./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_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_buf_write_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 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:51:34,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:51:34,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:51:34,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:51:34,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:51:34,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:51:34,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:51:34,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:51:34,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:51:34,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:51:34,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:51:34,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:51:34,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:51:34,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:51:34,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:51:34,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:51:34,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:51:34,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:51:34,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:51:34,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:51:34,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:51:34,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:51:34,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:51:34,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:51:34,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:51:34,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:51:34,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:51:34,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:51:34,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:51:34,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:51:34,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:51:34,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:51:34,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:51:34,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:51:34,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:51:34,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:51:34,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:51:34,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:51:34,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:51:34,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:51:34,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:51:34,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:51:34,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:51:34,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:51:34,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:51:34,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:51:34,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:51:34,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:51:34,732 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:51:34,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:51:34,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:51:34,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:51:34,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:51:34,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:51:34,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:51:34,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:51:34,734 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:51:34,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:51:34,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:51:34,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:51:34,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:51:34,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:51:34,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:51:34,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:51:34,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:51:34,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:51:34,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:51:34,736 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:51:34,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:51:34,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:51:34,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:51:34,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2021-11-02 12:51:34,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:51:34,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:51:34,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:51:34,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:51:35,001 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:51:35,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-02 12:51:35,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6ea0a9b/31197c84987544ddb0ce3a2f4a4f5813/FLAGb1760d342 [2021-11-02 12:51:35,750 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:51:35,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-02 12:51:35,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6ea0a9b/31197c84987544ddb0ce3a2f4a4f5813/FLAGb1760d342 [2021-11-02 12:51:35,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6ea0a9b/31197c84987544ddb0ce3a2f4a4f5813 [2021-11-02 12:51:35,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:51:35,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:51:35,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:51:35,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:51:35,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:51:35,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:51:35" (1/1) ... [2021-11-02 12:51:35,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40034824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:35, skipping insertion in model container [2021-11-02 12:51:35,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:51:35" (1/1) ... [2021-11-02 12:51:35,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:51:35,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:51:36,242 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-02 12:51:36,248 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-02 12:51:36,270 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:51:36,279 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:51:36,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:36,858 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:36,858 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:36,859 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:36,861 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:36,871 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:36,879 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:36,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:36,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,154 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:51:37,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:51:37,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:51:37,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:51:37,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:51:37,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:51:37,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:51:37,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:51:37,160 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:51:37,161 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:51:37,255 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:51:37,334 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,335 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:51:37,419 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:51:37,430 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-02 12:51:37,430 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-02 12:51:37,432 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:51:37,435 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:51:37,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,491 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,491 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:51:37,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:51:37,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:51:37,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:51:37,536 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:51:37,537 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:51:37,537 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:51:37,537 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:51:37,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:51:37,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:51:37,571 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:51:37,642 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,642 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:51:37,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:51:37,914 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:51:37,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37 WrapperNode [2021-11-02 12:51:37,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:51:37,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:51:37,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:51:37,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:51:37,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:51:38,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:51:38,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:51:38,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:51:38,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:51:38,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:51:38,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:51:38,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:51:38,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (1/1) ... [2021-11-02 12:51:38,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:51:38,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:51:38,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 12:51:38,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 12:51:38,358 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-02 12:51:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:51:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:51:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:51:38,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:51:38,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:51:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:51:38,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:51:38,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:51:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:51:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:51:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:51:43,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:51:43,948 INFO L299 CfgBuilder]: Removed 89 assume(true) statements. [2021-11-02 12:51:43,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:51:43 BoogieIcfgContainer [2021-11-02 12:51:43,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:51:43,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:51:43,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:51:43,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:51:43,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:51:35" (1/3) ... [2021-11-02 12:51:43,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38383742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:51:43, skipping insertion in model container [2021-11-02 12:51:43,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:51:37" (2/3) ... [2021-11-02 12:51:43,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38383742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:51:43, skipping insertion in model container [2021-11-02 12:51:43,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:51:43" (3/3) ... [2021-11-02 12:51:43,960 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2021-11-02 12:51:43,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:51:43,965 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 12:51:44,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:51:44,020 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 12:51:44,020 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 12:51:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 12:51:44,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:51:44,048 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] [2021-11-02 12:51:44,049 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:51:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:51:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 733514216, now seen corresponding path program 1 times [2021-11-02 12:51:44,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:51:44,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126169468] [2021-11-02 12:51:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:51:44,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:51:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:51:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:51:44,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:51:44,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126169468] [2021-11-02 12:51:44,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126169468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:51:44,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:51:44,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:51:44,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689242460] [2021-11-02 12:51:44,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:51:44,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:51:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:51:44,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:51:44,747 INFO L87 Difference]: Start difference. First operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:46,861 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 12:51:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:51:48,078 INFO L93 Difference]: Finished difference Result 368 states and 511 transitions. [2021-11-02 12:51:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:51:48,081 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-02 12:51:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:51:48,090 INFO L225 Difference]: With dead ends: 368 [2021-11-02 12:51:48,092 INFO L226 Difference]: Without dead ends: 181 [2021-11-02 12:51:48,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:51:48,102 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2978.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3254.69ms IncrementalHoareTripleChecker+Time [2021-11-02 12:51:48,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 4.28ms Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 1 Unknown, 0 Unchecked, 3254.69ms Time] [2021-11-02 12:51:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-02 12:51:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-02 12:51:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3588235294117648) internal successors, (231), 180 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2021-11-02 12:51:48,142 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 39 [2021-11-02 12:51:48,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:51:48,143 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2021-11-02 12:51:48,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2021-11-02 12:51:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 12:51:48,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:51:48,145 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] [2021-11-02 12:51:48,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:51:48,145 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:51:48,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:51:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash 699508844, now seen corresponding path program 1 times [2021-11-02 12:51:48,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:51:48,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206857497] [2021-11-02 12:51:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:51:48,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:51:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:51:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:51:48,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:51:48,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206857497] [2021-11-02 12:51:48,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206857497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:51:48,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:51:48,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:51:48,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135530054] [2021-11-02 12:51:48,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:51:48,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:51:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:51:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:51:48,494 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:50,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:51:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:51:52,059 INFO L93 Difference]: Finished difference Result 336 states and 428 transitions. [2021-11-02 12:51:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:51:52,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-02 12:51:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:51:52,061 INFO L225 Difference]: With dead ends: 336 [2021-11-02 12:51:52,061 INFO L226 Difference]: Without dead ends: 181 [2021-11-02 12:51:52,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.60ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:51:52,064 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3180.