./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_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_cursor_eq_byte_buf_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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:04:11,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:04:11,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:04:11,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:04:11,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:04:11,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:04:11,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:04:11,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:04:11,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:04:11,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:04:11,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:04:11,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:04:11,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:04:11,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:04:11,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:04:11,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:04:11,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:04:11,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:04:11,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:04:11,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:04:11,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:04:11,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:04:11,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:04:11,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:04:11,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:04:11,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:04:11,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:04:11,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:04:11,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:04:11,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:04:11,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:04:11,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:04:11,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:04:11,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:04:11,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:04:11,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:04:11,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:04:11,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:04:11,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:04:11,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:04:11,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:04:11,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:04:12,003 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:04:12,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:04:12,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:04:12,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:04:12,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:04:12,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:04:12,005 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:04:12,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:04:12,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:04:12,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:04:12,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:04:12,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:04:12,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:04:12,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:04:12,007 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:04:12,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:04:12,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:04:12,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:04:12,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:04:12,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:04:12,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:04:12,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:04:12,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:04:12,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:04:12,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:04:12,009 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:04:12,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:04:12,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:04:12,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:04:12,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-02 13:04:12,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:04:12,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:04:12,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:04:12,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:04:12,203 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:04:12,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-02 13:04:12,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403ca53a4/2d1b4d2f1f784ae4afbc0f799c494686/FLAG22f2248d1 [2021-11-02 13:04:12,839 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:04:12,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-02 13:04:12,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403ca53a4/2d1b4d2f1f784ae4afbc0f799c494686/FLAG22f2248d1 [2021-11-02 13:04:13,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403ca53a4/2d1b4d2f1f784ae4afbc0f799c494686 [2021-11-02 13:04:13,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:04:13,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:04:13,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:04:13,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:04:13,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:04:13,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:04:13" (1/1) ... [2021-11-02 13:04:13,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446e0270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:13, skipping insertion in model container [2021-11-02 13:04:13,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:04:13" (1/1) ... [2021-11-02 13:04:13,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:04:13,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:04:13,569 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_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-02 13:04:13,576 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_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-02 13:04:13,595 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:04:13,615 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:04:14,084 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,086 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,093 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,093 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,094 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,095 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:04:14,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:04:14,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:04:14,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:04:14,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:04:14,294 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:04:14,294 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:04:14,295 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:04:14,295 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:04:14,295 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:04:14,380 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:04:14,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:04:14,622 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:04:14,639 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_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-02 13:04:14,641 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_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-02 13:04:14,643 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:04:14,644 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:04:14,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,697 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,697 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:04:14,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:04:14,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:04:14,734 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:04:14,734 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:04:14,735 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:04:14,735 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:04:14,738 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:04:14,738 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:04:14,739 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:04:14,762 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:04:14,809 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,809 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:04:14,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:04:14,994 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:04:14,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14 WrapperNode [2021-11-02 13:04:14,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:04:14,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:04:14,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:04:14,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:04:15,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:04:15,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:04:15,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:04:15,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:04:15,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:04:15,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:04:15,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:04:15,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:04:15,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (1/1) ... [2021-11-02 13:04:15,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:04:15,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:04:15,331 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 13:04:15,350 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 13:04:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 13:04:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:04:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:04:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:04:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:04:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:04:15,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:04:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:04:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:04:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:04:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:04:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:04:19,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:04:19,896 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-11-02 13:04:19,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:04:19 BoogieIcfgContainer [2021-11-02 13:04:19,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:04:19,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:04:19,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:04:19,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:04:19,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:04:13" (1/3) ... [2021-11-02 13:04:19,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e32bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:04:19, skipping insertion in model container [2021-11-02 13:04:19,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:04:14" (2/3) ... [2021-11-02 13:04:19,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e32bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:04:19, skipping insertion in model container [2021-11-02 13:04:19,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:04:19" (3/3) ... [2021-11-02 13:04:19,908 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-11-02 13:04:19,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:04:19,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-02 13:04:19,958 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:04:19,965 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 13:04:19,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-02 13:04:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 13:04:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 13:04:19,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:19,992 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 13:04:19,993 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:04:19,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1810806174, now seen corresponding path program 1 times [2021-11-02 13:04:20,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:20,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933614493] [2021-11-02 13:04:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:20,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:20,637 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 13:04:20,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:20,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933614493] [2021-11-02 13:04:20,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933614493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:20,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:20,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:04:20,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267832564] [2021-11-02 13:04:20,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:04:20,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:04:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:04:20,663 INFO L87 Difference]: Start difference. First operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 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 13:04:22,736 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 13:04:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:24,345 INFO L93 Difference]: Finished difference Result 444 states and 617 transitions. [2021-11-02 13:04:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:04:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 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 13:04:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:24,360 INFO L225 Difference]: With dead ends: 444 [2021-11-02 13:04:24,361 INFO L226 Difference]: Without dead ends: 217 [2021-11-02 13:04:24,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:04:24,366 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3189.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3594.09ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:24,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 285 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 1 Unknown, 0 Unchecked, 3594.09ms Time] [2021-11-02 13:04:24,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-02 13:04:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-02 13:04:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3480392156862746) internal successors, (275), 216 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 13:04:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 275 transitions. [2021-11-02 13:04:24,405 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 275 transitions. Word has length 53 [2021-11-02 13:04:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:24,406 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 275 transitions. [2021-11-02 13:04:24,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 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 13:04:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 275 transitions. [2021-11-02 13:04:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 13:04:24,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:24,432 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 13:04:24,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:04:24,433 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:04:24,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1818889704, now seen corresponding path program 1 times [2021-11-02 13:04:24,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:24,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899702060] [2021-11-02 13:04:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:24,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:24,776 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 13:04:24,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:24,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899702060] [2021-11-02 13:04:24,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899702060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:24,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:24,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:04:24,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728058037] [2021-11-02 13:04:24,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:04:24,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:24,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:04:24,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:04:24,779 INFO L87 Difference]: Start difference. First operand 217 states and 275 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 13:04:26,835 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 13:04:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:29,040 INFO L93 Difference]: Finished difference Result 413 states and 523 transitions. [2021-11-02 13:04:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:04:29,040 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 13:04:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:29,042 INFO L225 Difference]: With dead ends: 413 [2021-11-02 13:04:29,042 INFO L226 Difference]: Without dead ends: 217 [2021-11-02 13:04:29,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.78ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:04:29,043 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3795.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.60ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4188.72ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:29,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 497 Unknown, 0 Unchecked, 15.60ms Time], IncrementalHoareTripleChecker [5 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 4188.72ms Time] [2021-11-02 13:04:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-02 13:04:29,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-02 13:04:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3333333333333333) internal successors, (272), 216 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 13:04:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 272 transitions. [2021-11-02 13:04:29,058 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 272 transitions. Word has length 53 [2021-11-02 13:04:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:29,059 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 272 transitions. [2021-11-02 13:04:29,059 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 13:04:29,059 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 272 transitions. [2021-11-02 13:04:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 13:04:29,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:29,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:04:29,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 13:04:29,063 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:04:29,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:29,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1514747006, now seen corresponding path program 1 times [2021-11-02 13:04:29,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:29,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948212720] [2021-11-02 13:04:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:29,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:29,405 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 13:04:29,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:29,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948212720] [2021-11-02 13:04:29,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948212720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:29,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:29,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:04:29,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116313898] [2021-11-02 13:04:29,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:04:29,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:29,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:04:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:04:29,408 INFO L87 Difference]: Start difference. First operand 217 states and 272 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:31,460 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 13:04:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:33,558 INFO L93 Difference]: Finished difference Result 385 states and 482 transitions. [2021-11-02 13:04:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:04:33,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 13:04:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:33,560 INFO L225 Difference]: With dead ends: 385 [2021-11-02 13:04:33,560 INFO L226 Difference]: Without dead ends: 217 [2021-11-02 13:04:33,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.60ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:04:33,563 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3718.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.21ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4092.54ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:33,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 469 Unknown, 0 Unchecked, 8.21ms Time], IncrementalHoareTripleChecker [4 Valid, 464 Invalid, 1 Unknown, 0 Unchecked, 4092.54ms Time] [2021-11-02 13:04:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-02 13:04:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-02 13:04:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3235294117647058) internal successors, (270), 216 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 13:04:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 270 transitions. [2021-11-02 13:04:33,574 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 270 transitions. Word has length 57 [2021-11-02 13:04:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:33,575 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 270 transitions. [2021-11-02 13:04:33,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 270 transitions. [2021-11-02 13:04:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 13:04:33,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:33,577 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] [2021-11-02 13:04:33,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 13:04:33,577 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:04:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:33,578 INFO L85 PathProgramCache]: Analyzing trace with hash 319412887, now seen corresponding path program 1 times [2021-11-02 13:04:33,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:33,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193097428] [2021-11-02 13:04:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:33,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:34,071 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 13:04:34,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:34,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193097428] [2021-11-02 13:04:34,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193097428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:34,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:34,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:04:34,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534431580] [2021-11-02 13:04:34,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:04:34,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:34,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:04:34,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:04:34,074 INFO L87 Difference]: Start difference. First operand 217 states and 270 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:04:36,135 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 13:04:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:38,428 INFO L93 Difference]: Finished difference Result 326 states and 400 transitions. [2021-11-02 13:04:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:04:38,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-02 13:04:38,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:38,430 INFO L225 Difference]: With dead ends: 326 [2021-11-02 13:04:38,430 INFO L226 Difference]: Without dead ends: 217 [2021-11-02 13:04:38,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 308.87ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:04:38,431 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 751 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3909.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.28ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4131.09ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:38,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 0 Invalid, 565 Unknown, 0 Unchecked, 15.28ms Time], IncrementalHoareTripleChecker [5 Valid, 559 Invalid, 1 Unknown, 0 Unchecked, 4131.09ms Time] [2021-11-02 13:04:38,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-02 13:04:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-02 13:04:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3186274509803921) internal successors, (269), 216 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 13:04:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 269 transitions. [2021-11-02 13:04:38,438 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 269 transitions. Word has length 63 [2021-11-02 13:04:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:38,439 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 269 transitions. [2021-11-02 13:04:38,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:04:38,439 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 269 transitions. [2021-11-02 13:04:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 13:04:38,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:38,441 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 13:04:38,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 13:04:38,441 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:04:38,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:38,442 INFO L85 PathProgramCache]: Analyzing trace with hash 321872050, now seen corresponding path program 1 times [2021-11-02 13:04:38,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:38,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98513148] [2021-11-02 13:04:38,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:38,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:38,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:38,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98513148] [2021-11-02 13:04:38,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98513148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:38,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:38,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:04:38,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785387201] [2021-11-02 13:04:38,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:04:38,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:38,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:04:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:04:38,814 INFO L87 Difference]: Start difference. First operand 217 states and 269 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 13:04:40,859 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 13:04:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:43,243 INFO L93 Difference]: Finished difference Result 345 states and 424 transitions. [2021-11-02 13:04:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:04:43,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 13:04:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:43,245 INFO L225 Difference]: With dead ends: 345 [2021-11-02 13:04:43,245 INFO L226 Difference]: Without dead ends: 217 [2021-11-02 13:04:43,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 275.05ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:04:43,247 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 762 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3865.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.02ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4226.80ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:43,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 0 Invalid, 538 Unknown, 0 Unchecked, 13.02ms Time], IncrementalHoareTripleChecker [6 Valid, 531 Invalid, 1 Unknown, 0 Unchecked, 4226.80ms Time] [2021-11-02 13:04:43,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-02 13:04:43,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-02 13:04:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3088235294117647) internal successors, (267), 216 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 13:04:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 267 transitions. [2021-11-02 13:04:43,283 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 267 transitions. Word has length 65 [2021-11-02 13:04:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:43,283 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 267 transitions. [2021-11-02 13:04:43,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 13:04:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 267 transitions. [2021-11-02 13:04:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 13:04:43,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:43,285 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] [2021-11-02 13:04:43,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 13:04:43,285 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:04:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1147926727, now seen corresponding path program 1 times [2021-11-02 13:04:43,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:43,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049037002] [2021-11-02 13:04:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:43,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:44,161 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 13:04:44,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:44,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049037002] [2021-11-02 13:04:44,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049037002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:44,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:44,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:04:44,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535930291] [2021-11-02 13:04:44,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:04:44,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:04:44,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:04:44,164 INFO L87 Difference]: Start difference. First operand 217 states and 267 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 13:04:46,219 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 13:05:07,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:07,893 INFO L93 Difference]: Finished difference Result 1734 states and 2163 transitions. [2021-11-02 13:05:07,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-02 13:05:07,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-02 13:05:07,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:07,898 INFO L225 Difference]: With dead ends: 1734 [2021-11-02 13:05:07,898 INFO L226 Difference]: Without dead ends: 1615 [2021-11-02 13:05:07,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 5977.32ms TimeCoverageRelationStatistics Valid=799, Invalid=2983, Unknown=0, NotChecked=0, Total=3782 [2021-11-02 13:05:07,900 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2568 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 4768 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16675.