 5462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16980.20ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:33,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 0 Invalid, 5576 Unknown, 0 Unchecked, 44.41ms Time], IncrementalHoareTripleChecker [113 Valid, 5462 Invalid, 1 Unknown, 0 Unchecked, 16980.20ms Time] [2021-11-02 12:55:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-11-02 12:55:33,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 326. [2021-11-02 12:55:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 315 states have (on average 1.1396825396825396) internal successors, (359), 325 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 359 transitions. [2021-11-02 12:55:33,407 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 359 transitions. Word has length 87 [2021-11-02 12:55:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:33,408 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 359 transitions. [2021-11-02 12:55:33,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 23 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 359 transitions. [2021-11-02 12:55:33,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:55:33,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:33,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:33,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 12:55:33,409 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1529149475, now seen corresponding path program 1 times [2021-11-02 12:55:33,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:33,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017573428] [2021-11-02 12:55:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:33,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:33,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:33,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017573428] [2021-11-02 12:55:33,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017573428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:33,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:33,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:55:33,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224994814] [2021-11-02 12:55:33,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:55:33,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:55:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:55:33,634 INFO L87 Difference]: Start difference. First operand 326 states and 359 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2021-11-02 12:55:36,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:38,822 INFO L93 Difference]: Finished difference Result 417 states and 462 transitions. [2021-11-02 12:55:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:55:38,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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 [2021-11-02 12:55:38,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:38,823 INFO L225 Difference]: With dead ends: 417 [2021-11-02 12:55:38,823 INFO L226 Difference]: Without dead ends: 379 [2021-11-02 12:55:38,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.85ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:55:38,824 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4632.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5098.07ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:38,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 838 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [2 Valid, 835 Invalid, 1 Unknown, 0 Unchecked, 5098.07ms Time] [2021-11-02 12:55:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-02 12:55:38,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 329. [2021-11-02 12:55:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 318 states have (on average 1.1383647798742138) internal successors, (362), 328 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 362 transitions. [2021-11-02 12:55:38,835 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 362 transitions. Word has length 88 [2021-11-02 12:55:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:38,835 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 362 transitions. [2021-11-02 12:55:38,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2021-11-02 12:55:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 362 transitions. [2021-11-02 12:55:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 12:55:38,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:38,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:38,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 12:55:38,836 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:38,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:38,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1415784400, now seen corresponding path program 1 times [2021-11-02 12:55:38,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:38,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6012226] [2021-11-02 12:55:38,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:38,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:39,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:39,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6012226] [2021-11-02 12:55:39,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6012226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:39,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:39,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:55:39,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429710098] [2021-11-02 12:55:39,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:55:39,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:55:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:55:39,255 INFO L87 Difference]: Start difference. First operand 329 states and 362 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:41,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:45,978 INFO L93 Difference]: Finished difference Result 466 states and 510 transitions. [2021-11-02 12:55:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:55:45,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 12:55:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:45,985 INFO L225 Difference]: With dead ends: 466 [2021-11-02 12:55:45,985 INFO L226 Difference]: Without dead ends: 449 [2021-11-02 12:55:45,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 549.10ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:55:45,985 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5858.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.08ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6274.81ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:45,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 1474 Unknown, 0 Unchecked, 11.08ms Time], IncrementalHoareTripleChecker [88 Valid, 1385 Invalid, 1 Unknown, 0 Unchecked, 6274.81ms Time] [2021-11-02 12:55:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-02 12:55:45,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 333. [2021-11-02 12:55:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 322 states have (on average 1.1335403726708075) internal successors, (365), 332 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 365 transitions. [2021-11-02 12:55:45,996 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 365 transitions. Word has length 89 [2021-11-02 12:55:45,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:45,996 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 365 transitions. [2021-11-02 12:55:45,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 365 transitions. [2021-11-02 12:55:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 12:55:45,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:45,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:45,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 12:55:45,998 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash 606437774, now seen corresponding path program 1 times [2021-11-02 12:55:45,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:45,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956459384] [2021-11-02 12:55:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:45,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:46,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:46,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956459384] [2021-11-02 