./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_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_read_be32_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 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:12:09,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:12:09,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:12:09,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:12:09,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:12:09,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:12:09,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:12:09,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:12:09,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:12:09,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:12:09,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:12:09,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:12:09,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:12:09,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:12:09,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:12:09,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:12:09,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:12:09,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:12:09,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:12:09,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:12:09,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:12:09,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:12:09,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:12:09,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:12:09,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:12:09,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:12:09,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:12:09,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:12:09,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:12:09,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:12:09,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:12:09,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:12:09,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:12:09,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:12:09,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:12:09,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:12:09,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:12:09,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:12:09,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:12:09,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:12:09,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:12:09,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:12:09,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:12:09,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:12:09,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:12:09,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:12:09,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:12:09,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:12:09,543 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:12:09,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:12:09,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:12:09,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:12:09,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:12:09,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:12:09,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:12:09,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:12:09,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:12:09,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:12:09,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:12:09,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:12:09,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:12:09,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:12:09,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:12:09,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:12:09,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:12:09,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:12:09,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:12:09,546 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:12:09,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:12:09,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:12:09,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:12:09,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a [2021-11-02 13:12:09,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:12:09,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:12:09,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:12:09,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:12:09,813 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:12:09,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2021-11-02 13:12:09,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222826ae0/b3d231eee8fe417da603cbf5da11f2b8/FLAGa1f00a1e2 [2021-11-02 13:12:10,584 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:12:10,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2021-11-02 13:12:10,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222826ae0/b3d231eee8fe417da603cbf5da11f2b8/FLAGa1f00a1e2 [2021-11-02 13:12:10,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222826ae0/b3d231eee8fe417da603cbf5da11f2b8 [2021-11-02 13:12:10,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:12:10,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:12:10,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:12:10,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:12:10,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:12:10,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:12:10" (1/1) ... [2021-11-02 13:12:10,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d5728e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:10, skipping insertion in model container [2021-11-02 13:12:10,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:12:10" (1/1) ... [2021-11-02 13:12:10,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:12:10,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:12:11,243 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_read_be32_harness.i[4499,4512] [2021-11-02 13:12:11,253 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_read_be32_harness.i[4559,4572] [2021-11-02 13:12:11,280 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:12:11,292 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:12:11,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:11,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:11,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:11,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:11,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:11,776 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:11,776 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:11,777 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:11,778 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:12:12,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:12:12,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:12:12,032 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:12:12,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:12:12,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:12:12,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:12:12,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:12:12,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:12:12,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:12:12,126 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:12:12,266 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,267 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:12:12,398 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:12:12,409 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_read_be32_harness.i[4499,4512] [2021-11-02 13:12:12,410 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_read_be32_harness.i[4559,4572] [2021-11-02 13:12:12,412 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:12:12,412 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:12:12,437 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,437 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,438 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,438 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,439 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,443 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,444 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,444 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,445 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,487 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:12:12,488 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:12:12,489 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:12:12,493 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:12:12,494 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:12:12,494 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:12:12,495 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:12:12,495 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:12:12,496 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:12:12,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:12:12,528 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:12:12,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:12:12,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:12:12,818 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:12:12,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12 WrapperNode [2021-11-02 13:12:12,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:12:12,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:12:12,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:12:12,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:12:12,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:12,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:13,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:12:13,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:12:13,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:12:13,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:12:13,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:13,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:13,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:13,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:13,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:13,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:13,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:13,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:12:13,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:12:13,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:12:13,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:12:13,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (1/1) ... [2021-11-02 13:12:13,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:12:13,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:12:13,253 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 13:12:13,343 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 13:12:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure ntohl [2021-11-02 13:12:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:12:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-02 13:12:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 13:12:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 13:12:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:12:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:12:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:12:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:12:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:12:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 13:12:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 13:12:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:12:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:12:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:12:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:12:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-02 13:12:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:12:18,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:12:18,510 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-11-02 13:12:18,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:12:18 BoogieIcfgContainer [2021-11-02 13:12:18,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:12:18,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:12:18,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:12:18,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:12:18,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:12:10" (1/3) ... [2021-11-02 13:12:18,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a8d1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:12:18, skipping insertion in model container [2021-11-02 13:12:18,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:12:12" (2/3) ... [2021-11-02 13:12:18,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a8d1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:12:18, skipping insertion in model container [2021-11-02 13:12:18,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:12:18" (3/3) ... [2021-11-02 13:12:18,533 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be32_harness.i [2021-11-02 13:12:18,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:12:18,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-02 13:12:18,595 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:12:18,600 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 13:12:18,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-02 13:12:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 223 states have (on average 1.4798206278026906) internal successors, (330), 237 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 13:12:18,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:18,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:18,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:12:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1601055385, now seen corresponding path program 1 times [2021-11-02 13:12:18,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:18,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057084535] [2021-11-02 13:12:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:18,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:19,179 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 13:12:19,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:19,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057084535] [2021-11-02 13:12:19,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057084535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:19,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:19,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:12:19,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643231452] [2021-11-02 13:12:19,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:12:19,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:19,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:12:19,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:12:19,212 INFO L87 Difference]: Start difference. First operand has 238 states, 223 states have (on average 1.4798206278026906) internal successors, (330), 237 states have internal predecessors, (330), 0 states have call successors, (0), 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 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:21,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:12:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:22,797 INFO L93 Difference]: Finished difference Result 471 states and 653 transitions. [2021-11-02 13:12:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:12:22,801 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-02 13:12:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:22,808 INFO L225 Difference]: With dead ends: 471 [2021-11-02 13:12:22,809 INFO L226 Difference]: Without dead ends: 233 [2021-11-02 13:12:22,811 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 13:12:22,813 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3179.