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2568 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.53ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17707.97ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:07,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2568 Valid, 0 Invalid, 4830 Unknown, 0 Unchecked, 64.53ms Time], IncrementalHoareTripleChecker [61 Valid, 4768 Invalid, 1 Unknown, 0 Unchecked, 17707.97ms Time] [2021-11-02 13:05:07,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-11-02 13:05:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 262. [2021-11-02 13:05:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 249 states have (on average 1.3052208835341366) internal successors, (325), 261 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 13:05:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 325 transitions. [2021-11-02 13:05:07,913 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 325 transitions. Word has length 71 [2021-11-02 13:05:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:07,913 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 325 transitions. [2021-11-02 13:05:07,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 13:05:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 325 transitions. [2021-11-02 13:05:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 13:05:07,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:07,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:05:07,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 13:05:07,915 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:05:07,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:07,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1396073221, now seen corresponding path program 1 times [2021-11-02 13:05:07,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:07,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686496452] [2021-11-02 13:05:07,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:07,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:08,103 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 13:05:08,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:08,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686496452] [2021-11-02 13:05:08,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686496452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:08,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:08,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:05:08,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786551961] [2021-11-02 13:05:08,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:05:08,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:05:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:05:08,105 INFO L87 Difference]: Start difference. First operand 262 states and 325 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 13:05:10,150 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 13:05:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:12,629 INFO L93 Difference]: Finished difference Result 480 states and 597 transitions. [2021-11-02 13:05:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:05:12,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-02 13:05:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:12,631 INFO L225 Difference]: With dead ends: 480 [2021-11-02 13:05:12,631 INFO L226 Difference]: Without dead ends: 302 [2021-11-02 13:05:12,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:05:12,632 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4150.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.92ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4458.47ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:12,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 828 Unknown, 0 Unchecked, 4.92ms Time], IncrementalHoareTripleChecker [13 Valid, 814 Invalid, 1 Unknown, 0 Unchecked, 4458.47ms Time] [2021-11-02 13:05:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-02 13:05:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 270. [2021-11-02 13:05:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 257 states have (on average 1.2918287937743191) internal successors, (332), 269 states have internal predecessors, (332), 0 states have call successors, (0), 0 states 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 13:05:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 332 transitions. [2021-11-02 13:05:12,640 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 332 transitions. Word has length 71 [2021-11-02 13:05:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:12,640 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 332 transitions. [2021-11-02 13:05:12,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 13:05:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 332 transitions. [2021-11-02 13:05:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 13:05:12,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:12,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:05:12,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 13:05:12,642 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:05:12,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:12,643 INFO L85 PathProgramCache]: Analyzing trace with hash 132412342, now seen corresponding path program 1 times [2021-11-02 13:05:12,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:12,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075959038] [2021-11-02 13:05:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:12,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:13,003 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 13:05:13,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:13,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075959038] [2021-11-02 13:05:13,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075959038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:13,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:13,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:05:13,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528408433] [2021-11-02 13:05:13,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:05:13,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:13,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:05:13,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:05:13,005 INFO L87 Difference]: Start difference. First operand 270 states and 332 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 13:05:15,499 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 13:05:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:20,624 INFO L93 Difference]: Finished difference Result 782 states and 944 transitions. [2021-11-02 13:05:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 13:05:20,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 13:05:20,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:20,627 INFO L225 Difference]: With dead ends: 782 [2021-11-02 13:05:20,627 INFO L226 Difference]: Without dead ends: 659 [2021-11-02 13:05:20,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 386.25ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:05:20,628 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 894 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6800.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.93ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7241.44ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:20,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 0 Invalid, 1448 Unknown, 0 Unchecked, 14.93ms Time], IncrementalHoareTripleChecker [10 Valid, 1437 Invalid, 1 Unknown, 0 Unchecked, 7241.44ms Time] [2021-11-02 13:05:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-11-02 13:05:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 299. [2021-11-02 13:05:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 286 states have (on average 1.2867132867132867) internal successors, (368), 298 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 13:05:20,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 368 transitions. [2021-11-02 13:05:20,640 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 368 transitions. Word has length 72 [2021-11-02 13:05:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:20,640 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 368 transitions. [2021-11-02 13:05:20,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 13:05:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 368 transitions. [2021-11-02 13:05:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 13:05:20,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:20,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:05:20,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 13:05:20,642 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:05:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash -547646028, now seen corresponding path program 1 times [2021-11-02 13:05:20,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:20,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082553366] [2021-11-02 13:05:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:20,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:21,234 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 13:05:21,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:21,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082553366] [2021-11-02 13:05:21,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082553366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:21,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:21,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:05:21,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801255514] [2021-11-02 13:05:21,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:05:21,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:05:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:05:21,236 INFO L87 Difference]: Start difference. First operand 299 states and 368 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 13:05:24,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:05:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:28,233 INFO L93 Difference]: Finished difference Result 466 states and 565 transitions. [2021-11-02 13:05:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:05:28,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 13:05:28,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:28,236 INFO L225 Difference]: With dead ends: 466 [2021-11-02 13:05:28,236 INFO L226 Difference]: Without dead ends: 462 [2021-11-02 13:05:28,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 178.85ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:05:28,237 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 278 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6446.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.50ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6872.03ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:28,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 0 Invalid, 1298 Unknown, 0 Unchecked, 8.50ms Time], IncrementalHoareTripleChecker [19 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 6872.03ms Time] [2021-11-02 13:05:28,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-02 13:05:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 307. [2021-11-02 13:05:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 294 states have (on average 1.2789115646258504) internal successors, (376), 306 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 13:05:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 376 transitions. [2021-11-02 13:05:28,247 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 376 transitions. Word has length 72 [2021-11-02 13:05:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:28,247 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 376 transitions. [2021-11-02 13:05:28,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 13:05:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 376 transitions. [2021-11-02 13:05:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 13:05:28,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:28,248 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 13:05:28,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 13:05:28,249 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:05:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash 838129070, now seen corresponding path program 1 times [2021-11-02 13:05:28,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:28,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481311704] [2021-11-02 13:05:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:28,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:05:28,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:28,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481311704] [2021-11-02 13:05:28,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481311704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:28,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:28,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:05:28,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827652882] [2021-11-02 13:05:28,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:05:28,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:05:28,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:05:28,660 INFO L87 Difference]: Start difference. First operand 307 states and 376 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 13:05:30,719 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 13:05:34,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:34,243 INFO L93 Difference]: Finished difference Result 548 states and 661 transitions. [2021-11-02 13:05:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:05:34,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 13:05:34,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:34,245 INFO L225 Difference]: With dead ends: 548 [2021-11-02 13:05:34,245 INFO L226 Difference]: Without dead ends: 424 [2021-11-02 13:05:34,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 309.12ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:05:34,246 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 638 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5081.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5356.44ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:34,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 0 Invalid, 1227 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [19 Valid, 1207 Invalid, 1 Unknown, 0 Unchecked, 5356.44ms Time] [2021-11-02 13:05:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-02 13:05:34,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 310. [2021-11-02 13:05:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 297 states have (on average 1.2760942760942762) internal successors, (379), 309 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 13:05:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 379 transitions. [2021-11-02 13:05:34,263 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 379 transitions. Word has length 76 [2021-11-02 13:05:34,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:34,263 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 379 transitions. [2021-11-02 13:05:34,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 13:05:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 379 transitions. [2021-11-02 13:05:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 13:05:34,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:34,264 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] [2021-11-02 13:05:34,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 13:05:34,264 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:05:34,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1215429817, now seen corresponding path program 1 times [2021-11-02 13:05:34,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:34,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186356417] [2021-11-02 13:05:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:34,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:35,140 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 13:05:35,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:35,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186356417] [2021-11-02 13:05:35,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186356417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:35,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:35,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 13:05:35,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054427325] [2021-11-02 13:05:35,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:05:35,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:05:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:05:35,141 INFO L87 Difference]: Start difference. First operand 310 states and 379 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:05:37,607 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 13:05:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:44,769 INFO L93 Difference]: Finished difference Result 800 states and 967 transitions. [2021-11-02 13:05:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 13:05:44,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-02 13:05:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:44,772 INFO L225 Difference]: With dead ends: 800 [2021-11-02 13:05:44,772 INFO L226 Difference]: Without dead ends: 634 [2021-11-02 13:05:44,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1177.73ms TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-02 13:05:44,773 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1766 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8149.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.66ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8640.24ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:44,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 0 Invalid, 1965 Unknown, 0 Unchecked, 21.66ms Time], IncrementalHoareTripleChecker [35 Valid, 1929 Invalid, 1 Unknown, 0 Unchecked, 8640.24ms Time] [2021-11-02 13:05:44,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-11-02 13:05:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 408. [2021-11-02 13:05:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 395 states have (on average 1.2759493670886075) internal successors, (504), 407 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 13:05:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 504 transitions. [2021-11-02 13:05:44,785 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 504 transitions. Word has length 79 [2021-11-02 13:05:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:44,785 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 504 transitions. [2021-11-02 13:05:44,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:05:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 504 transitions. [2021-11-02 13:05:44,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 13:05:44,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:44,786 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] [2021-11-02 13:05:44,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 13:05:44,787 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:05:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1304167923, now seen corresponding path program 1 times [2021-11-02 13:05:44,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:44,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140711743] [2021-11-02 13:05:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:44,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:45,242 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 13:05:45,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:45,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140711743] [2021-11-02 13:05:45,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140711743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:45,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:45,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:05:45,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540125288] [2021-11-02 13:05:45,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:05:45,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:45,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:05:45,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:05:45,243 INFO L87 Difference]: Start difference. First operand 408 states and 504 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 13:05:47,296 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 13:05:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:55,844 INFO L93 Difference]: Finished difference Result 1501 states and 1876 transitions. [2021-11-02 13:05:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 13:05:55,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-02 13:05:55,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:55,848 INFO L225 Difference]: With dead ends: 1501 [2021-11-02 13:05:55,848 INFO L226 Difference]: Without dead ends: 1257 [2021-11-02 13:05:55,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1439.80ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:05:55,850 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1803 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8516.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.01ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9160.59ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:55,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 0 Invalid, 2030 Unknown, 0 Unchecked, 22.01ms Time], IncrementalHoareTripleChecker [47 Valid, 1982 Invalid, 1 Unknown, 0 Unchecked, 9160.59ms Time] [2021-11-02 13:05:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2021-11-02 13:05:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 408. [2021-11-02 13:05:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 395 states have (on average 1.270886075949367) internal successors, (502), 407 states have internal predecessors, (502), 0 states have call successors, (0), 0 states 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 13:05:55,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 502 transitions. [2021-11-02 13:05:55,868 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 502 transitions. Word has length 82 [2021-11-02 13:05:55,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:55,868 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 502 transitions. [2021-11-02 13:05:55,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 13:05:55,869 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 502 transitions. [2021-11-02 13:05:55,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 13:05:55,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:55,870 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] [2021-11-02 13:05:55,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 13:05:55,870 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:05:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1957590975, now seen corresponding path program 1 times [2021-11-02 13:05:55,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:55,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820861664] [2021-11-02 13:05:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:55,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:56,844 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 13:05:56,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:56,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820861664] [2021-11-02 13:05:56,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820861664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:56,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:56,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:05:56,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840833867] [2021-11-02 13:05:56,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:05:56,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:05:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:05:56,846 INFO L87 Difference]: Start difference. First operand 408 states and 502 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 13:06:00,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:05,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:05,717 INFO L93 Difference]: Finished difference Result 882 states and 1065 transitions. [2021-11-02 13:06:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:06:05,717 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-02 13:06:05,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:05,719 INFO L225 Difference]: With dead ends: 882 [2021-11-02 13:06:05,719 INFO L226 Difference]: Without dead ends: 633 [2021-11-02 13:06:05,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 842.24ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-11-02 13:06:05,720 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2828 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7761.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.85ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8267.18ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:05,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2828 Valid, 0 Invalid, 1337 Unknown, 0 Unchecked, 18.85ms Time], IncrementalHoareTripleChecker [35 Valid, 1301 Invalid, 1 Unknown, 0 Unchecked, 8267.18ms Time] [2021-11-02 13:06:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-02 13:06:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 408. [2021-11-02 13:06:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 395 states have (on average 1.2658227848101267) internal successors, (500), 407 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 13:06:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 500 transitions. [2021-11-02 13:06:05,731 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 500 transitions. Word has length 82 [2021-11-02 13:06:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:05,731 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 500 transitions. [2021-11-02 13:06:05,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 13:06:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 500 transitions. [2021-11-02 13:06:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 13:06:05,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:05,732 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] [2021-11-02 13:06:05,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 13:06:05,732 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:06:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1647086499, now seen corresponding path program 1 times [2021-11-02 13:06:05,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:05,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110682895] [2021-11-02 13:06:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:05,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:06,121 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 13:06:06,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:06,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110682895] [2021-11-02 13:06:06,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110682895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:06,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:06,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:06:06,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830764396] [2021-11-02 13:06:06,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:06:06,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:06:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:06:06,122 INFO L87 Difference]: Start difference. First operand 408 states and 500 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:09,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:14,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:14,170 INFO L93 Difference]: Finished difference Result 644 states and 769 transitions. [2021-11-02 13:06:14,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:06:14,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 13:06:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:14,173 INFO L225 Difference]: With dead ends: 644 [2021-11-02 13:06:14,173 INFO L226 Difference]: Without dead ends: 640 [2021-11-02 13:06:14,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 191.91ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:06:14,174 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 251 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7442.