12:55:46,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956459384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:46,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:46,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:55:46,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541634357] [2021-11-02 12:55:46,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:55:46,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:55:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:55:46,267 INFO L87 Difference]: Start difference. First operand 333 states and 365 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:48,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:51,660 INFO L93 Difference]: Finished difference Result 508 states and 557 transitions. [2021-11-02 12:55:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:55:51,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 12:55:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:51,662 INFO L225 Difference]: With dead ends: 508 [2021-11-02 12:55:51,662 INFO L226 Difference]: Without dead ends: 446 [2021-11-02 12:55:51,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 265.01ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:55:51,663 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 498 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4817.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.58ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5165.08ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:51,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 0 Invalid, 965 Unknown, 0 Unchecked, 8.58ms Time], IncrementalHoareTripleChecker [25 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 5165.08ms Time] [2021-11-02 12:55:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-02 12:55:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 344. [2021-11-02 12:55:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 333 states have (on average 1.135135135135135) internal successors, (378), 343 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 378 transitions. [2021-11-02 12:55:51,674 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 378 transitions. Word has length 89 [2021-11-02 12:55:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:51,674 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 378 transitions. [2021-11-02 12:55:51,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 378 transitions. [2021-11-02 12:55:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 12:55:51,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:51,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:51,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 12:55:51,675 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:51,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:51,676 INFO L85 PathProgramCache]: Analyzing trace with hash -158098262, now seen corresponding path program 1 times [2021-11-02 12:55:51,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:51,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342032681] [2021-11-02 12:55:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:51,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:52,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:52,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342032681] [2021-11-02 12:55:52,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342032681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:52,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:52,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:55:52,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033877640] [2021-11-02 12:55:52,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:55:52,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:55:52,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:55:52,111 INFO L87 Difference]: Start difference. First operand 344 states and 378 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:55,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:57,597 INFO L93 Difference]: Finished difference Result 370 states and 407 transitions. [2021-11-02 12:55:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:55:57,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 12:55:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:57,598 INFO L225 Difference]: With dead ends: 370 [2021-11-02 12:55:57,598 INFO L226 Difference]: Without dead ends: 368 [2021-11-02 12:55:57,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 237.98ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:55:57,599 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 387 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4906.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.75ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5344.39ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:57,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 0 Invalid, 624 Unknown, 0 Unchecked, 4.75ms Time], IncrementalHoareTripleChecker [3 Valid, 620 Invalid, 1 Unknown, 0 Unchecked, 5344.39ms Time] [2021-11-02 12:55:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-11-02 12:55:57,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 342. [2021-11-02 12:55:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 332 states have (on average 1.1325301204819278) internal successors, (376), 341 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 376 transitions. [2021-11-02 12:55:57,609 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 376 transitions. Word has length 89 [2021-11-02 12:55:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:57,609 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 376 transitions. [2021-11-02 12:55:57,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 376 transitions. [2021-11-02 12:55:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 12:55:57,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:57,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:57,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 12:55:57,611 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash 325039054, now seen corresponding path program 1 times [2021-11-02 12:55:57,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:57,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778624658] [2021-11-02 12:55:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:57,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:02,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:02,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778624658] [2021-11-02 12:56:02,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778624658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:02,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:02,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-02 12:56:02,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3309920] [2021-11-02 12:56:02,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 12:56:02,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 12:56:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-11-02 12:56:02,399 INFO L87 Difference]: Start difference. First operand 342 states and 376 transitions. Second operand has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:04,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:29,640 INFO L93 Difference]: Finished difference Result 694 states and 760 transitions. [2021-11-02 12:56:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 12:56:29,641 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 12:56:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:29,643 INFO L225 Difference]: With dead ends: 694 [2021-11-02 12:56:29,643 INFO L226 Difference]: Without dead ends: 675 [2021-11-02 12:56:29,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 11935.62ms TimeCoverageRelationStatistics Valid=1415, Invalid=4905, Unknown=0, NotChecked=0, Total=6320 [2021-11-02 12:56:29,645 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2225 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 4906 mSolverCounterSat, 456 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15653.