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3508.92ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:22,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 303 Unknown, 0 Unchecked, 5.03ms Time], IncrementalHoareTripleChecker [0 Valid, 302 Invalid, 1 Unknown, 0 Unchecked, 3508.92ms Time] [2021-11-02 13:12:22,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-02 13:12:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-02 13:12:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 219 states have (on average 1.360730593607306) internal successors, (298), 232 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 298 transitions. [2021-11-02 13:12:22,844 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 298 transitions. Word has length 54 [2021-11-02 13:12:22,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:22,844 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 298 transitions. [2021-11-02 13:12:22,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 298 transitions. [2021-11-02 13:12:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 13:12:22,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:22,846 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] [2021-11-02 13:12:22,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:12:22,847 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:12:22,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:22,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1113430879, now seen corresponding path program 1 times [2021-11-02 13:12:22,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:22,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559054213] [2021-11-02 13:12:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:22,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:23,118 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 13:12:23,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:23,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559054213] [2021-11-02 13:12:23,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559054213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:23,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:23,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:12:23,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459799351] [2021-11-02 13:12:23,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:12:23,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:12:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:12:23,121 INFO L87 Difference]: Start difference. First operand 233 states and 298 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:25,168 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 13:12:27,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:27,414 INFO L93 Difference]: Finished difference Result 441 states and 564 transitions. [2021-11-02 13:12:27,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:12:27,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-02 13:12:27,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:27,416 INFO L225 Difference]: With dead ends: 441 [2021-11-02 13:12:27,416 INFO L226 Difference]: Without dead ends: 233 [2021-11-02 13:12:27,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.71ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:12:27,419 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 399 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3871.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.48ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4222.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:27,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 0 Invalid, 477 Unknown, 0 Unchecked, 15.48ms Time], IncrementalHoareTripleChecker [11 Valid, 465 Invalid, 1 Unknown, 0 Unchecked, 4222.48ms Time] [2021-11-02 13:12:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-02 13:12:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-02 13:12:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 219 states have (on average 1.3470319634703196) internal successors, (295), 232 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 295 transitions. [2021-11-02 13:12:27,430 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 295 transitions. Word has length 54 [2021-11-02 13:12:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:27,431 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 295 transitions. [2021-11-02 13:12:27,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 295 transitions. [2021-11-02 13:12:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 13:12:27,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:27,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:27,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 13:12:27,433 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:12:27,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1476329313, now seen corresponding path program 1 times [2021-11-02 13:12:27,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:27,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139500339] [2021-11-02 13:12:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:27,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:27,705 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 13:12:27,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:27,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139500339] [2021-11-02 13:12:27,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139500339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:27,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:27,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 13:12:27,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644810090] [2021-11-02 13:12:27,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 13:12:27,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:27,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 13:12:27,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 13:12:27,707 INFO L87 Difference]: Start difference. First operand 233 states and 295 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:29,756 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 13:12:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:32,401 INFO L93 Difference]: Finished difference Result 426 states and 543 transitions. [2021-11-02 13:12:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 13:12:32,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-02 13:12:32,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:32,405 INFO L225 Difference]: With dead ends: 426 [2021-11-02 13:12:32,405 INFO L226 Difference]: Without dead ends: 234 [2021-11-02 13:12:32,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 13:12:32,406 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4265.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4637.68ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:32,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 588 Unknown, 0 Unchecked, 8.07ms Time], IncrementalHoareTripleChecker [0 Valid, 587 Invalid, 1 Unknown, 0 Unchecked, 4637.68ms Time] [2021-11-02 13:12:32,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-02 13:12:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-02 13:12:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 220 states have (on average 1.3454545454545455) internal successors, (296), 233 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 296 transitions. [2021-11-02 13:12:32,427 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 296 transitions. Word has length 58 [2021-11-02 13:12:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:32,427 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 296 transitions. [2021-11-02 13:12:32,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 296 transitions. [2021-11-02 13:12:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 13:12:32,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:32,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:32,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 13:12:32,430 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:12:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash -781844374, now seen corresponding path program 1 times [2021-11-02 13:12:32,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:32,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579261280] [2021-11-02 13:12:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:32,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:12:32,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:32,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579261280] [2021-11-02 13:12:32,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579261280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:32,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:32,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:12:32,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157569449] [2021-11-02 13:12:32,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:12:32,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:32,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:12:32,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:12:32,732 INFO L87 Difference]: Start difference. First operand 234 states and 296 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:34,776 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 13:12:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:37,934 INFO L93 Difference]: Finished difference Result 499 states and 629 transitions. [2021-11-02 13:12:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:12:37,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-02 13:12:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:37,936 INFO L225 Difference]: With dead ends: 499 [2021-11-02 13:12:37,936 INFO L226 Difference]: Without dead ends: 308 [2021-11-02 13:12:37,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.28ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:12:37,937 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4772.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5133.23ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:37,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 751 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [1 Valid, 749 Invalid, 1 Unknown, 0 Unchecked, 5133.23ms Time] [2021-11-02 13:12:37,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-02 13:12:37,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 235. [2021-11-02 13:12:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 221 states have (on average 1.3438914027149322) internal successors, (297), 234 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 297 transitions. [2021-11-02 13:12:37,946 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 297 transitions. Word has length 59 [2021-11-02 13:12:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:37,946 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 297 transitions. [2021-11-02 13:12:37,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 297 transitions. [2021-11-02 13:12:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 13:12:37,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:37,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:37,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 13:12:37,971 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:12:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:37,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1178563137, now seen corresponding path program 1 times [2021-11-02 13:12:37,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:37,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633570365] [2021-11-02 13:12:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:37,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:12:38,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:38,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633570365] [2021-11-02 13:12:38,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633570365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:38,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:38,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:12:38,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602598922] [2021-11-02 13:12:38,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:12:38,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:12:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:12:38,308 INFO L87 Difference]: Start difference. First operand 235 states and 297 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:40,354 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 13:12:42,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:42,560 INFO L93 Difference]: Finished difference Result 400 states and 506 transitions. [2021-11-02 13:12:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:12:42,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-02 13:12:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:42,561 INFO L225 Difference]: With dead ends: 400 [2021-11-02 13:12:42,561 INFO L226 Difference]: Without dead ends: 235 [2021-11-02 13:12:42,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 136.94ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:12:42,562 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 610 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3891.