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.73ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7894.04ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:14,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 0 Invalid, 1290 Unknown, 0 Unchecked, 10.73ms Time], IncrementalHoareTripleChecker [19 Valid, 1270 Invalid, 1 Unknown, 0 Unchecked, 7894.04ms Time] [2021-11-02 13:06:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-02 13:06:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 420. [2021-11-02 13:06:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 407 states have (on average 1.257985257985258) internal successors, (512), 419 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 13:06:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 512 transitions. [2021-11-02 13:06:14,188 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 512 transitions. Word has length 83 [2021-11-02 13:06:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:14,188 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 512 transitions. [2021-11-02 13:06:14,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 512 transitions. [2021-11-02 13:06:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 13:06:14,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:14,190 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] [2021-11-02 13:06:14,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 13:06:14,190 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:06:14,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:14,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1801952335, now seen corresponding path program 1 times [2021-11-02 13:06:14,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:14,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094254550] [2021-11-02 13:06:14,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:14,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:15,324 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 13:06:15,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:15,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094254550] [2021-11-02 13:06:15,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094254550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:15,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:15,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 13:06:15,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946461738] [2021-11-02 13:06:15,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 13:06:15,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:15,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 13:06:15,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:06:15,326 INFO L87 Difference]: Start difference. First operand 420 states and 512 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:18,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:28,035 INFO L93 Difference]: Finished difference Result 1109 states and 1347 transitions. [2021-11-02 13:06:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 13:06:28,036 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 13:06:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:28,039 INFO L225 Difference]: With dead ends: 1109 [2021-11-02 13:06:28,039 INFO L226 Difference]: Without dead ends: 936 [2021-11-02 13:06:28,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1357.66ms TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-11-02 13:06:28,040 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2018 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11056.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.94ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11704.26ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:28,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2018 Valid, 0 Invalid, 2577 Unknown, 0 Unchecked, 30.94ms Time], IncrementalHoareTripleChecker [59 Valid, 2517 Invalid, 1 Unknown, 0 Unchecked, 11704.26ms Time] [2021-11-02 13:06:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-11-02 13:06:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 576. [2021-11-02 13:06:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 563 states have (on average 1.2682060390763765) internal successors, (714), 575 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 13:06:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 714 transitions. [2021-11-02 13:06:28,058 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 714 transitions. Word has length 83 [2021-11-02 13:06:28,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:28,059 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 714 transitions. [2021-11-02 13:06:28,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 714 transitions. [2021-11-02 13:06:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 13:06:28,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:28,060 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] [2021-11-02 13:06:28,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 13:06:28,061 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:06:28,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2098648175, now seen corresponding path program 1 times [2021-11-02 13:06:28,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:28,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137057977] [2021-11-02 13:06:28,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:28,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:28,621 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 13:06:28,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:28,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137057977] [2021-11-02 13:06:28,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137057977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:28,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:28,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:06:28,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826926667] [2021-11-02 13:06:28,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:06:28,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:28,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:06:28,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:06:28,623 INFO L87 Difference]: Start difference. First operand 576 states and 714 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:32,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:39,720 INFO L93 Difference]: Finished difference Result 856 states and 1034 transitions. [2021-11-02 13:06:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:06:39,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 13:06:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:39,723 INFO L225 Difference]: With dead ends: 856 [2021-11-02 13:06:39,724 INFO L226 Difference]: Without dead ends: 725 [2021-11-02 13:06:39,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 413.92ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:06:39,725 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 681 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10158.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.52ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10758.65ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:39,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 0 Invalid, 2250 Unknown, 0 Unchecked, 21.52ms Time], IncrementalHoareTripleChecker [17 Valid, 2232 Invalid, 1 Unknown, 0 Unchecked, 10758.65ms Time] [2021-11-02 13:06:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-02 13:06:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 576. [2021-11-02 13:06:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 563 states have (on average 1.266429840142096) internal successors, (713), 575 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 13:06:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 713 transitions. [2021-11-02 13:06:39,743 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 713 transitions. Word has length 83 [2021-11-02 13:06:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:39,744 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 713 transitions. [2021-11-02 13:06:39,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:39,744 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 713 transitions. [2021-11-02 13:06:39,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 13:06:39,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:39,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:06:39,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 13:06:39,745 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:06:39,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:39,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1516260751, now seen corresponding path program 1 times [2021-11-02 13:06:39,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:39,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943500828] [2021-11-02 13:06:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:39,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:40,370 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 13:06:40,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:40,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943500828] [2021-11-02 13:06:40,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943500828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:40,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:40,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:06:40,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255122755] [2021-11-02 13:06:40,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:06:40,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:06:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:06:40,372 INFO L87 Difference]: Start difference. First operand 576 states and 713 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:42,878 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 13:06:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:49,956 INFO L93 Difference]: Finished difference Result 1240 states and 1526 transitions. [2021-11-02 13:06:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:06:49,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 13:06:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:49,958 INFO L225 Difference]: With dead ends: 1240 [2021-11-02 13:06:49,958 INFO L226 Difference]: Without dead ends: 735 [2021-11-02 13:06:49,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 266.29ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:06:49,960 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 155 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8874.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.02ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9365.43ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:49,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 0 Invalid, 2170 Unknown, 0 Unchecked, 16.02ms Time], IncrementalHoareTripleChecker [22 Valid, 2147 Invalid, 1 Unknown, 0 Unchecked, 9365.43ms Time] [2021-11-02 13:06:49,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-02 13:06:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 576. [2021-11-02 13:06:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 563 states have (on average 1.2593250444049733) internal successors, (709), 575 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 13:06:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 709 transitions. [2021-11-02 13:06:49,976 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 709 transitions. Word has length 83 [2021-11-02 13:06:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:49,977 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 709 transitions. [2021-11-02 13:06:49,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:49,977 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 709 transitions. [2021-11-02 13:06:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 13:06:49,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:49,978 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 13:06:49,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 13:06:49,978 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:06:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1029822425, now seen corresponding path program 1 times [2021-11-02 13:06:49,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:49,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012327682] [2021-11-02 13:06:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:49,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:50,284 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 13:06:50,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:50,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012327682] [2021-11-02 13:06:50,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012327682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:50,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:50,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:06:50,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614046469] [2021-11-02 13:06:50,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:06:50,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:50,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:06:50,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:06:50,286 INFO L87 Difference]: Start difference. First operand 576 states and 709 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 13:06:52,344 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 13:06:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:55,581 INFO L93 Difference]: Finished difference Result 1638 states and 2023 transitions. [2021-11-02 13:06:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:06:55,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 13:06:55,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:55,585 INFO L225 Difference]: With dead ends: 1638 [2021-11-02 13:06:55,585 INFO L226 Difference]: Without dead ends: 1165 [2021-11-02 13:06:55,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 143.24ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:06:55,586 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 531 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4726.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.80ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5144.21ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:55,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 0 Invalid, 853 Unknown, 0 Unchecked, 7.80ms Time], IncrementalHoareTripleChecker [20 Valid, 832 Invalid, 1 Unknown, 0 Unchecked, 5144.21ms Time] [2021-11-02 13:06:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-02 13:06:55,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 656. [2021-11-02 13:06:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 643 states have (on average 1.2612752721617417) internal successors, (811), 655 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 13:06:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 811 transitions. [2021-11-02 13:06:55,610 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 811 transitions. Word has length 87 [2021-11-02 13:06:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:55,610 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 811 transitions. [2021-11-02 13:06:55,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 13:06:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 811 transitions. [2021-11-02 13:06:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 13:06:55,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:55,612 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 13:06:55,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 13:06:55,612 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:06:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1709880795, now seen corresponding path program 1 times [2021-11-02 13:06:55,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:55,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332427306] [2021-11-02 13:06:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:55,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:56,243 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 13:06:56,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:56,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332427306] [2021-11-02 13:06:56,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332427306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:56,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:56,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:06:56,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395035205] [2021-11-02 13:06:56,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:06:56,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:56,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:06:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:06:56,245 INFO L87 Difference]: Start difference. First operand 656 states and 811 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 13:06:58,289 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 13:07:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:08,394 INFO L93 Difference]: Finished difference Result 2160 states and 2682 transitions. [2021-11-02 13:07:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 13:07:08,395 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 13:07:08,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:08,399 INFO L225 Difference]: With dead ends: 2160 [2021-11-02 13:07:08,400 INFO L226 Difference]: Without dead ends: 1834 [2021-11-02 13:07:08,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1924.50ms TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2021-11-02 13:07:08,401 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2461 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9910.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.22ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10370.65ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:08,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2461 Valid, 0 Invalid, 3000 Unknown, 0 Unchecked, 29.22ms Time], IncrementalHoareTripleChecker [89 Valid, 2910 Invalid, 1 Unknown, 0 Unchecked, 10370.65ms Time] [2021-11-02 13:07:08,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2021-11-02 13:07:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1035. [2021-11-02 13:07:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1022 states have (on average 1.2661448140900196) internal successors, (1294), 1034 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states 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 13:07:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1294 transitions. [2021-11-02 13:07:08,433 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1294 transitions. Word has length 87 [2021-11-02 13:07:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:08,433 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1294 transitions. [2021-11-02 13:07:08,433 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 13:07:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1294 transitions. [2021-11-02 13:07:08,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 13:07:08,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:08,435 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 13:07:08,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 13:07:08,435 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:07:08,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash 600594920, now seen corresponding path program 1 times [2021-11-02 13:07:08,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:08,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334817802] [2021-11-02 13:07:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:08,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:09,213 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 13:07:09,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:09,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334817802] [2021-11-02 13:07:09,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334817802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:09,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:09,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:07:09,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517962308] [2021-11-02 13:07:09,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:07:09,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:07:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:07:09,214 INFO L87 Difference]: Start difference. First operand 1035 states and 1294 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 13:07:11,751 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 13:07:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:22,410 INFO L93 Difference]: Finished difference Result 1683 states and 2067 transitions. [2021-11-02 13:07:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-02 13:07:22,411 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 13:07:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:22,415 INFO L225 Difference]: With dead ends: 1683 [2021-11-02 13:07:22,415 INFO L226 Difference]: Without dead ends: 1681 [2021-11-02 13:07:22,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 2947.15ms TimeCoverageRelationStatistics Valid=352, Invalid=980, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 13:07:22,416 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2163 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9852.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.09ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10434.15ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:22,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2163 Valid, 0 Invalid, 2608 Unknown, 0 Unchecked, 28.09ms Time], IncrementalHoareTripleChecker [61 Valid, 2546 Invalid, 1 Unknown, 0 Unchecked, 10434.15ms Time] [2021-11-02 13:07:22,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2021-11-02 13:07:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1062. [2021-11-02 13:07:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1049 states have (on average 1.2669208770257387) internal successors, (1329), 1061 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states 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 13:07:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1329 transitions. [2021-11-02 13:07:22,447 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1329 transitions. Word has length 87 [2021-11-02 13:07:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:22,447 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 1329 transitions. [2021-11-02 13:07:22,448 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 13:07:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1329 transitions. [2021-11-02 13:07:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 13:07:22,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:22,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:22,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 13:07:22,449 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:07:22,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1451715357, now seen corresponding path program 1 times [2021-11-02 13:07:22,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:22,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599032289] [2021-11-02 13:07:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:22,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:25,697 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 13:07:25,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:25,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599032289] [2021-11-02 13:07:25,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599032289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:25,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:25,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:07:25,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941919565] [2021-11-02 13:07:25,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:07:25,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:07:25,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:07:25,699 INFO L87 Difference]: Start difference. First operand 1062 states and 1329 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 13:07:28,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:33,188 INFO L93 Difference]: Finished difference Result 2766 states and 3480 transitions. [2021-11-02 13:07:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:07:33,189 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 13:07:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:33,193 INFO L225 Difference]: With dead ends: 2766 [2021-11-02 13:07:33,195 INFO L226 Difference]: Without dead ends: 1890 [2021-11-02 13:07:33,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 721.67ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:07:33,197 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1611 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6462.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.59ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6865.43ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:33,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1611 Valid, 0 Invalid, 1587 Unknown, 0 Unchecked, 15.59ms Time], IncrementalHoareTripleChecker [27 Valid, 1559 Invalid, 1 Unknown, 0 Unchecked, 6865.43ms Time] [2021-11-02 13:07:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-11-02 13:07:33,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1634. [2021-11-02 13:07:33,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1621 states have (on average 1.2732880937692783) internal successors, (2064), 1633 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 13:07:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2064 transitions. [2021-11-02 13:07:33,264 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2064 transitions. Word has length 87 [2021-11-02 13:07:33,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:33,265 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 2064 transitions. [2021-11-02 13:07:33,265 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 13:07:33,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2064 transitions. [2021-11-02 13:07:33,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 13:07:33,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:33,267 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 13:07:33,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 13:07:33,268 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:07:33,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1434920090, now seen corresponding path program 1 times [2021-11-02 13:07:33,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:33,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902133058] [2021-11-02 13:07:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:33,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:07:33,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:33,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902133058] [2021-11-02 13:07:33,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902133058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:33,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:33,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:07:33,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996670430] [2021-11-02 13:07:33,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:07:33,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:33,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:07:33,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:07:33,445 INFO L87 Difference]: Start difference. First operand 1634 states and 2064 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 13:07:35,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:38,299 INFO L93 Difference]: Finished difference Result 2639 states and 3317 transitions. [2021-11-02 13:07:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:07:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 13:07:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:38,303 INFO L225 Difference]: With dead ends: 2639 [2021-11-02 13:07:38,303 INFO L226 Difference]: Without dead ends: 1157 [2021-11-02 13:07:38,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:07:38,305 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4470.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4763.33ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:38,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 796 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [5 Valid, 790 Invalid, 1 Unknown, 0 Unchecked, 4763.33ms Time] [2021-11-02 13:07:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-02 13:07:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1130. [2021-11-02 13:07:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1117 states have (on average 1.2587287376902416) internal successors, (1406), 1129 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 13:07:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1406 transitions. [2021-11-02 13:07:38,351 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1406 transitions. Word has length 88 [2021-11-02 13:07:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:38,351 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1406 transitions. [2021-11-02 13:07:38,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 13:07:38,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1406 transitions. [2021-11-02 13:07:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 13:07:38,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:38,353 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 13:07:38,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 13:07:38,353 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:07:38,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:38,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1784221018, now seen corresponding path program 1 times [2021-11-02 13:07:38,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:38,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199599817] [2021-11-02 13:07:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:38,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:38,592 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 13:07:38,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:38,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199599817] [2021-11-02 13:07:38,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199599817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:38,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:38,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:07:38,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226941815] [2021-11-02 13:07:38,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:07:38,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:07:38,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:07:38,594 INFO L87 Difference]: Start difference. First operand 1130 states and 1406 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 13:07:41,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:07:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:07:45,297 INFO L93 Difference]: Finished difference Result 2445 states and 3052 transitions. [2021-11-02 13:07:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:07:45,297 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 13:07:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:07:45,301 INFO L225 Difference]: With dead ends: 2445 [2021-11-02 13:07:45,301 INFO L226 Difference]: Without dead ends: 1399 [2021-11-02 13:07:45,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 94.49ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:07:45,303 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 378 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6181.