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.60ms SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 4906 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16688.82ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:29,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2225 Valid, 0 Invalid, 5363 Unknown, 0 Unchecked, 48.60ms Time], IncrementalHoareTripleChecker [456 Valid, 4906 Invalid, 1 Unknown, 0 Unchecked, 16688.82ms Time] [2021-11-02 12:56:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-02 12:56:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 445. [2021-11-02 12:56:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 435 states have (on average 1.1494252873563218) internal successors, (500), 444 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 500 transitions. [2021-11-02 12:56:29,660 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 500 transitions. Word has length 89 [2021-11-02 12:56:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:29,660 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 500 transitions. [2021-11-02 12:56:29,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 500 transitions. [2021-11-02 12:56:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 12:56:29,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:29,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:29,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 12:56:29,661 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:29,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1308608748, now seen corresponding path program 1 times [2021-11-02 12:56:29,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:29,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822059348] [2021-11-02 12:56:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:29,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:29,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:29,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822059348] [2021-11-02 12:56:29,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822059348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:29,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:29,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:56:29,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136401295] [2021-11-02 12:56:29,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:56:29,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:29,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:56:29,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:56:29,905 INFO L87 Difference]: Start difference. First operand 445 states and 500 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:32,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:35,601 INFO L93 Difference]: Finished difference Result 844 states and 942 transitions. [2021-11-02 12:56:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:56:35,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 12:56:35,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:35,603 INFO L225 Difference]: With dead ends: 844 [2021-11-02 12:56:35,603 INFO L226 Difference]: Without dead ends: 623 [2021-11-02 12:56:35,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 280.39ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:56:35,604 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 310 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4930.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.71ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5430.18ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:35,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 0 Invalid, 783 Unknown, 0 Unchecked, 6.71ms Time], IncrementalHoareTripleChecker [17 Valid, 765 Invalid, 1 Unknown, 0 Unchecked, 5430.18ms Time] [2021-11-02 12:56:35,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-11-02 12:56:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 445. [2021-11-02 12:56:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 435 states have (on average 1.1471264367816092) internal successors, (499), 444 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 499 transitions. [2021-11-02 12:56:35,620 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 499 transitions. Word has length 90 [2021-11-02 12:56:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:35,620 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 499 transitions. [2021-11-02 12:56:35,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 499 transitions. [2021-11-02 12:56:35,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 12:56:35,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:35,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:35,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 12:56:35,621 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:35,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:35,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1801234922, now seen corresponding path program 1 times [2021-11-02 12:56:35,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:35,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033101407] [2021-11-02 12:56:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:35,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:40,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:40,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033101407] [2021-11-02 12:56:40,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033101407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:40,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:40,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-02 12:56:40,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15308337] [2021-11-02 12:56:40,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 12:56:40,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 12:56:40,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:56:40,619 INFO L87 Difference]: Start difference. First operand 445 states and 499 transitions. Second operand has 23 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 23 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:43,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:01,608 INFO L93 Difference]: Finished difference Result 922 states and 1047 transitions. [2021-11-02 12:57:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 12:57:01,608 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 23 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 12:57:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:01,610 INFO L225 Difference]: With dead ends: 922 [2021-11-02 12:57:01,610 INFO L226 Difference]: Without dead ends: 863 [2021-11-02 12:57:01,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 5225.91ms TimeCoverageRelationStatistics Valid=360, Invalid=1710, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 12:57:01,612 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1087 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 4772 mSolverCounterSat, 80 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15972.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.40ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4772 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17059.67ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:01,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 0 Invalid, 4853 Unknown, 0 Unchecked, 47.40ms Time], IncrementalHoareTripleChecker [80 Valid, 4772 Invalid, 1 Unknown, 0 Unchecked, 17059.67ms Time] [2021-11-02 12:57:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-11-02 12:57:01,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 455. [2021-11-02 12:57:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 445 states have (on average 1.148314606741573) internal successors, (511), 454 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 511 transitions. [2021-11-02 12:57:01,629 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 511 transitions. Word has length 90 [2021-11-02 12:57:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:01,629 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 511 transitions. [2021-11-02 12:57:01,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 23 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 511 transitions. [2021-11-02 12:57:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 12:57:01,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:01,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:01,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 