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.10ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4105.30ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:42,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 0 Invalid, 521 Unknown, 0 Unchecked, 11.10ms Time], IncrementalHoareTripleChecker [10 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 4105.30ms Time] [2021-11-02 13:12:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-02 13:12:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2021-11-02 13:12:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 221 states have (on average 1.334841628959276) internal successors, (295), 234 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 295 transitions. [2021-11-02 13:12:42,570 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 295 transitions. Word has length 60 [2021-11-02 13:12:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:42,571 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 295 transitions. [2021-11-02 13:12:42,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 295 transitions. [2021-11-02 13:12:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 13:12:42,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:42,572 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] [2021-11-02 13:12:42,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 13:12:42,573 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:12:42,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:42,573 INFO L85 PathProgramCache]: Analyzing trace with hash -424057434, now seen corresponding path program 1 times [2021-11-02 13:12:42,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:42,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418028356] [2021-11-02 13:12:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:42,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:12:42,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:42,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418028356] [2021-11-02 13:12:42,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418028356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:42,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:42,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:12:42,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534729207] [2021-11-02 13:12:42,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:12:42,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:42,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:12:42,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:12:42,903 INFO L87 Difference]: Start difference. First operand 235 states and 295 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:44,950 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 13:12:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:47,863 INFO L93 Difference]: Finished difference Result 385 states and 483 transitions. [2021-11-02 13:12:47,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:12:47,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-02 13:12:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:47,865 INFO L225 Difference]: With dead ends: 385 [2021-11-02 13:12:47,865 INFO L226 Difference]: Without dead ends: 235 [2021-11-02 13:12:47,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 258.90ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:12:47,867 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 817 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4384.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.07ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4723.89ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:47,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 0 Invalid, 583 Unknown, 0 Unchecked, 11.07ms Time], IncrementalHoareTripleChecker [11 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 4723.89ms Time] [2021-11-02 13:12:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-02 13:12:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2021-11-02 13:12:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 221 states have (on average 1.3212669683257918) internal successors, (292), 234 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 292 transitions. [2021-11-02 13:12:47,873 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 292 transitions. Word has length 62 [2021-11-02 13:12:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:47,874 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 292 transitions. [2021-11-02 13:12:47,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 292 transitions. [2021-11-02 13:12:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 13:12:47,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:47,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:47,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 13:12:47,876 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:12:47,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2114750081, now seen corresponding path program 1 times [2021-11-02 13:12:47,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:47,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014201640] [2021-11-02 13:12:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:47,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:12:48,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:48,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014201640] [2021-11-02 13:12:48,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014201640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:48,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:48,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:12:48,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263400687] [2021-11-02 13:12:48,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:12:48,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:48,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:12:48,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:12:48,251 INFO L87 Difference]: Start difference. First operand 235 states and 292 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:50,299 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 13:12:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:12:53,434 INFO L93 Difference]: Finished difference Result 368 states and 454 transitions. [2021-11-02 13:12:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:12:53,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 13:12:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:12:53,436 INFO L225 Difference]: With dead ends: 368 [2021-11-02 13:12:53,436 INFO L226 Difference]: Without dead ends: 235 [2021-11-02 13:12:53,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 417.47ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:12:53,437 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1004 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4571.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.68ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4831.50ms IncrementalHoareTripleChecker+Time [2021-11-02 13:12:53,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 0 Invalid, 667 Unknown, 0 Unchecked, 11.68ms Time], IncrementalHoareTripleChecker [9 Valid, 657 Invalid, 1 Unknown, 0 Unchecked, 4831.50ms Time] [2021-11-02 13:12:53,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-02 13:12:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2021-11-02 13:12:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 221 states have (on average 1.3167420814479638) internal successors, (291), 234 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 291 transitions. [2021-11-02 13:12:53,445 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 291 transitions. Word has length 64 [2021-11-02 13:12:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:12:53,446 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 291 transitions. [2021-11-02 13:12:53,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 291 transitions. [2021-11-02 13:12:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 13:12:53,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:12:53,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:12:53,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 13:12:53,449 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:12:53,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:12:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash -935938244, now seen corresponding path program 1 times [2021-11-02 13:12:53,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:12:53,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213312356] [2021-11-02 13:12:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:12:53,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:12:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:12:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 13:12:53,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:12:53,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213312356] [2021-11-02 13:12:53,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213312356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:12:53,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:12:53,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:12:53,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104130151] [2021-11-02 13:12:53,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:12:53,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:12:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:12:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:12:53,976 INFO L87 Difference]: Start difference. First operand 235 states and 291 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:12:56,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:01,730 INFO L93 Difference]: Finished difference Result 538 states and 664 transitions. [2021-11-02 13:13:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:13:01,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 13:13:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:01,732 INFO L225 Difference]: With dead ends: 538 [2021-11-02 13:13:01,732 INFO L226 Difference]: Without dead ends: 393 [2021-11-02 13:13:01,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 469.24ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:13:01,734 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 630 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6988.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.28ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7382.07ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:01,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 0 Invalid, 1489 Unknown, 0 Unchecked, 17.28ms Time], IncrementalHoareTripleChecker [13 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 7382.07ms Time] [2021-11-02 13:13:01,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-02 13:13:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 242. [2021-11-02 13:13:01,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 228 states have (on average 1.3070175438596492) internal successors, (298), 241 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 298 transitions. [2021-11-02 13:13:01,745 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 298 transitions. Word has length 66 [2021-11-02 13:13:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:01,746 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 298 transitions. [2021-11-02 13:13:01,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 298 transitions. [2021-11-02 13:13:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 13:13:01,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:01,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:13:01,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 13:13:01,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:13:01,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1328965254, now seen corresponding path program 1 times [2021-11-02 13:13:01,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:01,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16087192] [2021-11-02 13:13:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:01,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:13:02,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:02,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16087192] [2021-11-02 13:13:02,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16087192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:13:02,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127590081] [2021-11-02 13:13:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:02,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:13:02,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:13:02,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:13:02,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 13:13:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:03,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 13:13:03,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:13:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:13:03,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:13:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 13:13:03,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127590081] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:13:03,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:13:03,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 13:13:03,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670764861] [2021-11-02 13:13:03,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:13:03,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:03,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:13:03,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:13:03,808 INFO L87 Difference]: Start difference. First operand 242 states and 298 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 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 13:13:05,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:09,445 INFO L93 Difference]: Finished difference Result 445 states and 552 transitions. [2021-11-02 13:13:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:13:09,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 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 66 [2021-11-02 13:13:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:09,447 INFO L225 Difference]: With dead ends: 445 [2021-11-02 13:13:09,447 INFO L226 Difference]: Without dead ends: 245 [2021-11-02 13:13:09,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 213.49ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:13:09,450 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5201.