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.91ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6575.89ms IncrementalHoareTripleChecker+Time [2021-11-02 13:07:45,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 0 Invalid, 1074 Unknown, 0 Unchecked, 8.91ms Time], IncrementalHoareTripleChecker [20 Valid, 1053 Invalid, 1 Unknown, 0 Unchecked, 6575.89ms Time] [2021-11-02 13:07:45,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2021-11-02 13:07:45,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1130. [2021-11-02 13:07:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1117 states have (on average 1.2470904207699194) internal successors, (1393), 1129 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:07:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1393 transitions. [2021-11-02 13:07:45,344 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1393 transitions. Word has length 88 [2021-11-02 13:07:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:07:45,344 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1393 transitions. [2021-11-02 13:07:45,345 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 13:07:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1393 transitions. [2021-11-02 13:07:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 13:07:45,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:07:45,346 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 13:07:45,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 13:07:45,347 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:07:45,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:07:45,347 INFO L85 PathProgramCache]: Analyzing trace with hash 940215516, now seen corresponding path program 1 times [2021-11-02 13:07:45,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:07:45,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60490549] [2021-11-02 13:07:45,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:07:45,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:07:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:07:46,701 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 13:07:46,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:07:46,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60490549] [2021-11-02 13:07:46,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60490549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:07:46,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:07:46,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 13:07:46,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122966323] [2021-11-02 13:07:46,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 13:07:46,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:07:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 13:07:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:07:46,703 INFO L87 Difference]: Start difference. First operand 1130 states and 1393 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 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 13:07:48,752 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 13:08:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:08:02,951 INFO L93 Difference]: Finished difference Result 2509 states and 3078 transitions. [2021-11-02 13:08:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 13:08:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 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 13:08:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:08:02,956 INFO L225 Difference]: With dead ends: 2509 [2021-11-02 13:08:02,956 INFO L226 Difference]: Without dead ends: 1531 [2021-11-02 13:08:02,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2578.74ms TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 13:08:02,958 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1810 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 87 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13578.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.75ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14193.12ms IncrementalHoareTripleChecker+Time [2021-11-02 13:08:02,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 0 Invalid, 4532 Unknown, 0 Unchecked, 43.75ms Time], IncrementalHoareTripleChecker [87 Valid, 4444 Invalid, 1 Unknown, 0 Unchecked, 14193.12ms Time] [2021-11-02 13:08:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-11-02 13:08:02,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1067. [2021-11-02 13:08:02,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1054 states have (on average 1.2144212523719164) internal successors, (1280), 1066 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states 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 13:08:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1280 transitions. [2021-11-02 13:08:02,999 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1280 transitions. Word has length 88 [2021-11-02 13:08:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:08:02,999 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 1280 transitions. [2021-11-02 13:08:03,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 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 13:08:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1280 transitions. [2021-11-02 13:08:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 13:08:03,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:08:03,001 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 13:08:03,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 13:08:03,002 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:08:03,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:08:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1433851872, now seen corresponding path program 1 times [2021-11-02 13:08:03,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:08:03,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871395339] [2021-11-02 13:08:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:08:03,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:08:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:08:04,503 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 13:08:04,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:08:04,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871395339] [2021-11-02 13:08:04,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871395339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:08:04,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:08:04,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 13:08:04,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993425753] [2021-11-02 13:08:04,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 13:08:04,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:08:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 13:08:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-02 13:08:04,505 INFO L87 Difference]: Start difference. First operand 1067 states and 1280 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 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 13:08:07,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:08:37,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:08:37,409 INFO L93 Difference]: Finished difference Result 2641 states and 3142 transitions. [2021-11-02 13:08:37,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-02 13:08:37,410 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 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 13:08:37,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:08:37,417 INFO L225 Difference]: With dead ends: 2641 [2021-11-02 13:08:37,417 INFO L226 Difference]: Without dead ends: 2474 [2021-11-02 13:08:37,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2223 ImplicationChecksByTransitivity, 10835.59ms TimeCoverageRelationStatistics Valid=1337, Invalid=5803, Unknown=0, NotChecked=0, Total=7140 [2021-11-02 13:08:37,420 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4890 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 5877 mSolverCounterSat, 112 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21361.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4890 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.19ms SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 5877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22521.42ms IncrementalHoareTripleChecker+Time [2021-11-02 13:08:37,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4890 Valid, 0 Invalid, 5990 Unknown, 0 Unchecked, 75.19ms Time], IncrementalHoareTripleChecker [112 Valid, 5877 Invalid, 1 Unknown, 0 Unchecked, 22521.42ms Time] [2021-11-02 13:08:37,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-11-02 13:08:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1133. [2021-11-02 13:08:37,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1120 states have (on average 1.2116071428571429) internal successors, (1357), 1132 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states 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 13:08:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1357 transitions. [2021-11-02 13:08:37,483 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1357 transitions. Word has length 88 [2021-11-02 13:08:37,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:08:37,483 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 1357 transitions. [2021-11-02 13:08:37,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 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 13:08:37,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1357 transitions. [2021-11-02 13:08:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 13:08:37,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:08:37,487 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 13:08:37,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 13:08:37,487 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:08:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:08:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -479508940, now seen corresponding path program 1 times [2021-11-02 13:08:37,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:08:37,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573417786] [2021-11-02 13:08:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:08:37,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:08:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:08:38,284 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 13:08:38,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:08:38,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573417786] [2021-11-02 13:08:38,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573417786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:08:38,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:08:38,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:08:38,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629157292] [2021-11-02 13:08:38,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:08:38,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:08:38,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:08:38,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:08:38,286 INFO L87 Difference]: Start difference. First operand 1133 states and 1357 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 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 13:08:40,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:08:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:08:53,899 INFO L93 Difference]: Finished difference Result 3396 states and 4110 transitions. [2021-11-02 13:08:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 13:08:53,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 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 13:08:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:08:53,908 INFO L225 Difference]: With dead ends: 3396 [2021-11-02 13:08:53,909 INFO L226 Difference]: Without dead ends: 3210 [2021-11-02 13:08:53,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 4319.91ms TimeCoverageRelationStatistics Valid=539, Invalid=2113, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 13:08:53,911 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2553 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10781.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2553 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.13ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11398.90ms IncrementalHoareTripleChecker+Time [2021-11-02 13:08:53,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2553 Valid, 0 Invalid, 2625 Unknown, 0 Unchecked, 31.13ms Time], IncrementalHoareTripleChecker [76 Valid, 2548 Invalid, 1 Unknown, 0 Unchecked, 11398.90ms Time] [2021-11-02 13:08:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2021-11-02 13:08:53,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 1163. [2021-11-02 13:08:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1150 states have (on average 1.2095652173913043) internal successors, (1391), 1162 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states 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 13:08:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1391 transitions. [2021-11-02 13:08:53,957 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1391 transitions. Word has length 90 [2021-11-02 13:08:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:08:53,958 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1391 transitions. [2021-11-02 13:08:53,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 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 13:08:53,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1391 transitions. [2021-11-02 13:08:53,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 13:08:53,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:08:53,960 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 13:08:53,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 13:08:53,960 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:08:53,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:08:53,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1832928425, now seen corresponding path program 1 times [2021-11-02 13:08:53,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:08:53,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256741622] [2021-11-02 13:08:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:08:53,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:08:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:08:54,593 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 13:08:54,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:08:54,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256741622] [2021-11-02 13:08:54,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256741622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:08:54,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:08:54,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:08:54,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599176847] [2021-11-02 13:08:54,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:08:54,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:08:54,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:08:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:08:54,595 INFO L87 Difference]: Start difference. First operand 1163 states and 1391 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 13:08:56,640 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 13:09:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:03,033 INFO L93 Difference]: Finished difference Result 2559 states and 3056 transitions. [2021-11-02 13:09:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:09:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 13:09:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:03,037 INFO L225 Difference]: With dead ends: 2559 [2021-11-02 13:09:03,037 INFO L226 Difference]: Without dead ends: 1447 [2021-11-02 13:09:03,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 271.03ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:09:03,039 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7738.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.05ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8172.54ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:03,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 1927 Unknown, 0 Unchecked, 14.05ms Time], IncrementalHoareTripleChecker [22 Valid, 1904 Invalid, 1 Unknown, 0 Unchecked, 8172.54ms Time] [2021-11-02 13:09:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2021-11-02 13:09:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1163. [2021-11-02 13:09:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1150 states have (on average 1.1947826086956521) internal successors, (1374), 1162 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 13:09:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1374 transitions. [2021-11-02 13:09:03,074 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1374 transitions. Word has length 91 [2021-11-02 13:09:03,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:03,075 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1374 transitions. [2021-11-02 13:09:03,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 13:09:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1374 transitions. [2021-11-02 13:09:03,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 13:09:03,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:03,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:03,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 13:09:03,077 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:09:03,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash -791746894, now seen corresponding path program 1 times [2021-11-02 13:09:03,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:03,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011646131] [2021-11-02 13:09:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:03,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:03,230 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 13:09:03,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:03,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011646131] [2021-11-02 13:09:03,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011646131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:03,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:03,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:09:03,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351585198] [2021-11-02 13:09:03,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:09:03,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:09:03,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:09:03,231 INFO L87 Difference]: Start difference. First operand 1163 states and 1374 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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 13:09:06,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:09,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:09,486 INFO L93 Difference]: Finished difference Result 1828 states and 2155 transitions. [2021-11-02 13:09:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:09:09,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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 13:09:09,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:09,489 INFO L225 Difference]: With dead ends: 1828 [2021-11-02 13:09:09,489 INFO L226 Difference]: Without dead ends: 698 [2021-11-02 13:09:09,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:09:09,491 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5842.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.89ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6165.68ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:09,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 775 Unknown, 0 Unchecked, 4.89ms Time], IncrementalHoareTripleChecker [11 Valid, 763 Invalid, 1 Unknown, 0 Unchecked, 6165.68ms Time] [2021-11-02 13:09:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-02 13:09:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 668. [2021-11-02 13:09:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 655 states have (on average 1.1740458015267174) internal successors, (769), 667 states have internal predecessors, (769), 0 states have call successors, (0), 0 states 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 13:09:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 769 transitions. [2021-11-02 13:09:09,519 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 769 transitions. Word has length 93 [2021-11-02 13:09:09,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:09,519 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 769 transitions. [2021-11-02 13:09:09,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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 13:09:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 769 transitions. [2021-11-02 13:09:09,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 13:09:09,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:09,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:09,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 13:09:09,521 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:09:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:09,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1013450858, now seen corresponding path program 1 times [2021-11-02 13:09:09,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:09,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595530288] [2021-11-02 13:09:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:09,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:09,979 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 13:09:09,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:09,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595530288] [2021-11-02 13:09:09,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595530288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:09,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:09,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:09:09,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967507755] [2021-11-02 13:09:09,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:09:09,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:09:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:09:09,981 INFO L87 Difference]: Start difference. First operand 668 states and 769 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 13:09:12,034 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 13:09:19,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:19,127 INFO L93 Difference]: Finished difference Result 1162 states and 1325 transitions. [2021-11-02 13:09:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:09:19,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 13:09:19,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:19,130 INFO L225 Difference]: With dead ends: 1162 [2021-11-02 13:09:19,130 INFO L226 Difference]: Without dead ends: 1027 [2021-11-02 13:09:19,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 733.24ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:09:19,131 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 817 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8129.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.90ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8512.02ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:19,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 0 Invalid, 2088 Unknown, 0 Unchecked, 19.90ms Time], IncrementalHoareTripleChecker [34 Valid, 2053 Invalid, 1 Unknown, 0 Unchecked, 8512.02ms Time] [2021-11-02 13:09:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2021-11-02 13:09:19,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 904. [2021-11-02 13:09:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 891 states have (on average 1.1750841750841752) internal successors, (1047), 903 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states 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 13:09:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1047 transitions. [2021-11-02 13:09:19,159 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1047 transitions. Word has length 93 [2021-11-02 13:09:19,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:19,160 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1047 transitions. [2021-11-02 13:09:19,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 13:09:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1047 transitions. [2021-11-02 13:09:19,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 13:09:19,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:19,161 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 13:09:19,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 13:09:19,161 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:09:19,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:19,161 INFO L85 PathProgramCache]: Analyzing trace with hash -95835017, now seen corresponding path program 1 times [2021-11-02 13:09:19,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:19,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332593760] [2021-11-02 13:09:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:19,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:19,748 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 13:09:19,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:19,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332593760] [2021-11-02 13:09:19,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332593760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:19,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:19,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:09:19,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576050802] [2021-11-02 13:09:19,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:09:19,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:19,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:09:19,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:09:19,749 INFO L87 Difference]: Start difference. First operand 904 states and 1047 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 13:09:22,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:28,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:28,534 INFO L93 Difference]: Finished difference Result 1081 states and 1224 transitions. [2021-11-02 13:09:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 13:09:28,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 13:09:28,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:28,536 INFO L225 Difference]: With dead ends: 1081 [2021-11-02 13:09:28,536 INFO L226 Difference]: Without dead ends: 1079 [2021-11-02 13:09:28,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 852.52ms TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-11-02 13:09:28,537 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 965 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7570.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.71ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8066.69ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:28,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 0 Invalid, 1760 Unknown, 0 Unchecked, 16.71ms Time], IncrementalHoareTripleChecker [22 Valid, 1737 Invalid, 1 Unknown, 0 Unchecked, 8066.69ms Time] [2021-11-02 13:09:28,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-02 13:09:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 904. [2021-11-02 13:09:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 891 states have (on average 1.1739618406285073) internal successors, (1046), 903 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 13:09:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1046 transitions. [2021-11-02 13:09:28,569 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1046 transitions. Word has length 93 [2021-11-02 13:09:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:28,569 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1046 transitions. [2021-11-02 13:09:28,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 13:09:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1046 transitions. [2021-11-02 13:09:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 13:09:28,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:28,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:28,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 13:09:28,571 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:09:28,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:28,571 INFO L85 PathProgramCache]: Analyzing trace with hash 755285420, now seen corresponding path program 1 times [2021-11-02 13:09:28,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:28,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335453595] [2021-11-02 13:09:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:28,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:30,599 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 13:09:30,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:30,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335453595] [2021-11-02 13:09:30,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335453595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:30,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:30,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:09:30,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564094168] [2021-11-02 13:09:30,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:09:30,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:09:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:09:30,600 INFO L87 Difference]: Start difference. First operand 904 states and 1046 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 13:09:33,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:39,297 INFO L93 Difference]: Finished difference Result 1318 states and 1518 transitions. [2021-11-02 13:09:39,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:09:39,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 13:09:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:39,300 INFO L225 Difference]: With dead ends: 1318 [2021-11-02 13:09:39,300 INFO L226 Difference]: Without dead ends: 928 [2021-11-02 13:09:39,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 609.57ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:09:39,301 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 984 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 2124 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7801.