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.55ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3482.68ms IncrementalHoareTripleChecker+Time [2021-11-02 12:51:52,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 351 Unknown, 0 Unchecked, 9.55ms Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3482.68ms Time] [2021-11-02 12:51:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-02 12:51:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-02 12:51:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3411764705882352) internal successors, (228), 180 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 228 transitions. [2021-11-02 12:51:52,075 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 228 transitions. Word has length 39 [2021-11-02 12:51:52,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:51:52,075 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 228 transitions. [2021-11-02 12:51:52,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 228 transitions. [2021-11-02 12:51:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 12:51:52,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:51:52,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:51:52,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:51:52,078 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:51:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:51:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1277536330, now seen corresponding path program 1 times [2021-11-02 12:51:52,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:51:52,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86185682] [2021-11-02 12:51:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:51:52,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:51:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:51:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:51:52,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:51:52,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86185682] [2021-11-02 12:51:52,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86185682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:51:52,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:51:52,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:51:52,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483409902] [2021-11-02 12:51:52,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:51:52,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:51:52,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:51:52,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:51:52,334 INFO L87 Difference]: Start difference. First operand 181 states and 228 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:54,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:51:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:51:56,632 INFO L93 Difference]: Finished difference Result 397 states and 508 transitions. [2021-11-02 12:51:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:51:56,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 12:51:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:51:56,634 INFO L225 Difference]: With dead ends: 397 [2021-11-02 12:51:56,634 INFO L226 Difference]: Without dead ends: 241 [2021-11-02 12:51:56,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:51:56,636 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3917.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.40ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4222.70ms IncrementalHoareTripleChecker+Time [2021-11-02 12:51:56,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 9.40ms Time], IncrementalHoareTripleChecker [21 Valid, 699 Invalid, 1 Unknown, 0 Unchecked, 4222.70ms Time] [2021-11-02 12:51:56,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-02 12:51:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 193. [2021-11-02 12:51:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3186813186813187) internal successors, (240), 192 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 240 transitions. [2021-11-02 12:51:56,648 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 240 transitions. Word has length 51 [2021-11-02 12:51:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:51:56,648 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 240 transitions. [2021-11-02 12:51:56,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 240 transitions. [2021-11-02 12:51:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 12:51:56,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:51:56,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:51:56,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:51:56,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:51:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:51:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1671903116, now seen corresponding path program 1 times [2021-11-02 12:51:56,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:51:56,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642626875] [2021-11-02 12:51:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:51:56,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:51:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:51:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:51:56,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:51:56,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642626875] [2021-11-02 12:51:56,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642626875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:51:56,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:51:56,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:51:56,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949309719] [2021-11-02 12:51:56,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:51:56,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:51:56,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:51:56,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:51:56,995 INFO L87 Difference]: Start difference. First operand 193 states and 240 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:51:59,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:00,549 INFO L93 Difference]: Finished difference Result 314 states and 387 transitions. [2021-11-02 12:52:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:52:00,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 12:52:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:00,550 INFO L225 Difference]: With dead ends: 314 [2021-11-02 12:52:00,550 INFO L226 Difference]: Without dead ends: 193 [2021-11-02 12:52:00,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 129.30ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:52:00,552 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 482 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3253.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.21ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3436.79ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:00,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 7.21ms Time], IncrementalHoareTripleChecker [5 Valid, 381 Invalid, 1 Unknown, 0 Unchecked, 3436.79ms Time] [2021-11-02 12:52:00,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-02 12:52:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-02 12:52:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3131868131868132) internal successors, (239), 192 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 239 transitions. [2021-11-02 12:52:00,587 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 239 transitions. Word has length 51 [2021-11-02 12:52:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:00,587 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 239 transitions. [2021-11-02 12:52:00,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 239 transitions. [2021-11-02 12:52:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 12:52:00,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:00,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:00,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 12:52:00,589 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1284348023, now seen corresponding path program 1 times [2021-11-02 12:52:00,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:00,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987913320] [2021-11-02 12:52:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:00,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:00,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:00,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987913320] [2021-11-02 12:52:00,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987913320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:00,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:00,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:52:00,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639897860] [2021-11-02 12:52:00,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:52:00,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:00,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:52:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:52:00,973 INFO L87 Difference]: Start difference. First operand 193 states and 239 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:03,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:04,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:04,801 INFO L93 Difference]: Finished difference Result 265 states and 320 transitions. [2021-11-02 12:52:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:52:04,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 12:52:04,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:04,803 INFO L225 Difference]: With dead ends: 265 [2021-11-02 12:52:04,803 INFO L226 Difference]: Without dead ends: 193 [2021-11-02 12:52:04,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 246.76ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:52:04,804 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 624 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3356.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.06ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3633.32ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:04,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 0 Invalid, 447 Unknown, 0 Unchecked, 8.06ms Time], IncrementalHoareTripleChecker [6 Valid, 440 Invalid, 1 Unknown, 0 Unchecked, 3633.32ms Time] [2021-11-02 12:52:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-02 12:52:04,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-02 12:52:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3021978021978022) internal successors, (237), 192 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 237 transitions. [2021-11-02 12:52:04,825 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 237 transitions. Word has length 57 [2021-11-02 12:52:04,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:04,826 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 237 transitions. [2021-11-02 12:52:04,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 237 transitions. [2021-11-02 12:52:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 12:52:04,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:04,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:04,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 12:52:04,828 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:04,829 INFO L85 PathProgramCache]: Analyzing trace with hash 718341164, now seen corresponding path program 1 times [2021-11-02 12:52:04,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:04,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505443788] [2021-11-02 12:52:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:04,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:05,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:05,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505443788] [2021-11-02 12:52:05,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505443788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:05,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:05,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:52:05,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576729793] [2021-11-02 12:52:05,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:52:05,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:05,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:52:05,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:52:05,512 INFO L87 Difference]: Start difference. First operand 193 states and 237 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:07,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:11,383 INFO L93 Difference]: Finished difference Result 310 states and 367 transitions. [2021-11-02 12:52:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:52:11,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-02 12:52:11,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:11,385 INFO L225 Difference]: With dead ends: 310 [2021-11-02 12:52:11,385 INFO L226 Difference]: Without dead ends: 297 [2021-11-02 12:52:11,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 271.30ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:52:11,386 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 228 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5306.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.48ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5656.85ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:11,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 0 Invalid, 1048 Unknown, 0 Unchecked, 11.48ms Time], IncrementalHoareTripleChecker [40 Valid, 1007 Invalid, 1 Unknown, 0 Unchecked, 5656.85ms Time] [2021-11-02 12:52:11,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-02 12:52:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 199. [2021-11-02 12:52:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 188 states have (on average 1.2872340425531914) internal successors, (242), 198 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:11,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 242 transitions. [2021-11-02 12:52:11,394 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 242 transitions. Word has length 63 [2021-11-02 12:52:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:11,395 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 242 transitions. [2021-11-02 12:52:11,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 242 transitions. [2021-11-02 12:52:11,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 12:52:11,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:11,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:11,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 12:52:11,399 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:11,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1235696670, now seen corresponding path program 1 times [2021-11-02 12:52:11,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:11,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967270131] [2021-11-02 12:52:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:11,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:11,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:11,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967270131] [2021-11-02 12:52:11,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967270131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:11,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:11,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:52:11,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663023817] [2021-11-02 12:52:11,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:52:11,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:11,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:52:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:52:11,751 INFO L87 Difference]: Start difference. First operand 199 states and 242 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:13,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:16,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:16,485 INFO L93 Difference]: Finished difference Result 595 states and 724 transitions. [2021-11-02 12:52:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:52:16,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 12:52:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:16,487 INFO L225 Difference]: With dead ends: 595 [2021-11-02 12:52:16,487 INFO L226 Difference]: Without dead ends: 418 [2021-11-02 12:52:16,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 135.70ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:52:16,488 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 386 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4376.