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.61ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5576.27ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:09,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 869 Unknown, 0 Unchecked, 6.61ms Time], IncrementalHoareTripleChecker [4 Valid, 864 Invalid, 1 Unknown, 0 Unchecked, 5576.27ms Time] [2021-11-02 13:13:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-02 13:13:09,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-11-02 13:13:09,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 231 states have (on average 1.303030303030303) internal successors, (301), 244 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:09,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 301 transitions. [2021-11-02 13:13:09,458 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 301 transitions. Word has length 66 [2021-11-02 13:13:09,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:09,458 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 301 transitions. [2021-11-02 13:13:09,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 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 13:13:09,458 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 301 transitions. [2021-11-02 13:13:09,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 13:13:09,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:09,459 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:09,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 13:13:09,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:13:09,676 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:13:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:09,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1814679323, now seen corresponding path program 2 times [2021-11-02 13:13:09,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:09,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957458212] [2021-11-02 13:13:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:09,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:13:10,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:10,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957458212] [2021-11-02 13:13:10,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957458212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:10,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:10,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:13:10,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316066544] [2021-11-02 13:13:10,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:13:10,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:13:10,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:13:10,694 INFO L87 Difference]: Start difference. First operand 245 states and 301 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:12,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:19,738 INFO L93 Difference]: Finished difference Result 440 states and 525 transitions. [2021-11-02 13:13:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:13:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 13:13:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:19,741 INFO L225 Difference]: With dead ends: 440 [2021-11-02 13:13:19,741 INFO L226 Difference]: Without dead ends: 424 [2021-11-02 13:13:19,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 339.29ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:13:19,742 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8141.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.51ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8739.93ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:19,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 1529 Unknown, 0 Unchecked, 14.51ms Time], IncrementalHoareTripleChecker [78 Valid, 1450 Invalid, 1 Unknown, 0 Unchecked, 8739.93ms Time] [2021-11-02 13:13:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-02 13:13:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 265. [2021-11-02 13:13:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 251 states have (on average 1.2749003984063745) internal successors, (320), 264 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 320 transitions. [2021-11-02 13:13:19,753 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 320 transitions. Word has length 69 [2021-11-02 13:13:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:19,753 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 320 transitions. [2021-11-02 13:13:19,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 320 transitions. [2021-11-02 13:13:19,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 13:13:19,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:19,754 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:19,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 13:13:19,755 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:13:19,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2076755101, now seen corresponding path program 1 times [2021-11-02 13:13:19,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:19,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926957552] [2021-11-02 13:13:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:19,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:13:21,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:21,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926957552] [2021-11-02 13:13:21,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926957552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:21,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:21,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 13:13:21,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398452990] [2021-11-02 13:13:21,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 13:13:21,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 13:13:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:13:21,662 INFO L87 Difference]: Start difference. First operand 265 states and 320 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:22,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:25,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:26,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:29,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:32,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:35,377 WARN L515 Checker$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 13:13:37,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:39,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:42,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:44,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:13:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:13:58,970 INFO L93 Difference]: Finished difference Result 636 states and 760 transitions. [2021-11-02 13:13:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 13:13:58,970 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 13:13:58,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:13:58,973 INFO L225 Difference]: With dead ends: 636 [2021-11-02 13:13:58,973 INFO L226 Difference]: Without dead ends: 437 [2021-11-02 13:13:58,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3196.25ms TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2021-11-02 13:13:58,975 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1215 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 2737 mSolverCounterSat, 76 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30745.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.90ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2737 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34553.47ms IncrementalHoareTripleChecker+Time [2021-11-02 13:13:58,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 0 Invalid, 2821 Unknown, 0 Unchecked, 30.90ms Time], IncrementalHoareTripleChecker [76 Valid, 2737 Invalid, 8 Unknown, 0 Unchecked, 34553.47ms Time] [2021-11-02 13:13:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-02 13:13:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 341. [2021-11-02 13:13:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.2446483180428134) internal successors, (407), 340 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 407 transitions. [2021-11-02 13:13:58,989 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 407 transitions. Word has length 73 [2021-11-02 13:13:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:13:58,989 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 407 transitions. [2021-11-02 13:13:58,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:13:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 407 transitions. [2021-11-02 13:13:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 13:13:58,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:13:58,990 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:58,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 13:13:58,991 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:13:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:13:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1023505992, now seen corresponding path program 1 times [2021-11-02 13:13:58,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:13:58,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293661050] [2021-11-02 13:13:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:13:58,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:13:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:13:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:13:59,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:13:59,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293661050] [2021-11-02 13:13:59,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293661050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:13:59,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:13:59,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:13:59,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375823403] [2021-11-02 13:13:59,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:13:59,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:13:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:13:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:13:59,308 INFO L87 Difference]: Start difference. First operand 341 states and 407 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 13:14:02,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:06,051 INFO L93 Difference]: Finished difference Result 501 states and 596 transitions. [2021-11-02 13:14:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:14:06,051 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 74 [2021-11-02 13:14:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:06,053 INFO L225 Difference]: With dead ends: 501 [2021-11-02 13:14:06,053 INFO L226 Difference]: Without dead ends: 341 [2021-11-02 13:14:06,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:14:06,054 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6075.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.28ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6663.12ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:06,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 704 Unknown, 0 Unchecked, 5.28ms Time], IncrementalHoareTripleChecker [9 Valid, 694 Invalid, 1 Unknown, 0 Unchecked, 6663.12ms Time] [2021-11-02 13:14:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-02 13:14:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-11-02 13:14:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.238532110091743) internal successors, (405), 340 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 405 transitions. [2021-11-02 13:14:06,066 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 405 transitions. Word has length 74 [2021-11-02 13:14:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:06,067 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 405 transitions. [2021-11-02 13:14:06,067 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 13:14:06,067 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 405 transitions. [2021-11-02 13:14:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 13:14:06,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:06,068 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:06,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 13:14:06,069 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:14:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:06,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1523912085, now seen corresponding path program 1 times [2021-11-02 13:14:06,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:06,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324713515] [2021-11-02 13:14:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:06,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:14:06,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:06,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324713515] [2021-11-02 13:14:06,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324713515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:06,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:06,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:14:06,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072044979] [2021-11-02 13:14:06,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:14:06,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:06,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:14:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:14:06,664 INFO L87 Difference]: Start difference. First operand 341 states and 405 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:09,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:15,498 INFO L93 Difference]: Finished difference Result 591 states and 699 transitions. [2021-11-02 13:14:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:14:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 13:14:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:15,500 INFO L225 Difference]: With dead ends: 591 [2021-11-02 13:14:15,500 INFO L226 Difference]: Without dead ends: 398 [2021-11-02 13:14:15,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 521.37ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:14:15,501 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 585 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7913.