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.13ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8250.76ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:39,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 0 Invalid, 2153 Unknown, 0 Unchecked, 17.13ms Time], IncrementalHoareTripleChecker [28 Valid, 2124 Invalid, 1 Unknown, 0 Unchecked, 8250.76ms Time] [2021-11-02 13:09:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-11-02 13:09:39,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 710. [2021-11-02 13:09:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 697 states have (on average 1.1649928263988523) internal successors, (812), 709 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 13:09:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 812 transitions. [2021-11-02 13:09:39,322 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 812 transitions. Word has length 93 [2021-11-02 13:09:39,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:39,323 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 812 transitions. [2021-11-02 13:09:39,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 13:09:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 812 transitions. [2021-11-02 13:09:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:09:39,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:39,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:39,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 13:09:39,324 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:09:39,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1390217806, now seen corresponding path program 1 times [2021-11-02 13:09:39,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:39,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618578640] [2021-11-02 13:09:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:39,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:39,575 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 13:09:39,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:39,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618578640] [2021-11-02 13:09:39,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618578640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:39,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:39,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:09:39,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363537665] [2021-11-02 13:09:39,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:09:39,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:39,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:09:39,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:09:39,576 INFO L87 Difference]: Start difference. First operand 710 states and 812 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:09:42,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:09:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:45,852 INFO L93 Difference]: Finished difference Result 1278 states and 1451 transitions. [2021-11-02 13:09:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:09:45,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 13:09:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:45,854 INFO L225 Difference]: With dead ends: 1278 [2021-11-02 13:09:45,854 INFO L226 Difference]: Without dead ends: 927 [2021-11-02 13:09:45,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 220.37ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:09:45,855 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 640 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5709.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.27ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6064.08ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:45,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 0 Invalid, 1220 Unknown, 0 Unchecked, 8.27ms Time], IncrementalHoareTripleChecker [7 Valid, 1212 Invalid, 1 Unknown, 0 Unchecked, 6064.08ms Time] [2021-11-02 13:09:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-02 13:09:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 710. [2021-11-02 13:09:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 697 states have (on average 1.1621233859397417) internal successors, (810), 709 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 13:09:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 810 transitions. [2021-11-02 13:09:45,876 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 810 transitions. Word has length 96 [2021-11-02 13:09:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:45,876 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 810 transitions. [2021-11-02 13:09:45,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:09:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 810 transitions. [2021-11-02 13:09:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:09:45,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:45,881 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] [2021-11-02 13:09:45,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 13:09:45,881 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:09:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 571356852, now seen corresponding path program 1 times [2021-11-02 13:09:45,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:45,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403531680] [2021-11-02 13:09:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:45,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:46,317 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 13:09:46,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:46,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403531680] [2021-11-02 13:09:46,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403531680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:46,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:46,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:09:46,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159428457] [2021-11-02 13:09:46,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:09:46,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:09:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:09:46,319 INFO L87 Difference]: Start difference. First operand 710 states and 810 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:09:48,362 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 13:09:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:09:54,363 INFO L93 Difference]: Finished difference Result 1095 states and 1249 transitions. [2021-11-02 13:09:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 13:09:54,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 13:09:54,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:09:54,365 INFO L225 Difference]: With dead ends: 1095 [2021-11-02 13:09:54,365 INFO L226 Difference]: Without dead ends: 954 [2021-11-02 13:09:54,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1034.86ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-02 13:09:54,366 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 786 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6629.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.11ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7136.59ms IncrementalHoareTripleChecker+Time [2021-11-02 13:09:54,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 0 Invalid, 1949 Unknown, 0 Unchecked, 26.11ms Time], IncrementalHoareTripleChecker [34 Valid, 1914 Invalid, 1 Unknown, 0 Unchecked, 7136.59ms Time] [2021-11-02 13:09:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-11-02 13:09:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 755. [2021-11-02 13:09:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 742 states have (on average 1.1617250673854447) internal successors, (862), 754 states have internal predecessors, (862), 0 states have call successors, (0), 0 states 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 13:09:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 862 transitions. [2021-11-02 13:09:54,387 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 862 transitions. Word has length 96 [2021-11-02 13:09:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:09:54,387 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 862 transitions. [2021-11-02 13:09:54,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:09:54,387 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 862 transitions. [2021-11-02 13:09:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:09:54,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:09:54,388 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] [2021-11-02 13:09:54,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 13:09:54,388 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:09:54,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:09:54,389 INFO L85 PathProgramCache]: Analyzing trace with hash -537929023, now seen corresponding path program 1 times [2021-11-02 13:09:54,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:09:54,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696977415] [2021-11-02 13:09:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:09:54,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:09:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:09:55,319 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 13:09:55,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:09:55,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696977415] [2021-11-02 13:09:55,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696977415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:09:55,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:09:55,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:09:55,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887440524] [2021-11-02 13:09:55,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:09:55,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:09:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:09:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:09:55,320 INFO L87 Difference]: Start difference. First operand 755 states and 862 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:09:57,884 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 13:10:05,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:10:05,086 INFO L93 Difference]: Finished difference Result 968 states and 1090 transitions. [2021-11-02 13:10:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 13:10:05,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 13:10:05,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:10:05,088 INFO L225 Difference]: With dead ends: 968 [2021-11-02 13:10:05,088 INFO L226 Difference]: Without dead ends: 966 [2021-11-02 13:10:05,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2060.54ms TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2021-11-02 13:10:05,089 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1553 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7549.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.64ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8005.47ms IncrementalHoareTripleChecker+Time [2021-11-02 13:10:05,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 0 Invalid, 2043 Unknown, 0 Unchecked, 16.64ms Time], IncrementalHoareTripleChecker [67 Valid, 1975 Invalid, 1 Unknown, 0 Unchecked, 8005.47ms Time] [2021-11-02 13:10:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-02 13:10:05,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 776. [2021-11-02 13:10:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 763 states have (on average 1.163826998689384) internal successors, (888), 775 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 13:10:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 888 transitions. [2021-11-02 13:10:05,112 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 888 transitions. Word has length 96 [2021-11-02 13:10:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:10:05,112 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 888 transitions. [2021-11-02 13:10:05,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:10:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 888 transitions. [2021-11-02 13:10:05,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:10:05,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:10:05,113 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] [2021-11-02 13:10:05,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 13:10:05,113 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:10:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:10:05,114 INFO L85 PathProgramCache]: Analyzing trace with hash 313191414, now seen corresponding path program 1 times [2021-11-02 13:10:05,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:10:05,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405867474] [2021-11-02 13:10:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:10:05,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:10:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:10:06,107 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 13:10:06,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:10:06,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405867474] [2021-11-02 13:10:06,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405867474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:10:06,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:10:06,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 13:10:06,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043556009] [2021-11-02 13:10:06,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 13:10:06,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:10:06,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 13:10:06,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:10:06,108 INFO L87 Difference]: Start difference. First operand 776 states and 888 transitions. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:10:08,615 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 13:10:20,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:10:20,441 INFO L93 Difference]: Finished difference Result 1530 states and 1737 transitions. [2021-11-02 13:10:20,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 13:10:20,442 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 13:10:20,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:10:20,444 INFO L225 Difference]: With dead ends: 1530 [2021-11-02 13:10:20,444 INFO L226 Difference]: Without dead ends: 1299 [2021-11-02 13:10:20,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2621.00ms TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 13:10:20,445 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1687 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 2998 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11384.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.28ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2998 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12032.04ms IncrementalHoareTripleChecker+Time [2021-11-02 13:10:20,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 0 Invalid, 3084 Unknown, 0 Unchecked, 34.28ms Time], IncrementalHoareTripleChecker [85 Valid, 2998 Invalid, 1 Unknown, 0 Unchecked, 12032.04ms Time] [2021-11-02 13:10:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2021-11-02 13:10:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 911. [2021-11-02 13:10:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 898 states have (on average 1.170378619153675) internal successors, (1051), 910 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states 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 13:10:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1051 transitions. [2021-11-02 13:10:20,475 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1051 transitions. Word has length 96 [2021-11-02 13:10:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:10:20,476 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1051 transitions. [2021-11-02 13:10:20,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:10:20,476 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1051 transitions. [2021-11-02 13:10:20,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:10:20,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:10:20,477 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] [2021-11-02 13:10:20,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 13:10:20,477 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:10:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:10:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1686002742, now seen corresponding path program 1 times [2021-11-02 13:10:20,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:10:20,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064207537] [2021-11-02 13:10:20,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:10:20,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:10:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:10:22,257 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 13:10:22,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:10:22,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064207537] [2021-11-02 13:10:22,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064207537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:10:22,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:10:22,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 13:10:22,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447852054] [2021-11-02 13:10:22,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 13:10:22,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:10:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 13:10:22,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:10:22,259 INFO L87 Difference]: Start difference. First operand 911 states and 1051 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:10:25,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:10:50,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:10:50,988 INFO L93 Difference]: Finished difference Result 2033 states and 2272 transitions. [2021-11-02 13:10:50,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-02 13:10:50,989 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 13:10:50,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:10:50,991 INFO L225 Difference]: With dead ends: 2033 [2021-11-02 13:10:50,991 INFO L226 Difference]: Without dead ends: 1818 [2021-11-02 13:10:50,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 9815.29ms TimeCoverageRelationStatistics Valid=1278, Invalid=4124, Unknown=0, NotChecked=0, Total=5402 [2021-11-02 13:10:50,993 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4994 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 5100 mSolverCounterSat, 142 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18578.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.30ms SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 5100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19620.72ms IncrementalHoareTripleChecker+Time [2021-11-02 13:10:50,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 0 Invalid, 5243 Unknown, 0 Unchecked, 65.30ms Time], IncrementalHoareTripleChecker [142 Valid, 5100 Invalid, 1 Unknown, 0 Unchecked, 19620.72ms Time] [2021-11-02 13:10:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2021-11-02 13:10:51,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1063. [2021-11-02 13:10:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1050 states have (on average 1.1657142857142857) internal successors, (1224), 1062 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 13:10:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1224 transitions. [2021-11-02 13:10:51,033 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1224 transitions. Word has length 96 [2021-11-02 13:10:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:10:51,033 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 1224 transitions. [2021-11-02 13:10:51,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:10:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1224 transitions. [2021-11-02 13:10:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:10:51,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:10:51,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:51,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 13:10:51,035 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:10:51,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:10:51,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1551989236, now seen corresponding path program 1 times [2021-11-02 13:10:51,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:10:51,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010785589] [2021-11-02 13:10:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:10:51,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:10:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:10:52,518 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 13:10:52,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:10:52,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010785589] [2021-11-02 13:10:52,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010785589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:10:52,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:10:52,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:10:52,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137031388] [2021-11-02 13:10:52,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:10:52,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:10:52,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:10:52,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:10:52,519 INFO L87 Difference]: Start difference. First operand 1063 states and 1224 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:10:54,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:11:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:11:02,635 INFO L93 Difference]: Finished difference Result 1476 states and 1675 transitions. [2021-11-02 13:11:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 13:11:02,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 13:11:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:11:02,638 INFO L225 Difference]: With dead ends: 1476 [2021-11-02 13:11:02,638 INFO L226 Difference]: Without dead ends: 1302 [2021-11-02 13:11:02,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2024.19ms TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2021-11-02 13:11:02,639 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2216 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 68 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8134.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.13ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8643.06ms IncrementalHoareTripleChecker+Time [2021-11-02 13:11:02,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 0 Invalid, 2283 Unknown, 0 Unchecked, 23.13ms Time], IncrementalHoareTripleChecker [68 Valid, 2214 Invalid, 1 Unknown, 0 Unchecked, 8643.06ms Time] [2021-11-02 13:11:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-11-02 13:11:02,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1002. [2021-11-02 13:11:02,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 989 states have (on average 1.166835187057634) internal successors, (1154), 1001 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states 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 13:11:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1154 transitions. [2021-11-02 13:11:02,672 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1154 transitions. Word has length 96 [2021-11-02 13:11:02,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:11:02,672 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1154 transitions. [2021-11-02 13:11:02,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:11:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1154 transitions. [2021-11-02 13:11:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 13:11:02,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:11:02,673 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] [2021-11-02 13:11:02,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 13:11:02,673 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:11:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:11:02,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2141825290, now seen corresponding path program 1 times [2021-11-02 13:11:02,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:11:02,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971766083] [2021-11-02 13:11:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:11:02,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:11:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:11:05,749 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 13:11:05,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:11:05,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971766083] [2021-11-02 13:11:05,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971766083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:11:05,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:11:05,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 13:11:05,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131661894] [2021-11-02 13:11:05,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 13:11:05,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:11:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 13:11:05,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:11:05,751 INFO L87 Difference]: Start difference. First operand 1002 states and 1154 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:11:07,919 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 13:11:14,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:11:14,615 INFO L93 Difference]: Finished difference Result 1203 states and 1392 transitions. [2021-11-02 13:11:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 13:11:14,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-02 13:11:14,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:11:14,617 INFO L225 Difference]: With dead ends: 1203 [2021-11-02 13:11:14,617 INFO L226 Difference]: Without dead ends: 875 [2021-11-02 13:11:14,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 3419.16ms TimeCoverageRelationStatistics Valid=226, Invalid=530, Unknown=0, NotChecked=0, Total=756 [2021-11-02 13:11:14,619 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1450 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 71 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5904.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.81ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6241.36ms IncrementalHoareTripleChecker+Time [2021-11-02 13:11:14,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 0 Invalid, 1165 Unknown, 0 Unchecked, 15.81ms Time], IncrementalHoareTripleChecker [71 Valid, 1093 Invalid, 1 Unknown, 0 Unchecked, 6241.36ms Time] [2021-11-02 13:11:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-02 13:11:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 512. [2021-11-02 13:11:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 499 states have (on average 1.1462925851703407) internal successors, (572), 511 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 13:11:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 572 transitions. [2021-11-02 13:11:14,647 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 572 transitions. Word has length 96 [2021-11-02 13:11:14,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:11:14,648 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 572 transitions. [2021-11-02 13:11:14,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 13:11:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 572 transitions. [2021-11-02 13:11:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 13:11:14,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:11:14,649 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] [2021-11-02 13:11:14,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 13:11:14,649 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:11:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:11:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash -360208250, now seen corresponding path program 1 times [2021-11-02 13:11:14,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:11:14,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167334657] [2021-11-02 13:11:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:11:14,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:11:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:11:15,247 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 13:11:15,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:11:15,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167334657] [2021-11-02 13:11:15,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167334657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:11:15,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:11:15,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:11:15,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934218988] [2021-11-02 13:11:15,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:11:15,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:11:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:11:15,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:11:15,250 INFO L87 Difference]: Start difference. First operand 512 states and 572 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 13:11:18,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:11:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:11:28,957 INFO L93 Difference]: Finished difference Result 1382 states and 1546 transitions. [2021-11-02 13:11:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 13:11:28,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 13:11:28,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:11:28,960 INFO L225 Difference]: With dead ends: 1382 [2021-11-02 13:11:28,960 INFO L226 Difference]: Without dead ends: 1277 [2021-11-02 13:11:28,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1581.96ms TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2021-11-02 13:11:28,961 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1915 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11530.