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.53ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4601.56ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:16,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 0 Invalid, 863 Unknown, 0 Unchecked, 8.53ms Time], IncrementalHoareTripleChecker [27 Valid, 835 Invalid, 1 Unknown, 0 Unchecked, 4601.56ms Time] [2021-11-02 12:52:16,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-02 12:52:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 239. [2021-11-02 12:52:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 228 states have (on average 1.2850877192982457) internal successors, (293), 238 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 293 transitions. [2021-11-02 12:52:16,497 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 293 transitions. Word has length 67 [2021-11-02 12:52:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:16,497 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 293 transitions. [2021-11-02 12:52:16,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 293 transitions. [2021-11-02 12:52:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 12:52:16,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:16,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:16,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 12:52:16,499 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:16,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash -555638300, now seen corresponding path program 1 times [2021-11-02 12:52:16,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:16,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947741066] [2021-11-02 12:52:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:16,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:17,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:17,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947741066] [2021-11-02 12:52:17,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947741066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:17,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:17,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:52:17,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090006652] [2021-11-02 12:52:17,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:52:17,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:17,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:52:17,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:52:17,117 INFO L87 Difference]: Start difference. First operand 239 states and 293 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:19,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:26,685 INFO L93 Difference]: Finished difference Result 561 states and 678 transitions. [2021-11-02 12:52:26,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:52:26,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 12:52:26,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:26,688 INFO L225 Difference]: With dead ends: 561 [2021-11-02 12:52:26,688 INFO L226 Difference]: Without dead ends: 483 [2021-11-02 12:52:26,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1189.46ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:52:26,689 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1197 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7919.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.59ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8560.43ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:26,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 0 Invalid, 2141 Unknown, 0 Unchecked, 20.59ms Time], IncrementalHoareTripleChecker [69 Valid, 2071 Invalid, 1 Unknown, 0 Unchecked, 8560.43ms Time] [2021-11-02 12:52:26,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-02 12:52:26,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 259. [2021-11-02 12:52:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 248 states have (on average 1.2862903225806452) internal successors, (319), 258 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 319 transitions. [2021-11-02 12:52:26,699 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 319 transitions. Word has length 67 [2021-11-02 12:52:26,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:26,700 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 319 transitions. [2021-11-02 12:52:26,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:26,700 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 319 transitions. [2021-11-02 12:52:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 12:52:26,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:26,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:26,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 12:52:26,702 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash -813803738, now seen corresponding path program 1 times [2021-11-02 12:52:26,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:26,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621339673] [2021-11-02 12:52:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:26,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:27,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:27,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621339673] [2021-11-02 12:52:27,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621339673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:27,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:27,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:52:27,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246282317] [2021-11-02 12:52:27,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:52:27,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:52:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:52:27,483 INFO L87 Difference]: Start difference. First operand 259 states and 319 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:29,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:33,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:33,960 INFO L93 Difference]: Finished difference Result 532 states and 641 transitions. [2021-11-02 12:52:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:52:33,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 12:52:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:33,963 INFO L225 Difference]: With dead ends: 532 [2021-11-02 12:52:33,963 INFO L226 Difference]: Without dead ends: 395 [2021-11-02 12:52:33,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 965.13ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:52:33,964 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 749 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5322.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.15ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5708.82ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:33,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 11.15ms Time], IncrementalHoareTripleChecker [36 Valid, 1196 Invalid, 1 Unknown, 0 Unchecked, 5708.82ms Time] [2021-11-02 12:52:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-02 12:52:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 259. [2021-11-02 12:52:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 248 states have (on average 1.282258064516129) internal successors, (318), 258 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 318 transitions. [2021-11-02 12:52:33,973 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 318 transitions. Word has length 67 [2021-11-02 12:52:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:33,973 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 318 transitions. [2021-11-02 12:52:33,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:33,974 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 318 transitions. [2021-11-02 12:52:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 12:52:33,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:33,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:33,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 12:52:33,975 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:33,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:33,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1892815656, now seen corresponding path program 1 times [2021-11-02 12:52:33,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:33,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079452295] [2021-11-02 12:52:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:33,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:36,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:36,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079452295] [2021-11-02 12:52:36,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079452295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:36,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:36,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:52:36,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593230125] [2021-11-02 12:52:36,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:52:36,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:36,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:52:36,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:52:36,400 INFO L87 Difference]: Start difference. First operand 259 states and 318 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:39,323 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 12:52:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:43,827 INFO L93 Difference]: Finished difference Result 552 states and 681 transitions. [2021-11-02 12:52:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:52:43,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 12:52:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:43,830 INFO L225 Difference]: With dead ends: 552 [2021-11-02 12:52:43,830 INFO L226 Difference]: Without dead ends: 327 [2021-11-02 12:52:43,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 621.28ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:52:43,831 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 700 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6440.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.21ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6984.04ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:43,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 0 Invalid, 1239 Unknown, 0 Unchecked, 12.21ms Time], IncrementalHoareTripleChecker [26 Valid, 1212 Invalid, 1 Unknown, 0 Unchecked, 6984.04ms Time] [2021-11-02 12:52:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-02 12:52:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 262. [2021-11-02 12:52:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 251 states have (on average 1.2828685258964143) internal successors, (322), 261 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 322 transitions. [2021-11-02 12:52:43,840 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 322 transitions. Word has length 67 [2021-11-02 12:52:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:43,840 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 322 transitions. [2021-11-02 12:52:43,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 322 transitions. [2021-11-02 12:52:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:52:43,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:43,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:43,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 12:52:43,842 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:43,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2013763211, now seen corresponding path program 1 times [2021-11-02 12:52:43,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:43,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451762252] [2021-11-02 12:52:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:43,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:45,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:45,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451762252] [2021-11-02 12:52:45,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451762252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:45,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:45,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:52:45,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708647145] [2021-11-02 12:52:45,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:52:45,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:45,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:52:45,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:52:45,279 INFO L87 Difference]: Start difference. First operand 262 states and 322 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 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 12:52:47,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:59,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:59,385 INFO L93 Difference]: Finished difference Result 623 states and 766 transitions. [2021-11-02 12:52:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 12:52:59,386 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 12:52:59,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:59,387 INFO L225 Difference]: With dead ends: 623 [2021-11-02 12:52:59,387 INFO L226 Difference]: Without dead ends: 383 [2021-11-02 12:52:59,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1984.66ms TimeCoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2021-11-02 12:52:59,389 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 805 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 68 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11957.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.13ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12740.09ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:59,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 0 Invalid, 3653 Unknown, 0 Unchecked, 30.13ms Time], IncrementalHoareTripleChecker [68 Valid, 3584 Invalid, 1 Unknown, 0 Unchecked, 12740.09ms Time] [2021-11-02 12:52:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-02 12:52:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 273. [2021-11-02 12:52:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 262 states have (on average 1.2404580152671756) internal successors, (325), 272 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 325 transitions. [2021-11-02 12:52:59,399 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 325 transitions. Word has length 74 [2021-11-02 12:52:59,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:59,400 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 325 transitions. [2021-11-02 12:52:59,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 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 12:52:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 325 transitions. [2021-11-02 12:52:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:52:59,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:59,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:52:59,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 12:52:59,401 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:52:59,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:59,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1453063433, now seen corresponding path program 1 times [2021-11-02 12:52:59,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:59,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155646241] [2021-11-02 12:52:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:59,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:59,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:59,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155646241] [2021-11-02 12:52:59,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155646241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:59,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:59,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:52:59,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727168692] [2021-11-02 12:52:59,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:52:59,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:59,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:52:59,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:52:59,984 INFO L87 Difference]: Start difference. First operand 273 states and 325 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 12:53:02,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:09,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:09,945 INFO L93 Difference]: Finished difference Result 829 states and 987 transitions. [2021-11-02 12:53:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:53:09,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 12:53:09,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:09,947 INFO L225 Difference]: With dead ends: 829 [2021-11-02 12:53:09,947 INFO L226 Difference]: Without dead ends: 619 [2021-11-02 12:53:09,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 935.40ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:53:09,948 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 625 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8634.