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.66ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8516.35ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:15,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 0 Invalid, 1682 Unknown, 0 Unchecked, 11.66ms Time], IncrementalHoareTripleChecker [30 Valid, 1651 Invalid, 1 Unknown, 0 Unchecked, 8516.35ms Time] [2021-11-02 13:14:15,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-02 13:14:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 341. [2021-11-02 13:14:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.235474006116208) internal successors, (404), 340 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:15,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 404 transitions. [2021-11-02 13:14:15,511 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 404 transitions. Word has length 77 [2021-11-02 13:14:15,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:15,511 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 404 transitions. [2021-11-02 13:14:15,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:15,511 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 404 transitions. [2021-11-02 13:14:15,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 13:14:15,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:15,512 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:15,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 13:14:15,512 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:14:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1913157973, now seen corresponding path program 1 times [2021-11-02 13:14:15,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:15,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921103770] [2021-11-02 13:14:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:15,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:14:15,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:15,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921103770] [2021-11-02 13:14:15,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921103770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:15,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:15,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:14:15,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999702422] [2021-11-02 13:14:15,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:14:15,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:14:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:14:15,766 INFO L87 Difference]: Start difference. First operand 341 states and 404 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:18,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:22,431 INFO L93 Difference]: Finished difference Result 539 states and 641 transitions. [2021-11-02 13:14:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:14:22,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-02 13:14:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:22,432 INFO L225 Difference]: With dead ends: 539 [2021-11-02 13:14:22,432 INFO L226 Difference]: Without dead ends: 365 [2021-11-02 13:14:22,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 130.31ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:14:22,433 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5984.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6531.97ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:22,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 1146 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [11 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 6531.97ms Time] [2021-11-02 13:14:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-02 13:14:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 351. [2021-11-02 13:14:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 337 states have (on average 1.228486646884273) internal successors, (414), 350 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 414 transitions. [2021-11-02 13:14:22,441 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 414 transitions. Word has length 80 [2021-11-02 13:14:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:22,441 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 414 transitions. [2021-11-02 13:14:22,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:22,442 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 414 transitions. [2021-11-02 13:14:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 13:14:22,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:22,442 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:22,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 13:14:22,443 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:14:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2116380707, now seen corresponding path program 1 times [2021-11-02 13:14:22,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:22,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632497890] [2021-11-02 13:14:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:22,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:14:22,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:22,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632497890] [2021-11-02 13:14:22,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632497890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:22,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:22,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:14:22,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424107927] [2021-11-02 13:14:22,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:14:22,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:22,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:14:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:14:22,879 INFO L87 Difference]: Start difference. First operand 351 states and 414 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:24,934 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 13:14:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:31,339 INFO L93 Difference]: Finished difference Result 588 states and 690 transitions. [2021-11-02 13:14:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:14:31,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 13:14:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:31,341 INFO L225 Difference]: With dead ends: 588 [2021-11-02 13:14:31,341 INFO L226 Difference]: Without dead ends: 430 [2021-11-02 13:14:31,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 446.67ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:14:31,342 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 336 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7475.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.53ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8124.37ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:31,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 0 Invalid, 1911 Unknown, 0 Unchecked, 13.53ms Time], IncrementalHoareTripleChecker [26 Valid, 1884 Invalid, 1 Unknown, 0 Unchecked, 8124.37ms Time] [2021-11-02 13:14:31,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-02 13:14:31,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 345. [2021-11-02 13:14:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 331 states have (on average 1.229607250755287) internal successors, (407), 344 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 407 transitions. [2021-11-02 13:14:31,351 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 407 transitions. Word has length 81 [2021-11-02 13:14:31,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:31,351 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 407 transitions. [2021-11-02 13:14:31,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 407 transitions. [2021-11-02 13:14:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 13:14:31,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:31,352 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:31,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 13:14:31,353 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:14:31,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash -220302441, now seen corresponding path program 1 times [2021-11-02 13:14:31,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:31,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17573476] [2021-11-02 13:14:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:31,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 13:14:32,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:32,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17573476] [2021-11-02 13:14:32,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17573476] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:14:32,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102208617] [2021-11-02 13:14:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:32,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:14:32,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:14:32,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:14:32,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 13:14:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:33,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 3228 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 13:14:33,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:14:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:14:34,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:14:34,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102208617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:34,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:14:34,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2021-11-02 13:14:34,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638562862] [2021-11-02 13:14:34,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:14:34,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:34,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:14:34,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:14:34,140 INFO L87 Difference]: Start difference. First operand 345 states and 407 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 13:14:37,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:45,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:45,714 INFO L93 Difference]: Finished difference Result 788 states and 915 transitions. [2021-11-02 13:14:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:14:45,714 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 85 [2021-11-02 13:14:45,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:45,716 INFO L225 Difference]: With dead ends: 788 [2021-11-02 13:14:45,716 INFO L226 Difference]: Without dead ends: 451 [2021-11-02 13:14:45,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1037.33ms TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-02 13:14:45,717 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10538.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.26ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11303.50ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:45,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 2157 Unknown, 0 Unchecked, 16.26ms Time], IncrementalHoareTripleChecker [62 Valid, 2094 Invalid, 1 Unknown, 0 Unchecked, 11303.50ms Time] [2021-11-02 13:14:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-02 13:14:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 345. [2021-11-02 13:14:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 331 states have (on average 1.2175226586102719) internal successors, (403), 344 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 403 transitions. [2021-11-02 13:14:45,729 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 403 transitions. Word has length 85 [2021-11-02 13:14:45,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:45,729 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 403 transitions. [2021-11-02 13:14:45,730 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 13:14:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 403 transitions. [2021-11-02 13:14:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 13:14:45,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:45,731 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:45,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 13:14:45,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 13:14:45,952 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:14:45,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1755794914, now seen corresponding path program 1 times [2021-11-02 13:14:45,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:45,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809301614] [2021-11-02 13:14:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:45,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:14:46,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:46,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809301614] [2021-11-02 13:14:46,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809301614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:46,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:46,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:14:46,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921812699] [2021-11-02 13:14:46,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:14:46,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:14:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:14:46,254 INFO L87 Difference]: Start difference. First operand 345 states and 403 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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 13:14:49,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:52,127 INFO L93 Difference]: Finished difference Result 453 states and 530 transitions. [2021-11-02 13:14:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:14:52,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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 90 [2021-11-02 13:14:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:52,129 INFO L225 Difference]: With dead ends: 453 [2021-11-02 13:14:52,129 INFO L226 Difference]: Without dead ends: 335 [2021-11-02 13:14:52,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:14:52,129 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 179 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5303.