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.94ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12192.74ms IncrementalHoareTripleChecker+Time [2021-11-02 13:11:28,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 0 Invalid, 2418 Unknown, 0 Unchecked, 27.94ms Time], IncrementalHoareTripleChecker [32 Valid, 2385 Invalid, 1 Unknown, 0 Unchecked, 12192.74ms Time] [2021-11-02 13:11:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-11-02 13:11:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 512. [2021-11-02 13:11:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 499 states have (on average 1.1442885771543085) internal successors, (571), 511 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 13:11:28,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 571 transitions. [2021-11-02 13:11:28,988 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 571 transitions. Word has length 98 [2021-11-02 13:11:28,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:11:28,989 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 571 transitions. [2021-11-02 13:11:28,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 13:11:28,989 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 571 transitions. [2021-11-02 13:11:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 13:11:28,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:11:28,990 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] [2021-11-02 13:11:28,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 13:11:28,990 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:11:28,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:11:28,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1621610358, now seen corresponding path program 1 times [2021-11-02 13:11:28,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:11:28,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084175085] [2021-11-02 13:11:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:11:28,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:11:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:11:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:11:32,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:11:32,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084175085] [2021-11-02 13:11:32,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084175085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:11:32,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:11:32,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 13:11:32,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345248177] [2021-11-02 13:11:32,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 13:11:32,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:11:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 13:11:32,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:11:32,253 INFO L87 Difference]: Start difference. First operand 512 states and 571 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 13:11:34,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:11:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:11:43,427 INFO L93 Difference]: Finished difference Result 971 states and 1089 transitions. [2021-11-02 13:11:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 13:11:43,427 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 13:11:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:11:43,429 INFO L225 Difference]: With dead ends: 971 [2021-11-02 13:11:43,429 INFO L226 Difference]: Without dead ends: 805 [2021-11-02 13:11:43,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1326.49ms TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2021-11-02 13:11:43,429 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 876 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9641.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.18ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10229.22ms IncrementalHoareTripleChecker+Time [2021-11-02 13:11:43,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 0 Invalid, 2345 Unknown, 0 Unchecked, 24.18ms Time], IncrementalHoareTripleChecker [27 Valid, 2317 Invalid, 1 Unknown, 0 Unchecked, 10229.22ms Time] [2021-11-02 13:11:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-11-02 13:11:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 697. [2021-11-02 13:11:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 684 states have (on average 1.1476608187134503) internal successors, (785), 696 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:11:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 785 transitions. [2021-11-02 13:11:43,458 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 785 transitions. Word has length 98 [2021-11-02 13:11:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:11:43,458 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 785 transitions. [2021-11-02 13:11:43,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 13:11:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 785 transitions. [2021-11-02 13:11:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 13:11:43,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:11:43,459 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] [2021-11-02 13:11:43,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 13:11:43,459 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:11:43,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:11:43,460 INFO L85 PathProgramCache]: Analyzing trace with hash -941551988, now seen corresponding path program 1 times [2021-11-02 13:11:43,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:11:43,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7199112] [2021-11-02 13:11:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:11:43,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:11:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:11:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:11:46,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:11:46,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7199112] [2021-11-02 13:11:46,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7199112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:11:46,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:11:46,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:11:46,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348214792] [2021-11-02 13:11:46,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:11:46,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:11:46,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:11:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:11:46,225 INFO L87 Difference]: Start difference. First operand 697 states and 785 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 13:11:48,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:11:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:11:54,936 INFO L93 Difference]: Finished difference Result 954 states and 1064 transitions. [2021-11-02 13:11:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:11:54,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-02 13:11:54,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:11:54,938 INFO L225 Difference]: With dead ends: 954 [2021-11-02 13:11:54,938 INFO L226 Difference]: Without dead ends: 780 [2021-11-02 13:11:54,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 548.16ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:11:54,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 713 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7876.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.30ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8342.45ms IncrementalHoareTripleChecker+Time [2021-11-02 13:11:54,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 0 Invalid, 1705 Unknown, 0 Unchecked, 18.30ms Time], IncrementalHoareTripleChecker [29 Valid, 1675 Invalid, 1 Unknown, 0 Unchecked, 8342.45ms Time] [2021-11-02 13:11:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-11-02 13:11:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 689. [2021-11-02 13:11:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 676 states have (on average 1.1405325443786982) internal successors, (771), 688 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 13:11:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 771 transitions. [2021-11-02 13:11:54,977 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 771 transitions. Word has length 98 [2021-11-02 13:11:54,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:11:54,977 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 771 transitions. [2021-11-02 13:11:54,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 13:11:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 771 transitions. [2021-11-02 13:11:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 13:11:54,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:11:54,978 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 13:11:54,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-02 13:11:54,978 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:11:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:11:54,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1240016283, now seen corresponding path program 1 times [2021-11-02 13:11:54,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:11:54,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786769811] [2021-11-02 13:11:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:11:54,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:11:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:11:57,889 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 13:11:57,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:11:57,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786769811] [2021-11-02 13:11:57,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786769811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:11:57,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:11:57,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:11:57,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952112679] [2021-11-02 13:11:57,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:11:57,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:11:57,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:11:57,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:11:57,890 INFO L87 Difference]: Start difference. First operand 689 states and 771 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:01,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:12:05,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:05,714 INFO L93 Difference]: Finished difference Result 1239 states and 1392 transitions. [2021-11-02 13:12:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:12:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-02 13:12:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:05,715 INFO L225 Difference]: With dead ends: 1239 [2021-11-02 13:12:05,715 INFO L226 Difference]: Without dead ends: 705 [2021-11-02 13:12:05,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 623.47ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:12:05,716 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 541 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7076.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.26ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7470.21ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:05,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 0 Invalid, 1447 Unknown, 0 Unchecked, 12.26ms Time], IncrementalHoareTripleChecker [4 Valid, 1442 Invalid, 1 Unknown, 0 Unchecked, 7470.21ms Time] [2021-11-02 13:12:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-11-02 13:12:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 693. [2021-11-02 13:12:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 680 states have (on average 1.1397058823529411) internal successors, (775), 692 states have internal predecessors, (775), 0 states have call successors, (0), 0 states 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 13:12:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 775 transitions. [2021-11-02 13:12:05,742 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 775 transitions. Word has length 99 [2021-11-02 13:12:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:05,742 INFO L470 AbstractCegarLoop]: Abstraction has 693 states and 775 transitions. [2021-11-02 13:12:05,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 775 transitions. [2021-11-02 13:12:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 13:12:05,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:05,743 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, 1] [2021-11-02 13:12:05,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-02 13:12:05,743 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:12:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:05,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1013325187, now seen corresponding path program 1 times [2021-11-02 13:12:05,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:05,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075730331] [2021-11-02 13:12:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:05,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:09,550 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 13:12:09,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:09,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075730331] [2021-11-02 13:12:09,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075730331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:09,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:09,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 13:12:09,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266846298] [2021-11-02 13:12:09,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 13:12:09,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:09,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 13:12:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:12:09,553 INFO L87 Difference]: Start difference. First operand 693 states and 775 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 13:12:12,147 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 13:12:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:33,799 INFO L93 Difference]: Finished difference Result 1301 states and 1461 transitions. [2021-11-02 13:12:33,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-02 13:12:33,799 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-02 13:12:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:33,801 INFO L225 Difference]: With dead ends: 1301 [2021-11-02 13:12:33,801 INFO L226 Difference]: Without dead ends: 1297 [2021-11-02 13:12:33,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 6188.52ms TimeCoverageRelationStatistics Valid=631, Invalid=2561, Unknown=0, NotChecked=0, Total=3192 [2021-11-02 13:12:33,802 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1766 mSDsluCounter, 3434 mSDsCounter, 0 mSdLazyCounter, 5114 mSolverCounterSat, 225 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17815.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.07ms SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 5114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18810.14ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:33,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 0 Invalid, 5340 Unknown, 0 Unchecked, 56.07ms Time], IncrementalHoareTripleChecker [225 Valid, 5114 Invalid, 1 Unknown, 0 Unchecked, 18810.14ms Time] [2021-11-02 13:12:33,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-02 13:12:33,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 845. [2021-11-02 13:12:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 832 states have (on average 1.1370192307692308) internal successors, (946), 844 states have internal predecessors, (946), 0 states have call successors, (0), 0 states 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 13:12:33,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 946 transitions. [2021-11-02 13:12:33,841 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 946 transitions. Word has length 100 [2021-11-02 13:12:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:33,841 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 946 transitions. [2021-11-02 13:12:33,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 13:12:33,842 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 946 transitions. [2021-11-02 13:12:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-02 13:12:33,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:33,842 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, 1, 1] [2021-11-02 13:12:33,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-02 13:12:33,843 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:12:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:33,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1685644114, now seen corresponding path program 1 times [2021-11-02 13:12:33,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:33,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90459883] [2021-11-02 13:12:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:33,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:34,211 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 13:12:34,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:34,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90459883] [2021-11-02 13:12:34,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90459883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:34,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:34,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:12:34,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990180293] [2021-11-02 13:12:34,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:12:34,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:12:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:12:34,212 INFO L87 Difference]: Start difference. First operand 845 states and 946 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:36,258 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 13:12:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:41,657 INFO L93 Difference]: Finished difference Result 1153 states and 1269 transitions. [2021-11-02 13:12:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:12:41,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-02 13:12:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:41,658 INFO L225 Difference]: With dead ends: 1153 [2021-11-02 13:12:41,658 INFO L226 Difference]: Without dead ends: 943 [2021-11-02 13:12:41,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 576.80ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:12:41,659 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 861 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6616.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.00ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6926.63ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:41,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 0 Invalid, 1678 Unknown, 0 Unchecked, 15.00ms Time], IncrementalHoareTripleChecker [31 Valid, 1646 Invalid, 1 Unknown, 0 Unchecked, 6926.63ms Time] [2021-11-02 13:12:41,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-11-02 13:12:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 834. [2021-11-02 13:12:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 821 states have (on average 1.1315468940316686) internal successors, (929), 833 states have internal predecessors, (929), 0 states have call successors, (0), 0 states 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 13:12:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 929 transitions. [2021-11-02 13:12:41,696 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 929 transitions. Word has length 101 [2021-11-02 13:12:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:41,696 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 929 transitions. [2021-11-02 13:12:41,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:41,696 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 929 transitions. [2021-11-02 13:12:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-02 13:12:41,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:41,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:41,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-02 13:12:41,697 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:12:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:41,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1714104196, now seen corresponding path program 1 times [2021-11-02 13:12:41,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:41,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252644005] [2021-11-02 13:12:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:41,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:42,140 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 13:12:42,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:42,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252644005] [2021-11-02 13:12:42,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252644005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:42,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:42,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:12:42,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437537910] [2021-11-02 13:12:42,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:12:42,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:42,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:12:42,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:12:42,142 INFO L87 Difference]: Start difference. First operand 834 states and 929 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:45,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:12:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:53,312 INFO L93 Difference]: Finished difference Result 2374 states and 2682 transitions. [2021-11-02 13:12:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 13:12:53,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-02 13:12:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:53,323 INFO L225 Difference]: With dead ends: 2374 [2021-11-02 13:12:53,323 INFO L226 Difference]: Without dead ends: 2199 [2021-11-02 13:12:53,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1158.28ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-11-02 13:12:53,324 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1387 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9381.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.19ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9978.43ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:53,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 0 Invalid, 1859 Unknown, 0 Unchecked, 22.19ms Time], IncrementalHoareTripleChecker [35 Valid, 1823 Invalid, 1 Unknown, 0 Unchecked, 9978.43ms Time] [2021-11-02 13:12:53,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-02 13:12:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 856. [2021-11-02 13:12:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 843 states have (on average 1.1281138790035588) internal successors, (951), 855 states have internal predecessors, (951), 0 states have call successors, (0), 0 states 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 13:12:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 951 transitions. [2021-11-02 13:12:53,372 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 951 transitions. Word has length 101 [2021-11-02 13:12:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:53,372 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 951 transitions. [2021-11-02 13:12:53,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 951 transitions. [2021-11-02 13:12:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-02 13:12:53,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:53,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:53,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-02 13:12:53,374 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:12:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1736857598, now seen corresponding path program 1 times [2021-11-02 13:12:53,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:53,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498584955] [2021-11-02 13:12:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:53,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:57,203 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 13:12:57,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:57,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498584955] [2021-11-02 13:12:57,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498584955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:57,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:57,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 13:12:57,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931310917] [2021-11-02 13:12:57,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 13:12:57,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 13:12:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:12:57,204 INFO L87 Difference]: Start difference. First operand 856 states and 951 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:00,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:05,453 INFO L93 Difference]: Finished difference Result 988 states and 1099 transitions. [2021-11-02 13:13:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 13:13:05,453 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-02 13:13:05,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:05,454 INFO L225 Difference]: With dead ends: 988 [2021-11-02 13:13:05,455 INFO L226 Difference]: Without dead ends: 862 [2021-11-02 13:13:05,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1221.10ms TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-11-02 13:13:05,455 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 826 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6913.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.43ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7389.15ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:05,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 13.43ms Time], IncrementalHoareTripleChecker [17 Valid, 1164 Invalid, 1 Unknown, 0 Unchecked, 7389.15ms Time] [2021-11-02 13:13:05,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-11-02 13:13:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 856. [2021-11-02 13:13:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 843 states have (on average 1.1257413997627521) internal successors, (949), 855 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 13:13:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 949 transitions. [2021-11-02 13:13:05,494 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 949 transitions. Word has length 101 [2021-11-02 13:13:05,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:05,494 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 949 transitions. [2021-11-02 13:13:05,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 949 transitions. [2021-11-02 13:13:05,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-02 13:13:05,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:05,495 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, 1, 1] [2021-11-02 13:13:05,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-02 13:13:05,495 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:13:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1878051328, now seen corresponding path program 1 times [2021-11-02 13:13:05,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:05,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214916107] [2021-11-02 13:13:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:05,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:10,099 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 13:13:10,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:10,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214916107] [2021-11-02 13:13:10,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214916107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:10,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:10,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:13:10,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264064317] [2021-11-02 13:13:10,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:13:10,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:10,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:13:10,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:13:10,100 INFO L87 Difference]: Start difference. First operand 856 states and 949 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:13,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:17,915 INFO L93 Difference]: Finished difference Result 982 states and 1091 transitions. [2021-11-02 13:13:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:13:17,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-02 13:13:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:17,917 INFO L225 Difference]: With dead ends: 982 [2021-11-02 13:13:17,917 INFO L226 Difference]: Without dead ends: 852 [2021-11-02 13:13:17,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 706.32ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:13:17,919 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 534 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6933.