12:57:01,630 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash 905384472, now seen corresponding path program 1 times [2021-11-02 12:57:01,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:01,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593487523] [2021-11-02 12:57:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:01,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:05,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:05,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593487523] [2021-11-02 12:57:05,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593487523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:05,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:05,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:57:05,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435008276] [2021-11-02 12:57:05,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:57:05,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:57:05,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:57:05,522 INFO L87 Difference]: Start difference. First operand 455 states and 511 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:08,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:13,273 INFO L93 Difference]: Finished difference Result 629 states and 711 transitions. [2021-11-02 12:57:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:57:13,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 12:57:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:13,275 INFO L225 Difference]: With dead ends: 629 [2021-11-02 12:57:13,275 INFO L226 Difference]: Without dead ends: 570 [2021-11-02 12:57:13,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1181.60ms TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:57:13,276 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 804 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6369.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.16ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6932.53ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:13,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 0 Invalid, 1273 Unknown, 0 Unchecked, 14.16ms Time], IncrementalHoareTripleChecker [32 Valid, 1240 Invalid, 1 Unknown, 0 Unchecked, 6932.53ms Time] [2021-11-02 12:57:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-11-02 12:57:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 445. [2021-11-02 12:57:13,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 435 states have (on average 1.1448275862068966) internal successors, (498), 444 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 498 transitions. [2021-11-02 12:57:13,292 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 498 transitions. Word has length 90 [2021-11-02 12:57:13,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:13,292 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 498 transitions. [2021-11-02 12:57:13,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:13,292 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 498 transitions. [2021-11-02 12:57:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 12:57:13,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:13,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:13,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 12:57:13,293 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:13,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:13,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1608435668, now seen corresponding path program 1 times [2021-11-02 12:57:13,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:13,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248522164] [2021-11-02 12:57:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:13,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:14,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:14,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248522164] [2021-11-02 12:57:14,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248522164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:14,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:14,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:57:14,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846043471] [2021-11-02 12:57:14,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:57:14,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:57:14,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:57:14,254 INFO L87 Difference]: Start difference. First operand 445 states and 498 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:17,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:23,534 INFO L93 Difference]: Finished difference Result 597 states and 665 transitions. [2021-11-02 12:57:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:57:23,534 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 12:57:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:23,536 INFO L225 Difference]: With dead ends: 597 [2021-11-02 12:57:23,536 INFO L226 Difference]: Without dead ends: 595 [2021-11-02 12:57:23,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1562.37ms TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:57:23,537 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 751 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7584.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.28ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8168.69ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:23,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 0 Invalid, 2145 Unknown, 0 Unchecked, 15.28ms Time], IncrementalHoareTripleChecker [48 Valid, 2096 Invalid, 1 Unknown, 0 Unchecked, 8168.69ms Time] [2021-11-02 12:57:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-02 12:57:23,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 484. [2021-11-02 12:57:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 474 states have (on average 1.139240506329114) internal successors, (540), 483 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 540 transitions. [2021-11-02 12:57:23,554 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 540 transitions. Word has length 91 [2021-11-02 12:57:23,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:23,554 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 540 transitions. [2021-11-02 12:57:23,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 540 transitions. [2021-11-02 12:57:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 12:57:23,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:23,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:23,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 12:57:23,555 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:23,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:23,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1728563988, now seen corresponding path program 1 times [2021-11-02 12:57:23,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:23,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956830511] [2021-11-02 12:57:23,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:23,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:24,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:24,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956830511] [2021-11-02 12:57:24,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956830511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:24,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:24,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:57:24,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965193167] [2021-11-02 12:57:24,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:57:24,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:24,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:57:24,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:57:24,446 INFO L87 Difference]: Start difference. First operand 484 states and 540 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:26,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:34,227 INFO L93 Difference]: Finished difference Result 732 states and 825 transitions. [2021-11-02 12:57:34,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:57:34,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 12:57:34,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:34,229 INFO L225 Difference]: With dead ends: 732 [2021-11-02 12:57:34,229 INFO L226 Difference]: Without dead ends: 487 [2021-11-02 12:57:34,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1747.09ms TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:57:34,230 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 399 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7763.