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.30ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5802.79ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:52,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 0 Invalid, 633 Unknown, 0 Unchecked, 4.30ms Time], IncrementalHoareTripleChecker [2 Valid, 630 Invalid, 1 Unknown, 0 Unchecked, 5802.79ms Time] [2021-11-02 13:14:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-02 13:14:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334. [2021-11-02 13:14:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 320 states have (on average 1.215625) internal successors, (389), 333 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:52,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 389 transitions. [2021-11-02 13:14:52,138 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 389 transitions. Word has length 90 [2021-11-02 13:14:52,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:52,138 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 389 transitions. [2021-11-02 13:14:52,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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 13:14:52,139 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 389 transitions. [2021-11-02 13:14:52,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 13:14:52,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:52,139 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:52,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 13:14:52,140 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:14:52,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2001270879, now seen corresponding path program 1 times [2021-11-02 13:14:52,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:52,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420962645] [2021-11-02 13:14:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:52,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 13:14:52,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:52,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420962645] [2021-11-02 13:14:52,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420962645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:52,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:52,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:14:52,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554362137] [2021-11-02 13:14:52,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:14:52,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:14:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:14:52,419 INFO L87 Difference]: Start difference. First operand 334 states and 389 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 13:14:55,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:14:58,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:14:58,026 INFO L93 Difference]: Finished difference Result 436 states and 508 transitions. [2021-11-02 13:14:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:14:58,026 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 91 [2021-11-02 13:14:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:14:58,027 INFO L225 Difference]: With dead ends: 436 [2021-11-02 13:14:58,027 INFO L226 Difference]: Without dead ends: 335 [2021-11-02 13:14:58,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 118.65ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:14:58,028 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 412 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5020.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5514.96ms IncrementalHoareTripleChecker+Time [2021-11-02 13:14:58,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 0 Invalid, 681 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [6 Valid, 674 Invalid, 1 Unknown, 0 Unchecked, 5514.96ms Time] [2021-11-02 13:14:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-02 13:14:58,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-11-02 13:14:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 321 states have (on average 1.2149532710280373) internal successors, (390), 334 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:14:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 390 transitions. [2021-11-02 13:14:58,035 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 390 transitions. Word has length 91 [2021-11-02 13:14:58,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:14:58,036 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 390 transitions. [2021-11-02 13:14:58,036 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 13:14:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 390 transitions. [2021-11-02 13:14:58,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 13:14:58,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:14:58,036 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:58,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 13:14:58,037 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:14:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:14:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1495044718, now seen corresponding path program 1 times [2021-11-02 13:14:58,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:14:58,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724728233] [2021-11-02 13:14:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:14:58,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:14:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:14:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:14:58,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:14:58,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724728233] [2021-11-02 13:14:58,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724728233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:14:58,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:14:58,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:14:58,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355833726] [2021-11-02 13:14:58,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:14:58,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:14:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:14:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:14:58,257 INFO L87 Difference]: Start difference. First operand 335 states and 390 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 13:15:01,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:15:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:15:05,914 INFO L93 Difference]: Finished difference Result 720 states and 833 transitions. [2021-11-02 13:15:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:15:05,914 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 91 [2021-11-02 13:15:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:15:05,915 INFO L225 Difference]: With dead ends: 720 [2021-11-02 13:15:05,915 INFO L226 Difference]: Without dead ends: 407 [2021-11-02 13:15:05,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 77.80ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:15:05,917 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6973.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.07ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7576.04ms IncrementalHoareTripleChecker+Time [2021-11-02 13:15:05,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 1153 Unknown, 0 Unchecked, 8.07ms Time], IncrementalHoareTripleChecker [46 Valid, 1106 Invalid, 1 Unknown, 0 Unchecked, 7576.04ms Time] [2021-11-02 13:15:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-02 13:15:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 335. [2021-11-02 13:15:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 321 states have (on average 1.1806853582554517) internal successors, (379), 334 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 13:15:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 379 transitions. [2021-11-02 13:15:05,926 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 379 transitions. Word has length 91 [2021-11-02 13:15:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:15:05,926 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 379 transitions. [2021-11-02 13:15:05,926 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 13:15:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 379 transitions. [2021-11-02 13:15:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 13:15:05,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:15:05,927 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:15:05,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 13:15:05,927 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:15:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:15:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash 921681552, now seen corresponding path program 1 times [2021-11-02 13:15:05,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:15:05,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665220484] [2021-11-02 13:15:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:05,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:15:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 13:15:07,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:15:07,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665220484] [2021-11-02 13:15:07,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665220484] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:15:07,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169502599] [2021-11-02 13:15:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:15:07,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:15:07,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:15:07,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:15:07,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 13:15:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:15:08,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3258 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-02 13:15:08,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:15:08,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-02 13:15:09,259 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-02 13:15:09,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 21 [2021-11-02 13:15:09,499 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-02 13:15:09,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2021-11-02 13:15:09,659 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-02 13:15:09,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2021-11-02 13:15:09,814 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-02 13:15:09,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2021-11-02 13:15:09,995 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-02 13:15:09,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2021-11-02 13:15:10,283 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-02 13:15:10,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 30 [2021-11-02 13:15:10,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-02 13:15:12,582 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-02 13:15:12,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 61 [2021-11-02 13:15:12,640 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-02 13:15:12,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 57 [2021-11-02 13:15:12,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2021-11-02 13:15:13,880 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 13:15:13,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2021-11-02 13:15:14,260 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 13:15:14,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 41 [2021-11-02 13:15:14,274 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 13:15:14,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2021-11-02 13:15:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 13:15:14,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:15:15,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-11-02 13:15:17,967 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.offset| 8)) (.cse1 (+ c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.offset 8))) (or (and (= |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) (= c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.offset |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.offset|)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) .cse0 0) |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.offset| v_DerPreprocessor_5)) c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) .cse1) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) .cse0 0) |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.offset| v_DerPreprocessor_6)) c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) .cse1) 0))))) is different from false [2021-11-02 13:15:20,314 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int)) (let ((.cse0 (+ c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.offset 8))) (or (and (= |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) (= c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.offset 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) 8 0) 0 v_DerPreprocessor_5)) c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) 8 0) 0 v_DerPreprocessor_6)) c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) .cse0) 0))))) is different from false [2021-11-02 13:15:24,410 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int)) (let ((.cse0 (+ c_ULTIMATE.start_aws_byte_cursor_read_~cur.offset 8))) (or (and (= c_ULTIMATE.start_aws_byte_cursor_read_~cur.offset 0) (= |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| c_ULTIMATE.start_aws_byte_cursor_read_~cur.base)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) 8 0) 0 v_DerPreprocessor_5)) c_ULTIMATE.start_aws_byte_cursor_read_~cur.