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.86ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9163.27ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:09,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 0 Invalid, 2546 Unknown, 0 Unchecked, 17.86ms Time], IncrementalHoareTripleChecker [41 Valid, 2504 Invalid, 1 Unknown, 0 Unchecked, 9163.27ms Time] [2021-11-02 12:53:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-02 12:53:09,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 284. [2021-11-02 12:53:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 273 states have (on average 1.2380952380952381) internal successors, (338), 283 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 338 transitions. [2021-11-02 12:53:09,961 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 338 transitions. Word has length 74 [2021-11-02 12:53:09,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:09,961 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 338 transitions. [2021-11-02 12:53:09,961 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 12:53:09,962 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 338 transitions. [2021-11-02 12:53:09,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:53:09,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:09,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:09,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 12:53:09,964 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:09,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:09,965 INFO L85 PathProgramCache]: Analyzing trace with hash -360304177, now seen corresponding path program 1 times [2021-11-02 12:53:09,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:09,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391859626] [2021-11-02 12:53:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:09,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:11,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:11,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391859626] [2021-11-02 12:53:11,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391859626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:11,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:11,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:53:11,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730469832] [2021-11-02 12:53:11,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:53:11,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:11,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:53:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:53:11,054 INFO L87 Difference]: Start difference. First operand 284 states and 338 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 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 12:53:13,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:20,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:20,328 INFO L93 Difference]: Finished difference Result 572 states and 683 transitions. [2021-11-02 12:53:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 12:53:20,329 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 12:53:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:20,330 INFO L225 Difference]: With dead ends: 572 [2021-11-02 12:53:20,330 INFO L226 Difference]: Without dead ends: 377 [2021-11-02 12:53:20,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1333.22ms TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:53:20,331 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 603 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7716.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.17ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8341.38ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:20,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 0 Invalid, 2313 Unknown, 0 Unchecked, 15.17ms Time], IncrementalHoareTripleChecker [38 Valid, 2274 Invalid, 1 Unknown, 0 Unchecked, 8341.38ms Time] [2021-11-02 12:53:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-02 12:53:20,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 274. [2021-11-02 12:53:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 263 states have (on average 1.2357414448669202) internal successors, (325), 273 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 325 transitions. [2021-11-02 12:53:20,340 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 325 transitions. Word has length 74 [2021-11-02 12:53:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:20,340 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 325 transitions. [2021-11-02 12:53:20,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 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 12:53:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 325 transitions. [2021-11-02 12:53:20,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 12:53:20,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:20,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:20,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 12:53:20,342 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:20,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:20,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1046518488, now seen corresponding path program 1 times [2021-11-02 12:53:20,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:20,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503389537] [2021-11-02 12:53:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:20,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:21,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:21,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503389537] [2021-11-02 12:53:21,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503389537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:21,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:21,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:53:21,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499169380] [2021-11-02 12:53:21,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:53:21,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:21,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:53:21,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:53:21,406 INFO L87 Difference]: Start difference. First operand 274 states and 325 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:23,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:35,017 INFO L93 Difference]: Finished difference Result 605 states and 720 transitions. [2021-11-02 12:53:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 12:53:35,018 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 12:53:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:35,019 INFO L225 Difference]: With dead ends: 605 [2021-11-02 12:53:35,019 INFO L226 Difference]: Without dead ends: 456 [2021-11-02 12:53:35,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2024.53ms TimeCoverageRelationStatistics Valid=303, Invalid=957, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 12:53:35,021 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 816 mSDsluCounter, 2224 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11257.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.78ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12005.41ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:35,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 0 Invalid, 3759 Unknown, 0 Unchecked, 26.78ms Time], IncrementalHoareTripleChecker [54 Valid, 3704 Invalid, 1 Unknown, 0 Unchecked, 12005.41ms Time] [2021-11-02 12:53:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-02 12:53:35,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 302. [2021-11-02 12:53:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 291 states have (on average 1.2302405498281788) internal successors, (358), 301 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:35,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 358 transitions. [2021-11-02 12:53:35,031 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 358 transitions. Word has length 75 [2021-11-02 12:53:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:35,031 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 358 transitions. [2021-11-02 12:53:35,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 358 transitions. [2021-11-02 12:53:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 12:53:35,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:35,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:35,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 12:53:35,033 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash -350949144, now seen corresponding path program 1 times [2021-11-02 12:53:35,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:35,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506714726] [2021-11-02 12:53:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:35,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:35,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:35,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506714726] [2021-11-02 12:53:35,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506714726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:35,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:35,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:53:35,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34802056] [2021-11-02 12:53:35,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:53:35,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:53:35,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:53:35,625 INFO L87 Difference]: Start difference. First operand 302 states and 358 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:38,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:42,466 INFO L93 Difference]: Finished difference Result 647 states and 752 transitions. [2021-11-02 12:53:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:53:42,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 12:53:42,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:42,468 INFO L225 Difference]: With dead ends: 647 [2021-11-02 12:53:42,468 INFO L226 Difference]: Without dead ends: 365 [2021-11-02 12:53:42,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 202.27ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:53:42,469 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 119 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6263.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.19ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6715.15ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:42,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 0 Invalid, 1582 Unknown, 0 Unchecked, 8.19ms Time], IncrementalHoareTripleChecker [36 Valid, 1545 Invalid, 1 Unknown, 0 Unchecked, 6715.15ms Time] [2021-11-02 12:53:42,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-02 12:53:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 302. [2021-11-02 12:53:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 291 states have (on average 1.2061855670103092) internal successors, (351), 301 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 351 transitions. [2021-11-02 12:53:42,479 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 351 transitions. Word has length 75 [2021-11-02 12:53:42,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:42,479 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 351 transitions. [2021-11-02 12:53:42,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:42,480 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 351 transitions. [2021-11-02 12:53:42,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 12:53:42,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:42,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:42,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 12:53:42,481 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:42,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash -474375862, now seen corresponding path program 1 times [2021-11-02 12:53:42,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:42,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351096080] [2021-11-02 12:53:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:42,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:42,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:42,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351096080] [2021-11-02 12:53:42,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351096080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:42,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:42,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:53:42,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67877862] [2021-11-02 12:53:42,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:53:42,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:53:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:53:42,649 INFO L87 Difference]: Start difference. First operand 302 states and 351 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:45,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:47,143 INFO L93 Difference]: Finished difference Result 551 states and 640 transitions. [2021-11-02 12:53:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:53:47,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 12:53:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:47,145 INFO L225 Difference]: With dead ends: 551 [2021-11-02 12:53:47,145 INFO L226 Difference]: Without dead ends: 252 [2021-11-02 12:53:47,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.88ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:53:47,146 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4010.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4452.25ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:47,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 674 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [18 Valid, 655 Invalid, 1 Unknown, 0 Unchecked, 4452.25ms Time] [2021-11-02 12:53:47,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-02 12:53:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 231. [2021-11-02 12:53:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 220 states have (on average 1.190909090909091) internal successors, (262), 230 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 262 transitions. [2021-11-02 12:53:47,155 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 262 transitions. Word has length 79 [2021-11-02 12:53:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:47,155 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 262 transitions. [2021-11-02 12:53:47,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 262 transitions. [2021-11-02 12:53:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 12:53:47,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:47,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:47,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 12:53:47,156 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1364907914, now seen corresponding path program 1 times [2021-11-02 12:53:47,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:47,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471367974] [2021-11-02 12:53:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:47,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:47,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:47,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471367974] [2021-11-02 12:53:47,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471367974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:47,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:47,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:53:47,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127697494] [2021-11-02 12:53:47,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:53:47,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:53:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:53:47,830 INFO L87 Difference]: Start difference. First operand 231 states and 262 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:50,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:54,013 INFO L93 Difference]: Finished difference Result 462 states and 522 transitions. [2021-11-02 12:53:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:53:54,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 12:53:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:54,014 INFO L225 Difference]: With dead ends: 462 [2021-11-02 12:53:54,014 INFO L226 Difference]: Without dead ends: 276 [2021-11-02 12:53:54,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 484.27ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:53:54,015 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 297 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5397.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.39ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5878.77ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:54,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 0 Invalid, 1241 Unknown, 0 Unchecked, 7.39ms Time], IncrementalHoareTripleChecker [36 Valid, 1204 Invalid, 1 Unknown, 0 Unchecked, 5878.77ms Time] [2021-11-02 12:53:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-02 12:53:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 250. [2021-11-02 12:53:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 239 states have (on average 1.1799163179916319) internal successors, (282), 249 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2021-11-02 12:53:54,024 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 79 [2021-11-02 12:53:54,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:54,024 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2021-11-02 12:53:54,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2021-11-02 12:53:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 12:53:54,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:54,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:54,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 12:53:54,026 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:53:54,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1084692216, now seen corresponding path program 1 times [2021-11-02 12:53:54,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:54,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184774440] [2021-11-02 12:53:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:54,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:56,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:56,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184774440] [2021-11-02 12:53:56,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184774440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:56,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:56,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:53:56,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68273739] [2021-11-02 12:53:56,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:53:56,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:56,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:53:56,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:53:56,938 INFO L87 Difference]: Start difference. First operand 250 states and 282 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:59,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:05,349 INFO L93 Difference]: Finished difference Result 539 states and 609 transitions. [2021-11-02 12:54:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:54:05,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 12:54:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:05,351 INFO L225 Difference]: With dead ends: 539 [2021-11-02 12:54:05,351 INFO L226 Difference]: Without dead ends: 388 [2021-11-02 12:54:05,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1349.79ms TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:54:05,352 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 899 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6968.