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.80ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8394.16ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:34,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 0 Invalid, 2275 Unknown, 0 Unchecked, 16.80ms Time], IncrementalHoareTripleChecker [53 Valid, 2221 Invalid, 1 Unknown, 0 Unchecked, 8394.16ms Time] [2021-11-02 12:57:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-11-02 12:57:34,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 463. [2021-11-02 12:57:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 453 states have (on average 1.1368653421633554) internal successors, (515), 462 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 515 transitions. [2021-11-02 12:57:34,266 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 515 transitions. Word has length 91 [2021-11-02 12:57:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:34,267 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 515 transitions. [2021-11-02 12:57:34,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 515 transitions. [2021-11-02 12:57:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 12:57:34,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:34,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:34,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 12:57:34,268 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1449665940, now seen corresponding path program 1 times [2021-11-02 12:57:34,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:34,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438384823] [2021-11-02 12:57:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:34,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:34,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:34,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438384823] [2021-11-02 12:57:34,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438384823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:34,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:34,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:57:34,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495201824] [2021-11-02 12:57:34,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:57:34,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:57:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:57:34,595 INFO L87 Difference]: Start difference. First operand 463 states and 515 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:37,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:42,389 INFO L93 Difference]: Finished difference Result 731 states and 819 transitions. [2021-11-02 12:57:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:57:42,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 12:57:42,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:42,391 INFO L225 Difference]: With dead ends: 731 [2021-11-02 12:57:42,391 INFO L226 Difference]: Without dead ends: 637 [2021-11-02 12:57:42,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 735.80ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:57:42,392 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 568 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6573.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.83ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7120.60ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:42,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 0 Invalid, 1800 Unknown, 0 Unchecked, 12.83ms Time], IncrementalHoareTripleChecker [35 Valid, 1764 Invalid, 1 Unknown, 0 Unchecked, 7120.60ms Time] [2021-11-02 12:57:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-11-02 12:57:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 459. [2021-11-02 12:57:42,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 449 states have (on average 1.133630289532294) internal successors, (509), 458 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 509 transitions. [2021-11-02 12:57:42,409 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 509 transitions. Word has length 91 [2021-11-02 12:57:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:42,409 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 509 transitions. [2021-11-02 12:57:42,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 509 transitions. [2021-11-02 12:57:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 12:57:42,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:42,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:42,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 12:57:42,410 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:42,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:42,410 INFO L85 PathProgramCache]: Analyzing trace with hash 192807151, now seen corresponding path program 1 times [2021-11-02 12:57:42,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:42,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951548259] [2021-11-02 12:57:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:42,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:47,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:47,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951548259] [2021-11-02 12:57:47,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951548259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:47,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:47,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-02 12:57:47,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315000810] [2021-11-02 12:57:47,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 12:57:47,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 12:57:47,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:57:47,472 INFO L87 Difference]: Start difference. First operand 459 states and 509 transitions. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:49,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:07,766 INFO L93 Difference]: Finished difference Result 756 states and 847 transitions. [2021-11-02 12:58:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-02 12:58:07,767 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 12:58:07,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:07,769 INFO L225 Difference]: With dead ends: 756 [2021-11-02 12:58:07,769 INFO L226 Difference]: Without dead ends: 752 [2021-11-02 12:58:07,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 6929.92ms TimeCoverageRelationStatistics Valid=665, Invalid=3625, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 12:58:07,770 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1144 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 4792 mSolverCounterSat, 211 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13455.