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) 8 0) 0 v_DerPreprocessor_6)) c_ULTIMATE.start_aws_byte_cursor_read_~cur.base) .cse0) 0))))) is different from false [2021-11-02 13:15:30,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:15:30,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 238 treesize of output 235 [2021-11-02 13:15:30,713 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:15:30,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 404 treesize of output 401 [2021-11-02 13:16:55,861 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:16:55,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12599292 treesize of output 12582908 [2021-11-02 13:17:31,501 WARN L210 SmtUtils]: Spent 35.63s on a formula simplification that was a NOOP. DAG size: 2916 [2021-11-02 13:18:05,759 WARN L210 SmtUtils]: Spent 34.25s on a formula simplification that was a NOOP. DAG size: 2912 [2021-11-02 13:18:05,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-02 13:18:05,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:18:05,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-02 13:18:05,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819453115] [2021-11-02 13:18:05,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 13:18:05,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:18:05,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 13:18:05,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2798, Unknown=34, NotChecked=330, Total=3422 [2021-11-02 13:18:05,937 INFO L87 Difference]: Start difference. First operand 335 states and 379 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:09,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:18:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:18:23,139 INFO L93 Difference]: Finished difference Result 617 states and 699 transitions. [2021-11-02 13:18:23,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 13:18:23,140 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 13:18:23,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:18:23,141 INFO L225 Difference]: With dead ends: 617 [2021-11-02 13:18:23,141 INFO L226 Difference]: Without dead ends: 387 [2021-11-02 13:18:23,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 102009.44ms TimeCoverageRelationStatistics Valid=573, Invalid=4661, Unknown=34, NotChecked=432, Total=5700 [2021-11-02 13:18:23,144 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 495 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 2671 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12896.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.79ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13773.35ms IncrementalHoareTripleChecker+Time [2021-11-02 13:18:23,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 0 Invalid, 2757 Unknown, 0 Unchecked, 24.79ms Time], IncrementalHoareTripleChecker [85 Valid, 2671 Invalid, 1 Unknown, 0 Unchecked, 13773.35ms Time] [2021-11-02 13:18:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-02 13:18:23,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 359. [2021-11-02 13:18:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 345 states have (on average 1.1768115942028985) internal successors, (406), 358 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 406 transitions. [2021-11-02 13:18:23,157 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 406 transitions. Word has length 91 [2021-11-02 13:18:23,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:18:23,157 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 406 transitions. [2021-11-02 13:18:23,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 406 transitions. [2021-11-02 13:18:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 13:18:23,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:18:23,158 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:23,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 13:18:23,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:18:23,380 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:18:23,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:18:23,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1091566340, now seen corresponding path program 1 times [2021-11-02 13:18:23,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:18:23,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697858850] [2021-11-02 13:18:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:23,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:18:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 13:18:23,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:18:23,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697858850] [2021-11-02 13:18:23,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697858850] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:18:23,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099088085] [2021-11-02 13:18:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:23,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:18:23,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:18:23,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:18:23,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 13:18:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:24,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 3332 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 13:18:24,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:18:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 13:18:24,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:18:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 13:18:25,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099088085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 13:18:25,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 13:18:25,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-11-02 13:18:25,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971503492] [2021-11-02 13:18:25,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:18:25,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:18:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:18:25,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:18:25,535 INFO L87 Difference]: Start difference. First operand 359 states and 406 transitions. Second operand has 11 states, 11 states have (on average 15.0) internal successors, (165), 11 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:27,597 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 13:18:31,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:18:31,824 INFO L93 Difference]: Finished difference Result 465 states and 529 transitions. [2021-11-02 13:18:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:18:31,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 11 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 13:18:31,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:18:31,825 INFO L225 Difference]: With dead ends: 465 [2021-11-02 13:18:31,825 INFO L226 Difference]: Without dead ends: 362 [2021-11-02 13:18:31,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 479.56ms TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:18:31,826 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 342 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5598.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.74ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6073.02ms IncrementalHoareTripleChecker+Time [2021-11-02 13:18:31,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 0 Invalid, 903 Unknown, 0 Unchecked, 7.74ms Time], IncrementalHoareTripleChecker [18 Valid, 884 Invalid, 1 Unknown, 0 Unchecked, 6073.02ms Time] [2021-11-02 13:18:31,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-02 13:18:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-11-02 13:18:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 348 states have (on average 1.1752873563218391) internal successors, (409), 361 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 409 transitions. [2021-11-02 13:18:31,834 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 409 transitions. Word has length 92 [2021-11-02 13:18:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:18:31,835 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 409 transitions. [2021-11-02 13:18:31,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 11 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 409 transitions. [2021-11-02 13:18:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 13:18:31,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:18:31,836 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:31,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-02 13:18:32,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:18:32,043 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:18:32,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:18:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1693024801, now seen corresponding path program 1 times [2021-11-02 13:18:32,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:18:32,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138498061] [2021-11-02 13:18:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:32,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:18:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:18:32,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:18:32,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138498061] [2021-11-02 13:18:32,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138498061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:18:32,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:18:32,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:18:32,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817056132] [2021-11-02 13:18:32,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:18:32,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:18:32,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:18:32,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:18:32,390 INFO L87 Difference]: Start difference. First operand 362 states and 409 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 13:18:35,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:18:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:18:39,828 INFO L93 Difference]: Finished difference Result 826 states and 929 transitions. [2021-11-02 13:18:39,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 13:18:39,828 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 94 [2021-11-02 13:18:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:18:39,829 INFO L225 Difference]: With dead ends: 826 [2021-11-02 13:18:39,830 INFO L226 Difference]: Without dead ends: 524 [2021-11-02 13:18:39,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 399.53ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:18:39,830 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 543 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6547.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.02ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7120.76ms IncrementalHoareTripleChecker+Time [2021-11-02 13:18:39,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 0 Invalid, 1236 Unknown, 0 Unchecked, 8.02ms Time], IncrementalHoareTripleChecker [28 Valid, 1207 Invalid, 1 Unknown, 0 Unchecked, 7120.76ms Time] [2021-11-02 13:18:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-02 13:18:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 362. [2021-11-02 13:18:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 348 states have (on average 1.1724137931034482) internal successors, (408), 361 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:39,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 408 transitions. [2021-11-02 13:18:39,839 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 408 transitions. Word has length 94 [2021-11-02 13:18:39,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:18:39,840 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 408 transitions. [2021-11-02 13:18:39,840 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 13:18:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 408 transitions. [2021-11-02 13:18:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 13:18:39,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:18:39,841 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:39,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 13:18:39,841 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:18:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:18:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash -365823649, now seen corresponding path program 2 times [2021-11-02 13:18:39,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:18:39,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444052254] [2021-11-02 13:18:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:39,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:18:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 13:18:40,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:18:40,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444052254] [2021-11-02 13:18:40,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444052254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:18:40,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:18:40,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:18:40,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284805629] [2021-11-02 13:18:40,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:18:40,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:18:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:18:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:18:40,157 INFO L87 Difference]: Start difference. First operand 362 states and 408 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:42,224 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 13:18:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:18:46,105 INFO L93 Difference]: Finished difference Result 575 states and 649 transitions. [2021-11-02 13:18:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:18:46,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-02 13:18:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:18:46,107 INFO L225 Difference]: With dead ends: 575 [2021-11-02 13:18:46,107 INFO L226 Difference]: Without dead ends: 467 [2021-11-02 13:18:46,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.47ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:18:46,108 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5383.