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.08ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7378.93ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:17,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 0 Invalid, 930 Unknown, 0 Unchecked, 10.08ms Time], IncrementalHoareTripleChecker [15 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 7378.93ms Time] [2021-11-02 13:13:17,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-02 13:13:17,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2021-11-02 13:13:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 839 states have (on average 1.1239570917759236) internal successors, (943), 851 states have internal predecessors, (943), 0 states have call successors, (0), 0 states 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 13:13:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 943 transitions. [2021-11-02 13:13:17,973 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 943 transitions. Word has length 101 [2021-11-02 13:13:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:17,973 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 943 transitions. [2021-11-02 13:13:17,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 943 transitions. [2021-11-02 13:13:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 13:13:17,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:17,975 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, 1, 1, 1] [2021-11-02 13:13:17,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-02 13:13:17,975 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:13:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1897049402, now seen corresponding path program 1 times [2021-11-02 13:13:17,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:17,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248776633] [2021-11-02 13:13:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:17,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:21,807 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 13:13:21,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:21,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248776633] [2021-11-02 13:13:21,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248776633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:21,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:21,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:13:21,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431246161] [2021-11-02 13:13:21,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:13:21,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:13:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:13:21,808 INFO L87 Difference]: Start difference. First operand 852 states and 943 transitions. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:25,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:35,248 INFO L93 Difference]: Finished difference Result 1294 states and 1414 transitions. [2021-11-02 13:13:35,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 13:13:35,248 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-02 13:13:35,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:35,250 INFO L225 Difference]: With dead ends: 1294 [2021-11-02 13:13:35,250 INFO L226 Difference]: Without dead ends: 1119 [2021-11-02 13:13:35,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2004.98ms TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2021-11-02 13:13:35,252 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1224 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11293.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.84ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11953.46ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:35,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 0 Invalid, 2778 Unknown, 0 Unchecked, 27.84ms Time], IncrementalHoareTripleChecker [32 Valid, 2745 Invalid, 1 Unknown, 0 Unchecked, 11953.46ms Time] [2021-11-02 13:13:35,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-02 13:13:35,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 852. [2021-11-02 13:13:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 839 states have (on average 1.1191895113230035) internal successors, (939), 851 states have internal predecessors, (939), 0 states have call successors, (0), 0 states 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 13:13:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 939 transitions. [2021-11-02 13:13:35,293 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 939 transitions. Word has length 102 [2021-11-02 13:13:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:35,293 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 939 transitions. [2021-11-02 13:13:35,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 939 transitions. [2021-11-02 13:13:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 13:13:35,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:35,294 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, 1, 1, 1, 1] [2021-11-02 13:13:35,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-02 13:13:35,295 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:13:35,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:35,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1314375689, now seen corresponding path program 1 times [2021-11-02 13:13:35,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:35,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865552750] [2021-11-02 13:13:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:35,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:38,737 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 13:13:38,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:38,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865552750] [2021-11-02 13:13:38,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865552750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:38,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:38,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 13:13:38,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186982912] [2021-11-02 13:13:38,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 13:13:38,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 13:13:38,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 13:13:38,739 INFO L87 Difference]: Start difference. First operand 852 states and 939 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 13:13:40,796 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 13:14:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:10,685 INFO L93 Difference]: Finished difference Result 1586 states and 1734 transitions. [2021-11-02 13:14:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-02 13:14:10,686 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-02 13:14:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:10,688 INFO L225 Difference]: With dead ends: 1586 [2021-11-02 13:14:10,688 INFO L226 Difference]: Without dead ends: 1582 [2021-11-02 13:14:10,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 11331.59ms TimeCoverageRelationStatistics Valid=691, Invalid=2171, Unknown=0, NotChecked=0, Total=2862 [2021-11-02 13:14:10,689 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2896 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 5650 mSolverCounterSat, 208 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19950.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.70ms SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 5650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21162.83ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:10,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 0 Invalid, 5859 Unknown, 0 Unchecked, 74.70ms Time], IncrementalHoareTripleChecker [208 Valid, 5650 Invalid, 1 Unknown, 0 Unchecked, 21162.83ms Time] [2021-11-02 13:14:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2021-11-02 13:14:10,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1045. [2021-11-02 13:14:10,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1032 states have (on average 1.124031007751938) internal successors, (1160), 1044 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 13:14:10,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1160 transitions. [2021-11-02 13:14:10,740 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1160 transitions. Word has length 103 [2021-11-02 13:14:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:10,741 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 1160 transitions. [2021-11-02 13:14:10,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 13:14:10,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1160 transitions. [2021-11-02 13:14:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-02 13:14:10,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:10,742 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, 1, 1, 1, 1, 1] [2021-11-02 13:14:10,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-02 13:14:10,742 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:14:10,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1093270472, now seen corresponding path program 1 times [2021-11-02 13:14:10,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:10,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045067443] [2021-11-02 13:14:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:10,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:14:11,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:11,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045067443] [2021-11-02 13:14:11,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045067443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:11,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:11,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:14:11,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745978289] [2021-11-02 13:14:11,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:14:11,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:11,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:14:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:14:11,029 INFO L87 Difference]: Start difference. First operand 1045 states and 1160 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:13,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:17,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:17,514 INFO L93 Difference]: Finished difference Result 1785 states and 1993 transitions. [2021-11-02 13:14:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:14:17,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-02 13:14:17,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:17,516 INFO L225 Difference]: With dead ends: 1785 [2021-11-02 13:14:17,516 INFO L226 Difference]: Without dead ends: 1504 [2021-11-02 13:14:17,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 189.81ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:14:17,517 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 268 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5928.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.48ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6241.18ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:17,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 0 Invalid, 1198 Unknown, 0 Unchecked, 7.48ms Time], IncrementalHoareTripleChecker [3 Valid, 1194 Invalid, 1 Unknown, 0 Unchecked, 6241.18ms Time] [2021-11-02 13:14:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-11-02 13:14:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1313. [2021-11-02 13:14:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1300 states have (on average 1.1123076923076922) internal successors, (1446), 1312 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1446 transitions. [2021-11-02 13:14:17,615 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1446 transitions. Word has length 104 [2021-11-02 13:14:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:17,615 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 1446 transitions. [2021-11-02 13:14:17,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1446 transitions. [2021-11-02 13:14:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-02 13:14:17,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:17,617 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, 1, 1, 1, 1, 1] [2021-11-02 13:14:17,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-02 13:14:17,617 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:14:17,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:17,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1690592961, now seen corresponding path program 1 times [2021-11-02 13:14:17,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:17,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50196967] [2021-11-02 13:14:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:17,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:18,268 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 13:14:18,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:18,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50196967] [2021-11-02 13:14:18,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50196967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:18,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:18,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 13:14:18,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580479938] [2021-11-02 13:14:18,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:14:18,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:14:18,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:14:18,270 INFO L87 Difference]: Start difference. First operand 1313 states and 1446 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:20,311 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 13:14:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:27,795 INFO L93 Difference]: Finished difference Result 1858 states and 2051 transitions. [2021-11-02 13:14:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 13:14:27,796 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-02 13:14:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:27,798 INFO L225 Difference]: With dead ends: 1858 [2021-11-02 13:14:27,798 INFO L226 Difference]: Without dead ends: 1854 [2021-11-02 13:14:27,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 835.26ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-02 13:14:27,799 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 718 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 94 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8400.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.45ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8799.14ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:27,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 0 Invalid, 2911 Unknown, 0 Unchecked, 19.45ms Time], IncrementalHoareTripleChecker [94 Valid, 2816 Invalid, 1 Unknown, 0 Unchecked, 8799.14ms Time] [2021-11-02 13:14:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-11-02 13:14:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1295. [2021-11-02 13:14:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1282 states have (on average 1.109204368174727) internal successors, (1422), 1294 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states 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 13:14:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1422 transitions. [2021-11-02 13:14:27,892 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1422 transitions. Word has length 104 [2021-11-02 13:14:27,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:27,892 INFO L470 AbstractCegarLoop]: Abstraction has 1295 states and 1422 transitions. [2021-11-02 13:14:27,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1422 transitions. [2021-11-02 13:14:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-02 13:14:27,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:27,894 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, 1, 1, 1, 1, 1, 1] [2021-11-02 13:14:27,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-02 13:14:27,894 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:14:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1667458833, now seen corresponding path program 1 times [2021-11-02 13:14:27,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:27,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296555391] [2021-11-02 13:14:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:27,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:28,287 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 13:14:28,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:28,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296555391] [2021-11-02 13:14:28,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296555391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:28,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:28,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:14:28,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97155111] [2021-11-02 13:14:28,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:14:28,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:28,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:14:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:14:28,289 INFO L87 Difference]: Start difference. First operand 1295 states and 1422 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:30,342 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 13:14:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:40,562 INFO L93 Difference]: Finished difference Result 1954 states and 2129 transitions. [2021-11-02 13:14:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 13:14:40,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-02 13:14:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:40,565 INFO L225 Difference]: With dead ends: 1954 [2021-11-02 13:14:40,565 INFO L226 Difference]: Without dead ends: 1733 [2021-11-02 13:14:40,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1336.49ms TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-02 13:14:40,566 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 858 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 2993 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10306.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.87ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2993 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10882.09ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:40,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 0 Invalid, 3009 Unknown, 0 Unchecked, 25.87ms Time], IncrementalHoareTripleChecker [15 Valid, 2993 Invalid, 1 Unknown, 0 Unchecked, 10882.09ms Time] [2021-11-02 13:14:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2021-11-02 13:14:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1206. [2021-11-02 13:14:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1193 states have (on average 1.1031014249790445) internal successors, (1316), 1205 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states 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 13:14:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1316 transitions. [2021-11-02 13:14:40,663 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1316 transitions. Word has length 105 [2021-11-02 13:14:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:40,663 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1316 transitions. [2021-11-02 13:14:40,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1316 transitions. [2021-11-02 13:14:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-02 13:14:40,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:40,665 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, 1, 1, 1, 1, 1, 1] [2021-11-02 13:14:40,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-02 13:14:40,665 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:14:40,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash 195340878, now seen corresponding path program 1 times [2021-11-02 13:14:40,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:40,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802309749] [2021-11-02 13:14:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:40,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:46,570 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 13:14:46,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:46,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802309749] [2021-11-02 13:14:46,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802309749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:46,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:46,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 13:14:46,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224690176] [2021-11-02 13:14:46,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 13:14:46,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:46,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 13:14:46,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:14:46,571 INFO L87 Difference]: Start difference. First operand 1206 states and 1316 transitions. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:48,628 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 13:15:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:02,420 INFO L93 Difference]: Finished difference Result 1466 states and 1584 transitions. [2021-11-02 13:15:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 13:15:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-02 13:15:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:02,422 INFO L225 Difference]: With dead ends: 1466 [2021-11-02 13:15:02,422 INFO L226 Difference]: Without dead ends: 1305 [2021-11-02 13:15:02,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3836.56ms TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 13:15:02,423 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1932 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12424.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.29ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13054.34ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:02,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1932 Valid, 0 Invalid, 3884 Unknown, 0 Unchecked, 44.29ms Time], IncrementalHoareTripleChecker [69 Valid, 3814 Invalid, 1 Unknown, 0 Unchecked, 13054.34ms Time] [2021-11-02 13:15:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-11-02 13:15:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1191. [2021-11-02 13:15:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1178 states have (on average 1.099320882852292) internal successors, (1295), 1190 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 13:15:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1295 transitions. [2021-11-02 13:15:02,490 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1295 transitions. Word has length 105 [2021-11-02 13:15:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:02,490 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1295 transitions. [2021-11-02 13:15:02,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1295 transitions. [2021-11-02 13:15:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-02 13:15:02,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:02,492 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, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:02,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-02 13:15:02,492 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:15:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash -251014884, now seen corresponding path program 1 times [2021-11-02 13:15:02,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:02,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854324170] [2021-11-02 13:15:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:02,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:15:03,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:03,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854324170] [2021-11-02 13:15:03,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854324170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:03,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:03,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 13:15:03,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986734895] [2021-11-02 13:15:03,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 13:15:03,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:03,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 13:15:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:15:03,620 INFO L87 Difference]: Start difference. First operand 1191 states and 1295 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:06,086 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 13:15:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:15,586 INFO L93 Difference]: Finished difference Result 2095 states and 2293 transitions. [2021-11-02 13:15:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 13:15:15,587 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-02 13:15:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:15,588 INFO L225 Difference]: With dead ends: 2095 [2021-11-02 13:15:15,588 INFO L226 Difference]: Without dead ends: 1529 [2021-11-02 13:15:15,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1880.81ms TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2021-11-02 13:15:15,589 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3123 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 161 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9869.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.39ms SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10462.25ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:15,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3123 Valid, 0 Invalid, 2646 Unknown, 0 Unchecked, 31.39ms Time], IncrementalHoareTripleChecker [161 Valid, 2484 Invalid, 1 Unknown, 0 Unchecked, 10462.25ms Time] [2021-11-02 13:15:15,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-11-02 13:15:15,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1349. [2021-11-02 13:15:15,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1336 states have (on average 1.098802395209581) internal successors, (1468), 1348 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states 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 13:15:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1468 transitions. [2021-11-02 13:15:15,671 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1468 transitions. Word has length 105 [2021-11-02 13:15:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:15,672 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 1468 transitions. [2021-11-02 13:15:15,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1468 transitions. [2021-11-02 13:15:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-02 13:15:15,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:15,673 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, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:15,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-02 13:15:15,673 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:15:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash -385028390, now seen corresponding path program 1 times [2021-11-02 13:15:15,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:15,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160886047] [2021-11-02 13:15:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:15,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:15:21,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:21,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160886047] [2021-11-02 13:15:21,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160886047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:21,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:21,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 13:15:21,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865124255] [2021-11-02 13:15:21,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 13:15:21,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:21,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 13:15:21,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:15:21,308 INFO L87 Difference]: Start difference. First operand 1349 states and 1468 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:24,072 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 13:15:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:31,400 INFO L93 Difference]: Finished difference Result 1676 states and 1808 transitions. [2021-11-02 13:15:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 13:15:31,401 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-02 13:15:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:31,402 INFO L225 Difference]: With dead ends: 1676 [2021-11-02 13:15:31,402 INFO L226 Difference]: Without dead ends: 969 [2021-11-02 13:15:31,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2295.35ms TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2021-11-02 13:15:31,403 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 831 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8219.