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.69ms SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 4792 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14292.86ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:07,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 0 Invalid, 5004 Unknown, 0 Unchecked, 42.69ms Time], IncrementalHoareTripleChecker [211 Valid, 4792 Invalid, 1 Unknown, 0 Unchecked, 14292.86ms Time] [2021-11-02 12:58:07,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-02 12:58:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 471. [2021-11-02 12:58:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 462 states have (on average 1.1363636363636365) internal successors, (525), 470 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 525 transitions. [2021-11-02 12:58:07,789 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 525 transitions. Word has length 92 [2021-11-02 12:58:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:07,789 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 525 transitions. [2021-11-02 12:58:07,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 525 transitions. [2021-11-02 12:58:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 12:58:07,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:07,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:07,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 12:58:07,791 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:07,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash 481688654, now seen corresponding path program 1 times [2021-11-02 12:58:07,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:07,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870390358] [2021-11-02 12:58:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:07,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:10,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:10,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870390358] [2021-11-02 12:58:10,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870390358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:10,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:10,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 12:58:10,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739359247] [2021-11-02 12:58:10,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:58:10,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:58:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:58:10,219 INFO L87 Difference]: Start difference. First operand 471 states and 525 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 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) [2021-11-02 12:58:12,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:20,047 INFO L93 Difference]: Finished difference Result 681 states and 764 transitions. [2021-11-02 12:58:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:58:20,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 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 [2021-11-02 12:58:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:20,049 INFO L225 Difference]: With dead ends: 681 [2021-11-02 12:58:20,049 INFO L226 Difference]: Without dead ends: 553 [2021-11-02 12:58:20,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2100.69ms TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:58:20,050 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1025 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7530.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.57ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8128.45ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:20,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 0 Invalid, 2181 Unknown, 0 Unchecked, 17.57ms Time], IncrementalHoareTripleChecker [52 Valid, 2128 Invalid, 1 Unknown, 0 Unchecked, 8128.45ms Time] [2021-11-02 12:58:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-11-02 12:58:20,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 505. [2021-11-02 12:58:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 496 states have (on average 1.1471774193548387) internal successors, (569), 504 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 569 transitions. [2021-11-02 12:58:20,071 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 569 transitions. Word has length 93 [2021-11-02 12:58:20,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:20,071 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 569 transitions. [2021-11-02 12:58:20,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 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) [2021-11-02 12:58:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 569 transitions. [2021-11-02 12:58:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:58:20,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:20,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:20,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 12:58:20,072 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:20,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:20,072 INFO L85 PathProgramCache]: Analyzing trace with hash 45596109, now seen corresponding path program 1 times [2021-11-02 12:58:20,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:20,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484416069] [2021-11-02 12:58:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:20,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:20,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:20,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484416069] [2021-11-02 12:58:20,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484416069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:20,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:20,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 12:58:20,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101886792] [2021-11-02 12:58:20,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:58:20,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:20,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:58:20,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:58:20,777 INFO L87 Difference]: Start difference. First operand 505 states and 569 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:22,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:28,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:28,045 INFO L93 Difference]: Finished difference Result 704 states and 790 transitions. [2021-11-02 12:58:28,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:58:28,045 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 12:58:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:28,046 INFO L225 Difference]: With dead ends: 704 [2021-11-02 12:58:28,047 INFO L226 Difference]: Without dead ends: 543 [2021-11-02 12:58:28,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1460.91ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:58:28,047 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 498 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5611.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.17ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6054.46ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:28,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 0 Invalid, 1474 Unknown, 0 Unchecked, 12.17ms Time], IncrementalHoareTripleChecker [40 Valid, 1433 Invalid, 1 Unknown, 0 Unchecked, 6054.46ms Time] [2021-11-02 12:58:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-02 12:58:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 525. [2021-11-02 12:58:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 516 states have (on average 1.1414728682170543) internal successors, (589), 524 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) [2021-11-02 12:58:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 589 transitions. [2021-11-02 12:58:28,070 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 589 transitions. Word has length 94 [2021-11-02 12:58:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:28,070 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 589 transitions. [2021-11-02 12:58:28,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 589 transitions. [2021-11-02 12:58:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:58:28,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:28,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:28,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 12:58:28,071 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:28,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2074182219, now seen corresponding path program 1 times [2021-11-02 12:58:28,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:28,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287528547] [2021-11-02 12:58:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:28,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:29,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:29,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287528547] [2021-11-02 12:58:29,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287528547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:29,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:29,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:58:29,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117333566] [2021-11-02 12:58:29,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:58:29,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:58:29,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:58:29,151 INFO L87 Difference]: Start difference. First operand 525 states and 589 transitions. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:31,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:36,827 INFO L93 Difference]: Finished difference Result 698 states and 783 transitions. [2021-11-02 12:58:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:58:36,827 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 12:58:36,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:36,828 INFO L225 Difference]: With dead ends: 698 [2021-11-02 12:58:36,828 INFO L226 Difference]: Without dead ends: 496 [2021-11-02 12:58:36,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1292.87ms TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:58:36,829 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 491 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6352.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.17ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6892.82ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:36,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 0 Invalid, 1442 Unknown, 0 Unchecked, 14.17ms Time], IncrementalHoareTripleChecker [58 Valid, 1383 Invalid, 1 Unknown, 0 Unchecked, 6892.82ms Time] [2021-11-02 12:58:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-02 12:58:36,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 480. [2021-11-02 12:58:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 471 states have (on average 1.1464968152866242) internal successors, (540), 479 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:36,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 540 transitions. [2021-11-02 12:58:36,863 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 540 transitions. Word has length 94 [2021-11-02 12:58:36,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:36,863 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 540 transitions. [2021-11-02 12:58:36,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:36,863 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 540 transitions. [2021-11-02 12:58:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 12:58:36,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:36,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:36,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 12:58:36,865 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1328469076, now seen corresponding path program 1 times [2021-11-02 12:58:36,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:36,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726953686] [2021-11-02 12:58:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:36,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:37,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:37,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726953686] [2021-11-02 12:58:37,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726953686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:37,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:37,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:58:37,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370846533] [2021-11-02 12:58:37,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:58:37,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:37,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:58:37,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:58:37,240 INFO L87 Difference]: Start difference. First operand 480 states and 540 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 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) [2021-11-02 12:58:39,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:41,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:41,061 INFO L93 Difference]: Finished difference Result 641 states and 727 transitions. [2021-11-02 12:58:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:58:41,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 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 [2021-11-02 12:58:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:41,062 INFO L225 Difference]: With dead ends: 641 [2021-11-02 12:58:41,063 INFO L226 Difference]: Without dead ends: 439 [2021-11-02 12:58:41,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.31ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:58:41,063 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 220 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3413.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3735.14ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:41,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 0 Invalid, 559 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [2 Valid, 556 Invalid, 1 Unknown, 0 Unchecked, 3735.14ms Time] [2021-11-02 12:58:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-02 12:58:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 376. [2021-11-02 12:58:41,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 367 states have (on average 1.1280653950953679) internal successors, (414), 375 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 414 transitions. [2021-11-02 12:58:41,078 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 414 transitions. Word has length 97 [2021-11-02 12:58:41,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:41,079 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 414 transitions. [2021-11-02 12:58:41,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 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) [2021-11-02 12:58:41,079 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 414 transitions. [2021-11-02 12:58:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 12:58:41,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:41,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:41,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-02 12:58:41,080 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1890620677, now seen corresponding path program 1 times [2021-11-02 12:58:41,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:41,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967914962] [2021-11-02 12:58:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:41,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:41,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:41,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967914962] [2021-11-02 12:58:41,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967914962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:41,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:41,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:58:41,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282025090] [2021-11-02 12:58:41,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:58:41,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:41,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:58:41,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:58:41,429 INFO L87 Difference]: Start difference. First operand 376 states and 414 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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) [2021-11-02 12:58:43,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:47,597 INFO L93 Difference]: Finished difference Result 546 states and 605 transitions. [2021-11-02 12:58:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:58:47,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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 [2021-11-02 12:58:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:47,599 INFO L225 Difference]: With dead ends: 546 [2021-11-02 12:58:47,599 INFO L226 Difference]: Without dead ends: 456 [2021-11-02 12:58:47,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 376.37ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:58:47,600 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 373 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5407.