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.97ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7532.11ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:05,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 0 Invalid, 1815 Unknown, 0 Unchecked, 13.97ms Time], IncrementalHoareTripleChecker [44 Valid, 1770 Invalid, 1 Unknown, 0 Unchecked, 7532.11ms Time] [2021-11-02 12:54:05,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-02 12:54:05,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 346. [2021-11-02 12:54:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 335 states have (on average 1.1970149253731344) internal successors, (401), 345 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 401 transitions. [2021-11-02 12:54:05,364 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 401 transitions. Word has length 79 [2021-11-02 12:54:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:05,365 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 401 transitions. [2021-11-02 12:54:05,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 401 transitions. [2021-11-02 12:54:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 12:54:05,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:05,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:05,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 12:54:05,366 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:05,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1500436263, now seen corresponding path program 1 times [2021-11-02 12:54:05,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:05,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280267388] [2021-11-02 12:54:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:05,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:05,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:05,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280267388] [2021-11-02 12:54:05,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280267388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:05,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:05,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:54:05,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771104130] [2021-11-02 12:54:05,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:54:05,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:54:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:54:05,715 INFO L87 Difference]: Start difference. First operand 346 states and 401 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 12:54:08,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:12,243 INFO L93 Difference]: Finished difference Result 773 states and 890 transitions. [2021-11-02 12:54:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:54:12,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 12:54:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:12,247 INFO L225 Difference]: With dead ends: 773 [2021-11-02 12:54:12,247 INFO L226 Difference]: Without dead ends: 573 [2021-11-02 12:54:12,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 270.69ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:54:12,249 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5811.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.74ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6311.93ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:12,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 1207 Unknown, 0 Unchecked, 7.74ms Time], IncrementalHoareTripleChecker [15 Valid, 1191 Invalid, 1 Unknown, 0 Unchecked, 6311.93ms Time] [2021-11-02 12:54:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-02 12:54:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 346. [2021-11-02 12:54:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 335 states have (on average 1.1940298507462686) internal successors, (400), 345 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 400 transitions. [2021-11-02 12:54:12,260 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 400 transitions. Word has length 82 [2021-11-02 12:54:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:12,260 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 400 transitions. [2021-11-02 12:54:12,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 12:54:12,261 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 400 transitions. [2021-11-02 12:54:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 12:54:12,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:12,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:12,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 12:54:12,262 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:12,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash -832956375, now seen corresponding path program 1 times [2021-11-02 12:54:12,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:12,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304753195] [2021-11-02 12:54:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:12,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:13,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:13,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304753195] [2021-11-02 12:54:13,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304753195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:13,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:13,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:54:13,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101595870] [2021-11-02 12:54:13,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:54:13,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:13,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:54:13,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:54:13,014 INFO L87 Difference]: Start difference. First operand 346 states and 400 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:15,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:21,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:21,502 INFO L93 Difference]: Finished difference Result 697 states and 793 transitions. [2021-11-02 12:54:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 12:54:21,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 12:54:21,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:21,504 INFO L225 Difference]: With dead ends: 697 [2021-11-02 12:54:21,504 INFO L226 Difference]: Without dead ends: 546 [2021-11-02 12:54:21,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1188.92ms TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-11-02 12:54:21,505 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 473 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6967.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.01ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7562.43ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:21,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 0 Invalid, 2089 Unknown, 0 Unchecked, 11.01ms Time], IncrementalHoareTripleChecker [37 Valid, 2051 Invalid, 1 Unknown, 0 Unchecked, 7562.43ms Time] [2021-11-02 12:54:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-02 12:54:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 356. [2021-11-02 12:54:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 345 states have (on average 1.1884057971014492) internal successors, (410), 355 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 410 transitions. [2021-11-02 12:54:21,518 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 410 transitions. Word has length 82 [2021-11-02 12:54:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:21,518 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 410 transitions. [2021-11-02 12:54:21,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 410 transitions. [2021-11-02 12:54:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 12:54:21,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:21,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:21,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 12:54:21,520 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1012410791, now seen corresponding path program 1 times [2021-11-02 12:54:21,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:21,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418067571] [2021-11-02 12:54:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:21,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:22,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:22,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418067571] [2021-11-02 12:54:22,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418067571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:22,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:22,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:54:22,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596827496] [2021-11-02 12:54:22,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:54:22,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:22,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:54:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:54:22,433 INFO L87 Difference]: Start difference. First operand 356 states and 410 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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 12:54:25,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:30,024 INFO L93 Difference]: Finished difference Result 628 states and 728 transitions. [2021-11-02 12:54:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:54:30,025 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 12:54:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:30,026 INFO L225 Difference]: With dead ends: 628 [2021-11-02 12:54:30,026 INFO L226 Difference]: Without dead ends: 357 [2021-11-02 12:54:30,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 981.34ms TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:54:30,027 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 501 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6437.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.64ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6963.36ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:30,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 0 Invalid, 1909 Unknown, 0 Unchecked, 10.64ms Time], IncrementalHoareTripleChecker [53 Valid, 1855 Invalid, 1 Unknown, 0 Unchecked, 6963.36ms Time] [2021-11-02 12:54:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-02 12:54:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 329. [2021-11-02 12:54:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 318 states have (on average 1.1886792452830188) internal successors, (378), 328 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 378 transitions. [2021-11-02 12:54:30,039 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 378 transitions. Word has length 82 [2021-11-02 12:54:30,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:30,039 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 378 transitions. [2021-11-02 12:54:30,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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 12:54:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 378 transitions. [2021-11-02 12:54:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:54:30,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:30,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:30,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 12:54:30,041 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash 121635765, now seen corresponding path program 1 times [2021-11-02 12:54:30,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:30,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265042799] [2021-11-02 12:54:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:30,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:30,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:30,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265042799] [2021-11-02 12:54:30,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265042799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:30,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:30,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:54:30,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280502343] [2021-11-02 12:54:30,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:54:30,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:54:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:54:30,415 INFO L87 Difference]: Start difference. First operand 329 states and 378 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:32,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:35,983 INFO L93 Difference]: Finished difference Result 644 states and 752 transitions. [2021-11-02 12:54:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:54:35,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 12:54:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:35,986 INFO L225 Difference]: With dead ends: 644 [2021-11-02 12:54:35,986 INFO L226 Difference]: Without dead ends: 529 [2021-11-02 12:54:35,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 323.37ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:54:35,987 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 575 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4879.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.44ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5344.19ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:35,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 0 Invalid, 1162 Unknown, 0 Unchecked, 6.44ms Time], IncrementalHoareTripleChecker [24 Valid, 1137 Invalid, 1 Unknown, 0 Unchecked, 5344.19ms Time] [2021-11-02 12:54:35,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-02 12:54:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 359. [2021-11-02 12:54:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 348 states have (on average 1.1896551724137931) internal successors, (414), 358 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:35,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 414 transitions. [2021-11-02 12:54:35,999 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 414 transitions. Word has length 85 [2021-11-02 12:54:36,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:36,000 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 414 transitions. [2021-11-02 12:54:36,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 414 transitions. [2021-11-02 12:54:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:54:36,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:36,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:36,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 12:54:36,001 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:36,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash -136529673, now seen corresponding path program 1 times [2021-11-02 12:54:36,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:36,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150462448] [2021-11-02 12:54:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:36,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:36,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:36,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150462448] [2021-11-02 12:54:36,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150462448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:36,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:36,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:54:36,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200812747] [2021-11-02 12:54:36,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:54:36,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:36,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:54:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:54:36,456 INFO L87 Difference]: Start difference. First operand 359 states and 414 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:39,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:41,816 INFO L93 Difference]: Finished difference Result 713 states and 838 transitions. [2021-11-02 12:54:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:54:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 12:54:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:41,818 INFO L225 Difference]: With dead ends: 713 [2021-11-02 12:54:41,818 INFO L226 Difference]: Without dead ends: 519 [2021-11-02 12:54:41,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 220.49ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:54:41,819 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 324 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4777.