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5864.65ms IncrementalHoareTripleChecker+Time [2021-11-02 13:18:46,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 1089 Unknown, 0 Unchecked, 6.40ms Time], IncrementalHoareTripleChecker [1 Valid, 1087 Invalid, 1 Unknown, 0 Unchecked, 5864.65ms Time] [2021-11-02 13:18:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-02 13:18:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 369. [2021-11-02 13:18:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 355 states have (on average 1.1661971830985915) internal successors, (414), 368 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 414 transitions. [2021-11-02 13:18:46,117 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 414 transitions. Word has length 95 [2021-11-02 13:18:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:18:46,117 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 414 transitions. [2021-11-02 13:18:46,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:46,118 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 414 transitions. [2021-11-02 13:18:46,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 13:18:46,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:18:46,118 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:46,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 13:18:46,119 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:18:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:18:46,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1636472033, now seen corresponding path program 1 times [2021-11-02 13:18:46,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:18:46,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280121575] [2021-11-02 13:18:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:46,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:18:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 13:18:46,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:18:46,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280121575] [2021-11-02 13:18:46,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280121575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:18:46,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:18:46,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 13:18:46,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246704301] [2021-11-02 13:18:46,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:18:46,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:18:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:18:46,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:18:46,816 INFO L87 Difference]: Start difference. First operand 369 states and 414 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:49,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:18:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:18:54,363 INFO L93 Difference]: Finished difference Result 731 states and 820 transitions. [2021-11-02 13:18:54,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:18:54,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-02 13:18:54,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:18:54,365 INFO L225 Difference]: With dead ends: 731 [2021-11-02 13:18:54,365 INFO L226 Difference]: Without dead ends: 369 [2021-11-02 13:18:54,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 190.55ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:18:54,366 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6828.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7399.80ms IncrementalHoareTripleChecker+Time [2021-11-02 13:18:54,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 1360 Unknown, 0 Unchecked, 7.95ms Time], IncrementalHoareTripleChecker [0 Valid, 1359 Invalid, 1 Unknown, 0 Unchecked, 7399.80ms Time] [2021-11-02 13:18:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-02 13:18:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2021-11-02 13:18:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 355 states have (on average 1.1633802816901408) internal successors, (413), 368 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 413 transitions. [2021-11-02 13:18:54,377 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 413 transitions. Word has length 97 [2021-11-02 13:18:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:18:54,377 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 413 transitions. [2021-11-02 13:18:54,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:18:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 413 transitions. [2021-11-02 13:18:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 13:18:54,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:18:54,378 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:54,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 13:18:54,379 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-02 13:18:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:18:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1370202527, now seen corresponding path program 1 times [2021-11-02 13:18:54,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:18:54,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121536710] [2021-11-02 13:18:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:54,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:18:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 13:18:56,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:18:56,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121536710] [2021-11-02 13:18:56,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121536710] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 13:18:56,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380794906] [2021-11-02 13:18:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:18:56,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:18:56,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:18:56,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:18:56,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 13:18:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:18:57,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 3302 conjuncts, 194 conjunts are in the unsatisfiable core [2021-11-02 13:18:57,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:18:58,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-02 13:18:59,167 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:18:59,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2021-11-02 13:18:59,252 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:18:59,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2021-11-02 13:18:59,888 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:18:59,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 328 treesize of output 324 [2021-11-02 13:19:00,230 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:00,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 324 treesize of output 320 [2021-11-02 13:19:00,397 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:00,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 126 [2021-11-02 13:19:00,493 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:00,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 122 [2021-11-02 13:19:00,586 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:00,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 118 [2021-11-02 13:19:00,672 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:00,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 114 [2021-11-02 13:19:01,156 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:01,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 229 [2021-11-02 13:19:01,338 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:01,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 225 [2021-11-02 13:19:01,486 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:01,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 221 [2021-11-02 13:19:01,625 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:01,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 217 [2021-11-02 13:19:01,751 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:01,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 213 [2021-11-02 13:19:01,863 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:01,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 213 treesize of output 209 [2021-11-02 13:19:01,982 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:01,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 209 treesize of output 205 [2021-11-02 13:19:02,093 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:02,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 144 [2021-11-02 13:19:02,618 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:02,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 115 [2021-11-02 13:19:02,726 INFO L354 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2021-11-02 13:19:02,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 54 [2021-11-02 13:19:02,950 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-02 13:19:02,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 61 [2021-11-02 13:19:03,039 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-11-02 13:19:03,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 63 [2021-11-02 13:19:03,421 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-02 13:19:03,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2021-11-02 13:19:03,507 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-02 13:19:03,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2021-11-02 13:19:05,658 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-02 13:19:05,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 61 [2021-11-02 13:19:05,729 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-02 13:19:05,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 57 [2021-11-02 13:19:05,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2021-11-02 13:19:06,957 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 13:19:06,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2021-11-02 13:19:07,262 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 13:19:07,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 41 [2021-11-02 13:19:07,271 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 13:19:07,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2021-11-02 13:19:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 13:19:07,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:19:08,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-11-02 13:19:10,753 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| Int) (v_DerPreprocessor_71 Int) (v_DerPreprocessor_72 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.offset| 8)) (.cse1 (+ c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.offset 8))) (or (and (= |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) (= c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.offset |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.offset|)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) .cse0 0) |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.offset| v_DerPreprocessor_71)) c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) .cse1) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) .cse0 0) |c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.offset| v_DerPreprocessor_72)) c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) .cse1) 0))))) is different from false [2021-11-02 13:19:13,023 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| Int) (v_DerPreprocessor_71 Int) (v_DerPreprocessor_72 Int)) (let ((.cse0 (+ c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.offset 8))) (or (and (= |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) (= c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.offset 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) 8 0) 0 v_DerPreprocessor_72)) c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) 8 0) 0 v_DerPreprocessor_71)) c_ULTIMATE.start_aws_byte_cursor_advance_nospec_~cursor.base) .cse0) 0))))) is different from false [2021-11-02 13:19:16,666 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| Int) (v_DerPreprocessor_71 Int) (v_DerPreprocessor_72 Int)) (let ((.cse0 (+ c_ULTIMATE.start_aws_byte_cursor_read_~cur.offset 8))) (or (and (= c_ULTIMATE.start_aws_byte_cursor_read_~cur.offset 0) (= |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| c_ULTIMATE.start_aws_byte_cursor_read_~cur.base)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) 8 0) 0 v_DerPreprocessor_71)) c_ULTIMATE.start_aws_byte_cursor_read_~cur.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_nospec_~#rv~7.base|) 8 0) 0 v_DerPreprocessor_72)) c_ULTIMATE.start_aws_byte_cursor_read_~cur.base) .cse0) 0))))) is different from false [2021-11-02 13:21:00,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 13:21:07,155 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-02 13:21:07,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 512228872282 treesize of output 511420420168 Killed by 15