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.88ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5886.41ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:47,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 0 Invalid, 1353 Unknown, 0 Unchecked, 7.88ms Time], IncrementalHoareTripleChecker [19 Valid, 1333 Invalid, 1 Unknown, 0 Unchecked, 5886.41ms Time] [2021-11-02 12:58:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-02 12:58:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 376. [2021-11-02 12:58:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 367 states have (on average 1.1226158038147138) internal successors, (412), 375 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 412 transitions. [2021-11-02 12:58:47,614 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 412 transitions. Word has length 97 [2021-11-02 12:58:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:47,615 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 412 transitions. [2021-11-02 12:58:47,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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) [2021-11-02 12:58:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 412 transitions. [2021-11-02 12:58:47,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 12:58:47,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:47,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:47,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-02 12:58:47,616 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1383278265, now seen corresponding path program 1 times [2021-11-02 12:58:47,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:47,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069614033] [2021-11-02 12:58:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:47,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:48,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:48,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069614033] [2021-11-02 12:58:48,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069614033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:48,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:48,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:58:48,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48654242] [2021-11-02 12:58:48,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:58:48,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:58:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:58:48,572 INFO L87 Difference]: Start difference. First operand 376 states and 412 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) [2021-11-02 12:58:51,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:55,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:55,005 INFO L93 Difference]: Finished difference Result 435 states and 471 transitions. [2021-11-02 12:58:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:58:55,005 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 [2021-11-02 12:58:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:55,006 INFO L225 Difference]: With dead ends: 435 [2021-11-02 12:58:55,006 INFO L226 Difference]: Without dead ends: 433 [2021-11-02 12:58:55,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 899.42ms TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:58:55,007 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 860 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5369.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.44ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5886.19ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:55,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 0 Invalid, 1184 Unknown, 0 Unchecked, 10.44ms Time], IncrementalHoareTripleChecker [38 Valid, 1145 Invalid, 1 Unknown, 0 Unchecked, 5886.19ms Time] [2021-11-02 12:58:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-02 12:58:55,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 376. [2021-11-02 12:58:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 367 states have (on average 1.119891008174387) internal successors, (411), 375 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 411 transitions. [2021-11-02 12:58:55,022 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 411 transitions. Word has length 97 [2021-11-02 12:58:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:55,024 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 411 transitions. [2021-11-02 12:58:55,024 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) [2021-11-02 12:58:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 411 transitions. [2021-11-02 12:58:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 12:58:55,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:55,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:55,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-02 12:58:55,025 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:55,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:55,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1393361552, now seen corresponding path program 1 times [2021-11-02 12:58:55,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:55,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721524435] [2021-11-02 12:58:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:55,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:55,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:55,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721524435] [2021-11-02 12:58:55,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721524435] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:58:55,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224351530] [2021-11-02 12:58:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:55,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:58:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:58:55,524 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:58:55,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 12:58:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:56,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-02 12:58:56,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:58:56,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 12:58:56,809 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 12:58:56,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-02 12:58:56,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-02 12:58:56,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-02 12:58:57,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-02 12:58:57,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-02 12:58:57,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-02 12:58:57,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-02 12:58:59,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:58:59,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-11-02 12:58:59,874 INFO L354 Elim1Store]: treesize reduction 298, result has 22.2 percent of original size [2021-11-02 12:58:59,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 76 treesize of output 135 [2021-11-02 12:59:01,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:59:01,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:59:01,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:59:01,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 24 [2021-11-02 12:59:01,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:59:01,552 INFO L354 Elim1Store]: treesize reduction 67, result has 17.3 percent of original size [2021-11-02 12:59:01,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 50 [2021-11-02 12:59:01,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:59:01,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 25 [2021-11-02 12:59:03,000 INFO L354 Elim1Store]: treesize reduction 82, result has 14.6 percent of original size [2021-11-02 12:59:03,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 81 [2021-11-02 12:59:03,429 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-02 12:59:03,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 55 [2021-11-02 12:59:03,489 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-02 12:59:03,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 56 [2021-11-02 12:59:17,658 INFO L354 Elim1Store]: treesize reduction 1267, result has 13.0 percent of original size [2021-11-02 12:59:17,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 64 case distinctions, treesize of input 195 treesize of output 280 Killed by 15