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5226.92ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:41,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 0 Invalid, 933 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [15 Valid, 917 Invalid, 1 Unknown, 0 Unchecked, 5226.92ms Time] [2021-11-02 12:54:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-02 12:54:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 359. [2021-11-02 12:54:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 348 states have (on average 1.1839080459770115) internal successors, (412), 358 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 412 transitions. [2021-11-02 12:54:41,830 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 412 transitions. Word has length 85 [2021-11-02 12:54:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:41,831 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 412 transitions. [2021-11-02 12:54:41,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 412 transitions. [2021-11-02 12:54:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:54:41,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:41,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:41,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 12:54:41,832 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1724877575, now seen corresponding path program 1 times [2021-11-02 12:54:41,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:41,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695820612] [2021-11-02 12:54:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:41,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:44,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:44,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695820612] [2021-11-02 12:54:44,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695820612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:44,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:44,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:54:44,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120329754] [2021-11-02 12:54:44,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:54:44,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:54:44,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:54:44,620 INFO L87 Difference]: Start difference. First operand 359 states and 412 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:46,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:53,945 INFO L93 Difference]: Finished difference Result 579 states and 666 transitions. [2021-11-02 12:54:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:54:53,945 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 12:54:53,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:53,947 INFO L225 Difference]: With dead ends: 579 [2021-11-02 12:54:53,947 INFO L226 Difference]: Without dead ends: 444 [2021-11-02 12:54:53,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1680.62ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:54:53,948 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1062 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7559.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.56ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8145.16ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:53,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 0 Invalid, 2439 Unknown, 0 Unchecked, 17.56ms Time], IncrementalHoareTripleChecker [52 Valid, 2386 Invalid, 1 Unknown, 0 Unchecked, 8145.16ms Time] [2021-11-02 12:54:53,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-02 12:54:53,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 355. [2021-11-02 12:54:53,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 344 states have (on average 1.1744186046511629) internal successors, (404), 354 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 12:54:53,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 404 transitions. [2021-11-02 12:54:53,959 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 404 transitions. Word has length 85 [2021-11-02 12:54:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:53,959 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 404 transitions. [2021-11-02 12:54:53,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 404 transitions. [2021-11-02 12:54:53,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:54:53,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:53,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:53,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 12:54:53,961 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:54:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1137079539, now seen corresponding path program 1 times [2021-11-02 12:54:53,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:53,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616686021] [2021-11-02 12:54:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:53,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:54,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:54,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616686021] [2021-11-02 12:54:54,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616686021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:54,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:54,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:54:54,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079308981] [2021-11-02 12:54:54,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:54:54,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:54:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:54:54,481 INFO L87 Difference]: Start difference. First operand 355 states and 404 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:56,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:02,005 INFO L93 Difference]: Finished difference Result 727 states and 845 transitions. [2021-11-02 12:55:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:55:02,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 12:55:02,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:02,008 INFO L225 Difference]: With dead ends: 727 [2021-11-02 12:55:02,008 INFO L226 Difference]: Without dead ends: 622 [2021-11-02 12:55:02,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 848.50ms TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:55:02,009 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 525 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6330.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.82ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6818.80ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:02,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 0 Invalid, 1763 Unknown, 0 Unchecked, 12.82ms Time], IncrementalHoareTripleChecker [36 Valid, 1726 Invalid, 1 Unknown, 0 Unchecked, 6818.80ms Time] [2021-11-02 12:55:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-02 12:55:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 372. [2021-11-02 12:55:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 361 states have (on average 1.1745152354570638) internal successors, (424), 371 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 424 transitions. [2021-11-02 12:55:02,022 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 424 transitions. Word has length 85 [2021-11-02 12:55:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:02,022 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 424 transitions. [2021-11-02 12:55:02,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:02,023 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 424 transitions. [2021-11-02 12:55:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:55:02,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:02,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:02,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 12:55:02,024 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1817137909, now seen corresponding path program 1 times [2021-11-02 12:55:02,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:02,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658405179] [2021-11-02 12:55:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:02,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:05,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:05,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658405179] [2021-11-02 12:55:05,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658405179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:05,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:05,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:55:05,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331714277] [2021-11-02 12:55:05,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:55:05,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:05,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:55:05,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:55:05,537 INFO L87 Difference]: Start difference. First operand 372 states and 424 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:08,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:15,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:15,057 INFO L93 Difference]: Finished difference Result 575 states and 657 transitions. [2021-11-02 12:55:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:55:15,057 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 12:55:15,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:15,059 INFO L225 Difference]: With dead ends: 575 [2021-11-02 12:55:15,059 INFO L226 Difference]: Without dead ends: 459 [2021-11-02 12:55:15,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1789.49ms TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2021-11-02 12:55:15,060 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1102 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7572.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.48ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8208.18ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:15,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 0 Invalid, 2041 Unknown, 0 Unchecked, 16.48ms Time], IncrementalHoareTripleChecker [89 Valid, 1951 Invalid, 1 Unknown, 0 Unchecked, 8208.18ms Time] [2021-11-02 12:55:15,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-02 12:55:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 390. [2021-11-02 12:55:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 379 states have (on average 1.1688654353562005) internal successors, (443), 389 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 443 transitions. [2021-11-02 12:55:15,073 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 443 transitions. Word has length 85 [2021-11-02 12:55:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:15,074 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 443 transitions. [2021-11-02 12:55:15,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 443 transitions. [2021-11-02 12:55:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:55:15,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:15,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:15,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 12:55:15,075 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:15,076 INFO L85 PathProgramCache]: Analyzing trace with hash 353688179, now seen corresponding path program 1 times [2021-11-02 12:55:15,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:15,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488687212] [2021-11-02 12:55:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:15,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:15,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:15,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488687212] [2021-11-02 12:55:15,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488687212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:15,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:15,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:55:15,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339946483] [2021-11-02 12:55:15,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:55:15,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:55:15,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:55:15,833 INFO L87 Difference]: Start difference. First operand 390 states and 443 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:18,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:22,769 INFO L93 Difference]: Finished difference Result 663 states and 755 transitions. [2021-11-02 12:55:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:55:22,769 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 12:55:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:22,771 INFO L225 Difference]: With dead ends: 663 [2021-11-02 12:55:22,771 INFO L226 Difference]: Without dead ends: 473 [2021-11-02 12:55:22,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1240.97ms TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:55:22,772 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 866 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5481.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.75ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5982.37ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:22,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 0 Invalid, 1374 Unknown, 0 Unchecked, 10.75ms Time], IncrementalHoareTripleChecker [64 Valid, 1309 Invalid, 1 Unknown, 0 Unchecked, 5982.37ms Time] [2021-11-02 12:55:22,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-02 12:55:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 408. [2021-11-02 12:55:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 397 states have (on average 1.1612090680100755) internal successors, (461), 407 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 461 transitions. [2021-11-02 12:55:22,786 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 461 transitions. Word has length 85 [2021-11-02 12:55:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:22,786 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 461 transitions. [2021-11-02 12:55:22,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 461 transitions. [2021-11-02 12:55:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:55:22,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:22,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:22,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 12:55:22,788 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1192781619, now seen corresponding path program 1 times [2021-11-02 12:55:22,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:22,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318654150] [2021-11-02 12:55:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:22,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:26,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:26,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318654150] [2021-11-02 12:55:26,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318654150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:26,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:26,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-02 12:55:26,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082510702] [2021-11-02 12:55:26,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 12:55:26,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 12:55:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-11-02 12:55:26,840 INFO L87 Difference]: Start difference. First operand 408 states and 461 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:29,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:47,748 INFO L93 Difference]: Finished difference Result 693 states and 769 transitions. [2021-11-02 12:55:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-02 12:55:47,748 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 12:55:47,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:47,750 INFO L225 Difference]: With dead ends: 693 [2021-11-02 12:55:47,750 INFO L226 Difference]: Without dead ends: 627 [2021-11-02 12:55:47,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 5488.14ms TimeCoverageRelationStatistics Valid=608, Invalid=2584, Unknown=0, NotChecked=0, Total=3192 [2021-11-02 12:55:47,751 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1253 mSDsluCounter, 3700 mSDsCounter, 0 mSdLazyCounter, 5982 mSolverCounterSat, 101 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15760.