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.78ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8715.43ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:31,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 0 Invalid, 1930 Unknown, 0 Unchecked, 19.78ms Time], IncrementalHoareTripleChecker [18 Valid, 1911 Invalid, 1 Unknown, 0 Unchecked, 8715.43ms Time] [2021-11-02 13:15:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-02 13:15:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 957. [2021-11-02 13:15:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 946 states have (on average 1.0930232558139534) internal successors, (1034), 956 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states 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 13:15:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1034 transitions. [2021-11-02 13:15:31,473 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1034 transitions. Word has length 105 [2021-11-02 13:15:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:31,473 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 1034 transitions. [2021-11-02 13:15:31,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1034 transitions. [2021-11-02 13:15:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 13:15:31,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:31,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:31,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-02 13:15:31,475 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:15:31,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:31,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1667609751, now seen corresponding path program 1 times [2021-11-02 13:15:31,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:31,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413920868] [2021-11-02 13:15:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:31,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:31,767 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 13:15:31,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:31,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413920868] [2021-11-02 13:15:31,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413920868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:31,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:31,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:15:31,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785094362] [2021-11-02 13:15:31,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:15:31,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:31,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:15:31,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:15:31,769 INFO L87 Difference]: Start difference. First operand 957 states and 1034 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 13:15:34,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:15:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:37,226 INFO L93 Difference]: Finished difference Result 1161 states and 1248 transitions. [2021-11-02 13:15:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:15:37,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-02 13:15:37,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:37,228 INFO L225 Difference]: With dead ends: 1161 [2021-11-02 13:15:37,228 INFO L226 Difference]: Without dead ends: 1006 [2021-11-02 13:15:37,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 224.09ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:15:37,229 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 506 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4893.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.15ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5224.20ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:37,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 0 Invalid, 774 Unknown, 0 Unchecked, 7.15ms Time], IncrementalHoareTripleChecker [12 Valid, 761 Invalid, 1 Unknown, 0 Unchecked, 5224.20ms Time] [2021-11-02 13:15:37,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-02 13:15:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 925. [2021-11-02 13:15:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 914 states have (on average 1.0787746170678336) internal successors, (986), 924 states have internal predecessors, (986), 0 states have call successors, (0), 0 states 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 13:15:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 986 transitions. [2021-11-02 13:15:37,284 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 986 transitions. Word has length 108 [2021-11-02 13:15:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:37,284 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 986 transitions. [2021-11-02 13:15:37,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 13:15:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 986 transitions. [2021-11-02 13:15:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 13:15:37,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:37,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:37,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-02 13:15:37,286 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:15:37,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:37,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1150084859, now seen corresponding path program 1 times [2021-11-02 13:15:37,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:37,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371451128] [2021-11-02 13:15:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:37,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:15:37,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:37,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371451128] [2021-11-02 13:15:37,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371451128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:37,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:37,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:15:37,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382748737] [2021-11-02 13:15:37,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:15:37,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:15:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:15:37,635 INFO L87 Difference]: Start difference. First operand 925 states and 986 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 13:15:39,687 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 13:15:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:48,196 INFO L93 Difference]: Finished difference Result 1790 states and 1928 transitions. [2021-11-02 13:15:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 13:15:48,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-02 13:15:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:48,198 INFO L225 Difference]: With dead ends: 1790 [2021-11-02 13:15:48,198 INFO L226 Difference]: Without dead ends: 1470 [2021-11-02 13:15:48,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1250.11ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-02 13:15:48,199 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 726 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8820.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.30ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9254.24ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:48,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 0 Invalid, 2553 Unknown, 0 Unchecked, 20.30ms Time], IncrementalHoareTripleChecker [16 Valid, 2536 Invalid, 1 Unknown, 0 Unchecked, 9254.24ms Time] [2021-11-02 13:15:48,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-02 13:15:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 875. [2021-11-02 13:15:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 864 states have (on average 1.0740740740740742) internal successors, (928), 874 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 13:15:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 928 transitions. [2021-11-02 13:15:48,248 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 928 transitions. Word has length 108 [2021-11-02 13:15:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:48,248 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 928 transitions. [2021-11-02 13:15:48,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 13:15:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 928 transitions. [2021-11-02 13:15:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-02 13:15:48,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:48,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:15:48,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-02 13:15:48,249 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:15:48,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:48,250 INFO L85 PathProgramCache]: Analyzing trace with hash 747265759, now seen corresponding path program 1 times [2021-11-02 13:15:48,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:48,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885279534] [2021-11-02 13:15:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:48,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:15:50,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:50,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885279534] [2021-11-02 13:15:50,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885279534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:15:50,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:15:50,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 13:15:50,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511683472] [2021-11-02 13:15:50,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 13:15:50,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:15:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 13:15:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:15:50,020 INFO L87 Difference]: Start difference. First operand 875 states and 928 transitions. Second operand has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:15:53,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:16:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:28,102 INFO L93 Difference]: Finished difference Result 1652 states and 1748 transitions. [2021-11-02 13:16:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 13:16:28,103 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-02 13:16:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:28,104 INFO L225 Difference]: With dead ends: 1652 [2021-11-02 13:16:28,104 INFO L226 Difference]: Without dead ends: 1541 [2021-11-02 13:16:28,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 8292.08ms TimeCoverageRelationStatistics Valid=966, Invalid=3324, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 13:16:28,105 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1559 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 7869 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28905.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.67ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 7869 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30414.95ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:28,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 0 Invalid, 7921 Unknown, 0 Unchecked, 89.67ms Time], IncrementalHoareTripleChecker [51 Valid, 7869 Invalid, 1 Unknown, 0 Unchecked, 30414.95ms Time] [2021-11-02 13:16:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-11-02 13:16:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 893. [2021-11-02 13:16:28,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 882 states have (on average 1.0736961451247165) internal successors, (947), 892 states have internal predecessors, (947), 0 states have call successors, (0), 0 states 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 13:16:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 947 transitions. [2021-11-02 13:16:28,158 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 947 transitions. Word has length 112 [2021-11-02 13:16:28,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:28,158 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 947 transitions. [2021-11-02 13:16:28,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:28,158 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 947 transitions. [2021-11-02 13:16:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-02 13:16:28,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:28,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:16:28,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-02 13:16:28,159 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:16:28,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:28,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1701205917, now seen corresponding path program 1 times [2021-11-02 13:16:28,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:28,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338356737] [2021-11-02 13:16:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:28,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:16:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:16:29,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:16:29,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338356737] [2021-11-02 13:16:29,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338356737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:16:29,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:16:29,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 13:16:29,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171606868] [2021-11-02 13:16:29,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 13:16:29,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:16:29,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 13:16:29,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-02 13:16:29,638 INFO L87 Difference]: Start difference. First operand 893 states and 947 transitions. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:32,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:16:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:38,722 INFO L93 Difference]: Finished difference Result 1040 states and 1100 transitions. [2021-11-02 13:16:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 13:16:38,722 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-02 13:16:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:38,723 INFO L225 Difference]: With dead ends: 1040 [2021-11-02 13:16:38,723 INFO L226 Difference]: Without dead ends: 778 [2021-11-02 13:16:38,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2379.12ms TimeCoverageRelationStatistics Valid=295, Invalid=697, Unknown=0, NotChecked=0, Total=992 [2021-11-02 13:16:38,724 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1922 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6887.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.88ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7338.28ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:38,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 0 Invalid, 1876 Unknown, 0 Unchecked, 17.88ms Time], IncrementalHoareTripleChecker [67 Valid, 1808 Invalid, 1 Unknown, 0 Unchecked, 7338.28ms Time] [2021-11-02 13:16:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-11-02 13:16:38,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 709. [2021-11-02 13:16:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 698 states have (on average 1.0744985673352436) internal successors, (750), 708 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 13:16:38,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 750 transitions. [2021-11-02 13:16:38,762 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 750 transitions. Word has length 112 [2021-11-02 13:16:38,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:38,762 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 750 transitions. [2021-11-02 13:16:38,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:38,762 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 750 transitions. [2021-11-02 13:16:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-02 13:16:38,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:38,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:16:38,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-02 13:16:38,763 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:16:38,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:38,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1088877202, now seen corresponding path program 1 times [2021-11-02 13:16:38,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:38,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561101673] [2021-11-02 13:16:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:38,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:16:39,096 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 13:16:39,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:16:39,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561101673] [2021-11-02 13:16:39,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561101673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:16:39,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:16:39,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:16:39,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944826438] [2021-11-02 13:16:39,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:16:39,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:16:39,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:16:39,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:16:39,097 INFO L87 Difference]: Start difference. First operand 709 states and 750 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:41,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:16:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:48,269 INFO L93 Difference]: Finished difference Result 988 states and 1050 transitions. [2021-11-02 13:16:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:16:48,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-02 13:16:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:48,270 INFO L225 Difference]: With dead ends: 988 [2021-11-02 13:16:48,270 INFO L226 Difference]: Without dead ends: 755 [2021-11-02 13:16:48,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 348.20ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:16:48,271 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 258 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8309.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.25ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8841.21ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:48,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 0 Invalid, 1845 Unknown, 0 Unchecked, 17.25ms Time], IncrementalHoareTripleChecker [10 Valid, 1834 Invalid, 1 Unknown, 0 Unchecked, 8841.21ms Time] [2021-11-02 13:16:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-11-02 13:16:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 709. [2021-11-02 13:16:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 698 states have (on average 1.0687679083094557) internal successors, (746), 708 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 13:16:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 746 transitions. [2021-11-02 13:16:48,328 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 746 transitions. Word has length 118 [2021-11-02 13:16:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:48,329 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 746 transitions. [2021-11-02 13:16:48,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 746 transitions. [2021-11-02 13:16:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-02 13:16:48,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:48,330 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, 1, 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 13:16:48,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-02 13:16:48,330 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:16:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2105526243, now seen corresponding path program 1 times [2021-11-02 13:16:48,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:48,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796712556] [2021-11-02 13:16:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:48,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:16:48,698 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 13:16:48,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:16:48,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796712556] [2021-11-02 13:16:48,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796712556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:16:48,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:16:48,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:16:48,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270040804] [2021-11-02 13:16:48,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:16:48,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:16:48,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:16:48,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:16:48,700 INFO L87 Difference]: Start difference. First operand 709 states and 746 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:50,749 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 13:16:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:16:55,833 INFO L93 Difference]: Finished difference Result 963 states and 1017 transitions. [2021-11-02 13:16:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:16:55,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-02 13:16:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:16:55,835 INFO L225 Difference]: With dead ends: 963 [2021-11-02 13:16:55,835 INFO L226 Difference]: Without dead ends: 855 [2021-11-02 13:16:55,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 403.82ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:16:55,836 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 472 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6399.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.27ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6771.32ms IncrementalHoareTripleChecker+Time [2021-11-02 13:16:55,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 0 Invalid, 1352 Unknown, 0 Unchecked, 13.27ms Time], IncrementalHoareTripleChecker [18 Valid, 1333 Invalid, 1 Unknown, 0 Unchecked, 6771.32ms Time] [2021-11-02 13:16:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-11-02 13:16:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 757. [2021-11-02 13:16:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 746 states have (on average 1.064343163538874) internal successors, (794), 756 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 13:16:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 794 transitions. [2021-11-02 13:16:55,890 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 794 transitions. Word has length 124 [2021-11-02 13:16:55,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:16:55,891 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 794 transitions. [2021-11-02 13:16:55,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:16:55,891 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 794 transitions. [2021-11-02 13:16:55,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-02 13:16:55,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:16:55,893 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, 1, 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 13:16:55,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-02 13:16:55,894 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:16:55,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:16:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1292047775, now seen corresponding path program 1 times [2021-11-02 13:16:55,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:16:55,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118057560] [2021-11-02 13:16:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:16:55,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:16:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:16:57,145 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 13:16:57,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:16:57,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118057560] [2021-11-02 13:16:57,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118057560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:16:57,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:16:57,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-02 13:16:57,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769748174] [2021-11-02 13:16:57,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:16:57,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:16:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:16:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:16:57,146 INFO L87 Difference]: Start difference. First operand 757 states and 794 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:00,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:17:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:17:10,314 INFO L93 Difference]: Finished difference Result 929 states and 971 transitions. [2021-11-02 13:17:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 13:17:10,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-02 13:17:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:17:10,316 INFO L225 Difference]: With dead ends: 929 [2021-11-02 13:17:10,316 INFO L226 Difference]: Without dead ends: 749 [2021-11-02 13:17:10,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1985.47ms TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-11-02 13:17:10,317 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1705 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 93 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10976.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.24ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11656.67ms IncrementalHoareTripleChecker+Time [2021-11-02 13:17:10,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1705 Valid, 0 Invalid, 2283 Unknown, 0 Unchecked, 29.24ms Time], IncrementalHoareTripleChecker [93 Valid, 2189 Invalid, 1 Unknown, 0 Unchecked, 11656.67ms Time] [2021-11-02 13:17:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-02 13:17:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 684. [2021-11-02 13:17:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 673 states have (on average 1.0609212481426449) internal successors, (714), 683 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 13:17:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 714 transitions. [2021-11-02 13:17:10,364 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 714 transitions. Word has length 124 [2021-11-02 13:17:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:17:10,364 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 714 transitions. [2021-11-02 13:17:10,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 714 transitions. [2021-11-02 13:17:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-02 13:17:10,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:17:10,366 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, 1, 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 13:17:10,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-02 13:17:10,366 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:17:10,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:17:10,366 INFO L85 PathProgramCache]: Analyzing trace with hash 149545309, now seen corresponding path program 1 times [2021-11-02 13:17:10,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:17:10,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448701317] [2021-11-02 13:17:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:17:10,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:17:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:17:18,147 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 13:17:18,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:17:18,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448701317] [2021-11-02 13:17:18,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448701317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:17:18,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:17:18,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-02 13:17:18,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389940271] [2021-11-02 13:17:18,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 13:17:18,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:17:18,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 13:17:18,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-11-02 13:17:18,149 INFO L87 Difference]: Start difference. First operand 684 states and 714 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:20,206 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 13:17:49,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:17:49,684 INFO L93 Difference]: Finished difference Result 853 states and 884 transitions. [2021-11-02 13:17:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-02 13:17:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-02 13:17:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:17:49,685 INFO L225 Difference]: With dead ends: 853 [2021-11-02 13:17:49,685 INFO L226 Difference]: Without dead ends: 849 [2021-11-02 13:17:49,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 14214.68ms TimeCoverageRelationStatistics Valid=1013, Invalid=3543, Unknown=0, NotChecked=0, Total=4556 [2021-11-02 13:17:49,686 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3327 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 5214 mSolverCounterSat, 435 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18014.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3327 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.75ms SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 5214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19110.89ms IncrementalHoareTripleChecker+Time [2021-11-02 13:17:49,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3327 Valid, 0 Invalid, 5650 Unknown, 0 Unchecked, 64.75ms Time], IncrementalHoareTripleChecker [435 Valid, 5214 Invalid, 1 Unknown, 0 Unchecked, 19110.89ms Time] [2021-11-02 13:17:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-02 13:17:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 666. [2021-11-02 13:17:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 656 states have (on average 1.0564024390243902) internal successors, (693), 665 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 13:17:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 693 transitions. [2021-11-02 13:17:49,724 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 693 transitions. Word has length 124 [2021-11-02 13:17:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:17:49,724 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 693 transitions. [2021-11-02 13:17:49,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:17:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 693 transitions. [2021-11-02 13:17:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 13:17:49,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:17:49,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:17:49,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-02 13:17:49,725 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:17:49,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:17:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1327158850, now seen corresponding path program 1 times [2021-11-02 13:17:49,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:17:49,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636532892] [2021-11-02 13:17:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:17:49,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:17:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15