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.41ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 5982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16704.80ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:47,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 0 Invalid, 6084 Unknown, 0 Unchecked, 40.41ms Time], IncrementalHoareTripleChecker [101 Valid, 5982 Invalid, 1 Unknown, 0 Unchecked, 16704.80ms Time] [2021-11-02 12:55:47,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-11-02 12:55:47,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 408. [2021-11-02 12:55:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 397 states have (on average 1.1612090680100755) internal successors, (461), 407 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 461 transitions. [2021-11-02 12:55:47,766 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 461 transitions. Word has length 85 [2021-11-02 12:55:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:47,766 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 461 transitions. [2021-11-02 12:55:47,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 461 transitions. [2021-11-02 12:55:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 12:55:47,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:47,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:47,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 12:55:47,768 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:55:47,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash -395566283, now seen corresponding path program 1 times [2021-11-02 12:55:47,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:47,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937848310] [2021-11-02 12:55:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:47,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:51,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:51,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937848310] [2021-11-02 12:55:51,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937848310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:51,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:51,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 12:55:51,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202094697] [2021-11-02 12:55:51,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 12:55:51,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:51,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 12:55:51,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:55:51,472 INFO L87 Difference]: Start difference. First operand 408 states and 461 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:54,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:04,335 INFO L93 Difference]: Finished difference Result 543 states and 605 transitions. [2021-11-02 12:56:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 12:56:04,335 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-02 12:56:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:04,337 INFO L225 Difference]: With dead ends: 543 [2021-11-02 12:56:04,337 INFO L226 Difference]: Without dead ends: 477 [2021-11-02 12:56:04,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3049.80ms TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2021-11-02 12:56:04,339 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1116 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9780.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.79ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10484.34ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:04,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 0 Invalid, 2660 Unknown, 0 Unchecked, 26.79ms Time], IncrementalHoareTripleChecker [85 Valid, 2574 Invalid, 1 Unknown, 0 Unchecked, 10484.34ms Time] [2021-11-02 12:56:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-02 12:56:04,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 398. [2021-11-02 12:56:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 387 states have (on average 1.1602067183462532) internal successors, (449), 397 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 449 transitions. [2021-11-02 12:56:04,355 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 449 transitions. Word has length 85 [2021-11-02 12:56:04,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:04,355 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 449 transitions. [2021-11-02 12:56:04,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 449 transitions. [2021-11-02 12:56:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:56:04,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:04,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:04,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 12:56:04,357 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:04,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1366130194, now seen corresponding path program 1 times [2021-11-02 12:56:04,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:04,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700117445] [2021-11-02 12:56:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:04,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:04,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:04,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700117445] [2021-11-02 12:56:04,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700117445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:04,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:04,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:56:04,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529659525] [2021-11-02 12:56:04,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:56:04,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:04,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:56:04,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:56:04,944 INFO L87 Difference]: Start difference. First operand 398 states and 449 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:07,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:10,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:10,690 INFO L93 Difference]: Finished difference Result 560 states and 636 transitions. [2021-11-02 12:56:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:56:10,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:56:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:10,692 INFO L225 Difference]: With dead ends: 560 [2021-11-02 12:56:10,692 INFO L226 Difference]: Without dead ends: 543 [2021-11-02 12:56:10,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 493.08ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:56:10,693 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 237 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4955.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.96ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5397.27ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:10,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 0 Invalid, 1466 Unknown, 0 Unchecked, 6.96ms Time], IncrementalHoareTripleChecker [88 Valid, 1377 Invalid, 1 Unknown, 0 Unchecked, 5397.27ms Time] [2021-11-02 12:56:10,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-02 12:56:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 414. [2021-11-02 12:56:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 403 states have (on average 1.15136476426799) internal successors, (464), 413 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 464 transitions. [2021-11-02 12:56:10,710 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 464 transitions. Word has length 87 [2021-11-02 12:56:10,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:10,710 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 464 transitions. [2021-11-02 12:56:10,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:10,710 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 464 transitions. [2021-11-02 12:56:10,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:56:10,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:10,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:10,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 12:56:10,712 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2119490476, now seen corresponding path program 1 times [2021-11-02 12:56:10,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:10,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400568459] [2021-11-02 12:56:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:10,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:11,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:11,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400568459] [2021-11-02 12:56:11,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400568459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:11,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:11,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:56:11,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114251004] [2021-11-02 12:56:11,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:56:11,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:11,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:56:11,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:56:11,007 INFO L87 Difference]: Start difference. First operand 414 states and 464 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:13,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:17,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:17,552 INFO L93 Difference]: Finished difference Result 680 states and 775 transitions. [2021-11-02 12:56:17,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:56:17,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:56:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:17,554 INFO L225 Difference]: With dead ends: 680 [2021-11-02 12:56:17,554 INFO L226 Difference]: Without dead ends: 568 [2021-11-02 12:56:17,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 304.24ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:56:17,555 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 422 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5751.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.46ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6294.92ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:17,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 0 Invalid, 1136 Unknown, 0 Unchecked, 9.46ms Time], IncrementalHoareTripleChecker [22 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 6294.92ms Time] [2021-11-02 12:56:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-02 12:56:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 426. [2021-11-02 12:56:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 415 states have (on average 1.1493975903614457) internal successors, (477), 425 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 477 transitions. [2021-11-02 12:56:17,568 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 477 transitions. Word has length 87 [2021-11-02 12:56:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:17,568 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 477 transitions. [2021-11-02 12:56:17,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 477 transitions. [2021-11-02 12:56:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:56:17,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:17,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:17,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 12:56:17,570 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:17,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:17,570 INFO L85 PathProgramCache]: Analyzing trace with hash -185385492, now seen corresponding path program 1 times [2021-11-02 12:56:17,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:17,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356185229] [2021-11-02 12:56:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:17,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:22,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:22,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356185229] [2021-11-02 12:56:22,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356185229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:22,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:22,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-02 12:56:22,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717163268] [2021-11-02 12:56:22,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 12:56:22,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 12:56:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:56:22,793 INFO L87 Difference]: Start difference. First operand 426 states and 477 transitions. Second operand has 24 states, 24 states have (on average 3.625) internal successors, (87), 24 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:25,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:53,996 INFO L93 Difference]: Finished difference Result 750 states and 835 transitions. [2021-11-02 12:56:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-02 12:56:53,997 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.625) internal successors, (87), 24 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:56:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:53,999 INFO L225 Difference]: With dead ends: 750 [2021-11-02 12:56:53,999 INFO L226 Difference]: Without dead ends: 746 [2021-11-02 12:56:54,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 12138.80ms TimeCoverageRelationStatistics Valid=793, Invalid=5059, Unknown=0, NotChecked=0, Total=5852 [2021-11-02 12:56:54,001 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1137 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 5588 mSolverCounterSat, 338 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19463.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.24ms SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 5588 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20692.63ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:54,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 0 Invalid, 5927 Unknown, 0 Unchecked, 60.24ms Time], IncrementalHoareTripleChecker [338 Valid, 5588 Invalid, 1 Unknown, 0 Unchecked, 20692.63ms Time] [2021-11-02 12:56:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-02 12:56:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 451. [2021-11-02 12:56:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 440 states have (on average 1.1477272727272727) internal successors, (505), 450 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 505 transitions. [2021-11-02 12:56:54,022 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 505 transitions. Word has length 87 [2021-11-02 12:56:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:54,023 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 505 transitions. [2021-11-02 12:56:54,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.625) internal successors, (87), 24 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 505 transitions. [2021-11-02 12:56:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:56:54,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:54,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:54,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 12:56:54,025 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:56:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:54,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1174403238, now seen corresponding path program 1 times [2021-11-02 12:56:54,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:54,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258049714] [2021-11-02 12:56:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:54,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:54,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:54,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258049714] [2021-11-02 12:56:54,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258049714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:54,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:54,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:56:54,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007729071] [2021-11-02 12:56:54,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:56:54,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:56:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:56:54,770 INFO L87 Difference]: Start difference. First operand 451 states and 505 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:57,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:00,939 INFO L93 Difference]: Finished difference Result 673 states and 759 transitions. [2021-11-02 12:57:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 12:57:00,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 12:57:00,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:00,945 INFO L225 Difference]: With dead ends: 673 [2021-11-02 12:57:00,945 INFO L226 Difference]: Without dead ends: 430 [2021-11-02 12:57:00,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 647.78ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:57:00,947 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 545 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5283.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.61ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5752.93ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:00,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 0 Invalid, 1413 Unknown, 0 Unchecked, 7.61ms Time], IncrementalHoareTripleChecker [27 Valid, 1385 Invalid, 1 Unknown, 0 Unchecked, 5752.93ms Time] [2021-11-02 12:57:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-02 12:57:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 417. [2021-11-02 12:57:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 406 states have (on average 1.145320197044335) internal successors, (465), 416 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 465 transitions. [2021-11-02 12:57:00,965 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 465 transitions. Word has length 88 [2021-11-02 12:57:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:00,965 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 465 transitions. [2021-11-02 12:57:00,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 465 transitions. [2021-11-02 12:57:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:57:00,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:00,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:00,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 12:57:00,967 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:00,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:00,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1699629160, now seen corresponding path program 1 times [2021-11-02 12:57:00,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:00,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777920280] [2021-11-02 12:57:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:00,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:04,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:04,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777920280] [2021-11-02 12:57:04,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777920280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:04,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:04,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 12:57:04,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001594077] [2021-11-02 12:57:04,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 12:57:04,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 12:57:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:57:04,033 INFO L87 Difference]: Start difference. First operand 417 states and 465 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:06,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:14,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:14,822 INFO L93 Difference]: Finished difference Result 613 states and 682 transitions. [2021-11-02 12:57:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:57:14,822 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 12:57:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:14,824 INFO L225 Difference]: With dead ends: 613 [2021-11-02 12:57:14,824 INFO L226 Difference]: Without dead ends: 506 [2021-11-02 12:57:14,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2167.02ms TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2021-11-02 12:57:14,824 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 867 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8564.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.87ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9256.06ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:14,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 0 Invalid, 1948 Unknown, 0 Unchecked, 21.87ms Time], IncrementalHoareTripleChecker [56 Valid, 1891 Invalid, 1 Unknown, 0 Unchecked, 9256.06ms Time] [2021-11-02 12:57:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-02 12:57:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 416. [2021-11-02 12:57:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 405 states have (on average 1.1407407407407408) internal successors, (462), 415 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 462 transitions. [2021-11-02 12:57:14,844 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 462 transitions. Word has length 88 [2021-11-02 12:57:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:14,845 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 462 transitions. [2021-11-02 12:57:14,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 462 transitions. [2021-11-02 12:57:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:57:14,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:14,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:14,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 12:57:14,846 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:14,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash 904162516, now seen corresponding path program 1 times [2021-11-02 12:57:14,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:14,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918680246] [2021-11-02 12:57:14,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:14,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:20,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:20,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918680246] [2021-11-02 12:57:20,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918680246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:20,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:20,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-02 12:57:20,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812986475] [2021-11-02 12:57:20,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 12:57:20,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:20,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 12:57:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:57:20,475 INFO L87 Difference]: Start difference. First operand 416 states and 462 transitions. Second operand has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:23,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:40,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:40,616 INFO L93 Difference]: Finished difference Result 1010 states and 1141 transitions. [2021-11-02 12:57:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-02 12:57:40,617 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 12:57:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:40,619 INFO L225 Difference]: With dead ends: 1010 [2021-11-02 12:57:40,619 INFO L226 Difference]: Without dead ends: 937 [2021-11-02 12:57:40,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 8679.07ms TimeCoverageRelationStatistics Valid=899, Invalid=2181, Unknown=0, NotChecked=0, Total=3080 [2021-11-02 12:57:40,621 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2780 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 165 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11782.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.80ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12620.13ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:40,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 0 Invalid, 3823 Unknown, 0 Unchecked, 33.80ms Time], IncrementalHoareTripleChecker [165 Valid, 3657 Invalid, 1 Unknown, 0 Unchecked, 12620.13ms Time] [2021-11-02 12:57:40,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-02 12:57:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 524. [2021-11-02 12:57:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 513 states have (on average 1.1734892787524367) internal successors, (602), 523 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 602 transitions. [2021-11-02 12:57:40,657 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 602 transitions. Word has length 88 [2021-11-02 12:57:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:40,658 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 602 transitions. [2021-11-02 12:57:40,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:40,658 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 602 transitions. [2021-11-02 12:57:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:57:40,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:40,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:40,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 12:57:40,659 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1584220886, now seen corresponding path program 1 times [2021-11-02 12:57:40,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:40,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706870362] [2021-11-02 12:57:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:40,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:47,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:47,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706870362] [2021-11-02 12:57:47,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706870362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:47,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:47,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 12:57:47,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374464901] [2021-11-02 12:57:47,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 12:57:47,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 12:57:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:57:47,148 INFO L87 Difference]: Start difference. First operand 524 states and 602 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:49,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:54,988 INFO L93 Difference]: Finished difference Result 734 states and 844 transitions. [2021-11-02 12:57:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:57:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 12:57:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:54,990 INFO L225 Difference]: With dead ends: 734 [2021-11-02 12:57:54,991 INFO L226 Difference]: Without dead ends: 608 [2021-11-02 12:57:54,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1436.56ms TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-02 12:57:54,991 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 594 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6383.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.76ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6925.36ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:54,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 0 Invalid, 1815 Unknown, 0 Unchecked, 11.76ms Time], IncrementalHoareTripleChecker [74 Valid, 1740 Invalid, 1 Unknown, 0 Unchecked, 6925.36ms Time] [2021-11-02 12:57:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-02 12:57:55,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 525. [2021-11-02 12:57:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 514 states have (on average 1.1692607003891051) internal successors, (601), 524 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 601 transitions. [2021-11-02 12:57:55,017 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 601 transitions. Word has length 88 [2021-11-02 12:57:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:55,018 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 601 transitions. [2021-11-02 12:57:55,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 601 transitions. [2021-11-02 12:57:55,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:57:55,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:55,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:55,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 12:57:55,020 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:57:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash -684185386, now seen corresponding path program 1 times [2021-11-02 12:57:55,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:55,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777329416] [2021-11-02 12:57:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:55,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:59,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:59,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777329416] [2021-11-02 12:57:59,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777329416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:59,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:59,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-02 12:57:59,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366021353] [2021-11-02 12:57:59,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 12:57:59,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 12:57:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:57:59,068 INFO L87 Difference]: Start difference. First operand 525 states and 601 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:01,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:06,970 INFO L93 Difference]: Finished difference Result 791 states and 912 transitions. [2021-11-02 12:58:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 12:58:06,971 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 12:58:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:06,973 INFO L225 Difference]: With dead ends: 791 [2021-11-02 12:58:06,973 INFO L226 Difference]: Without dead ends: 718 [2021-11-02 12:58:06,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1628.59ms TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:58:06,973 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1113 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6373.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.12ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6914.78ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:06,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1113 Valid, 0 Invalid, 1749 Unknown, 0 Unchecked, 13.12ms Time], IncrementalHoareTripleChecker [60 Valid, 1688 Invalid, 1 Unknown, 0 Unchecked, 6914.78ms Time] [2021-11-02 12:58:06,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-02 12:58:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 525. [2021-11-02 12:58:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 514 states have (on average 1.1673151750972763) internal successors, (600), 524 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 600 transitions. [2021-11-02 12:58:06,993 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 600 transitions. Word has length 88 [2021-11-02 12:58:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:06,994 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 600 transitions. [2021-11-02 12:58:06,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:06,994 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 600 transitions. [2021-11-02 12:58:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 12:58:06,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:06,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:06,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 12:58:06,995 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1624530765, now seen corresponding path program 1 times [2021-11-02 12:58:06,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:06,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760313134] [2021-11-02 12:58:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:06,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:12,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:12,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760313134] [2021-11-02 12:58:12,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760313134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:12,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:12,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-02 12:58:12,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310726121] [2021-11-02 12:58:12,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 12:58:12,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 12:58:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:58:12,475 INFO L87 Difference]: Start difference. First operand 525 states and 600 transitions. Second operand has 22 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:14,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:30,123 INFO L93 Difference]: Finished difference Result 715 states and 811 transitions. [2021-11-02 12:58:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 12:58:30,124 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 12:58:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:30,125 INFO L225 Difference]: With dead ends: 715 [2021-11-02 12:58:30,125 INFO L226 Difference]: Without dead ends: 535 [2021-11-02 12:58:30,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 3568.11ms TimeCoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 12:58:30,126 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 763 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14171.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.07ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15089.39ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:30,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 0 Invalid, 3990 Unknown, 0 Unchecked, 41.07ms Time], IncrementalHoareTripleChecker [62 Valid, 3927 Invalid, 1 Unknown, 0 Unchecked, 15089.39ms Time] [2021-11-02 12:58:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-02 12:58:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 470. [2021-11-02 12:58:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 459 states have (on average 1.1481481481481481) internal successors, (527), 469 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 527 transitions. [2021-11-02 12:58:30,146 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 527 transitions. Word has length 90 [2021-11-02 12:58:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:30,146 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 527 transitions. [2021-11-02 12:58:30,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 527 transitions. [2021-11-02 12:58:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 12:58:30,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:30,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:30,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 12:58:30,148 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash -64412977, now seen corresponding path program 1 times [2021-11-02 12:58:30,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:30,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032554188] [2021-11-02 12:58:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:30,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:34,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:34,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032554188] [2021-11-02 12:58:34,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032554188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:34,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:34,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:58:34,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092835514] [2021-11-02 12:58:34,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:58:34,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:34,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:58:34,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:58:34,154 INFO L87 Difference]: Start difference. First operand 470 states and 527 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:36,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:47,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:47,018 INFO L93 Difference]: Finished difference Result 738 states and 833 transitions. [2021-11-02 12:58:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-02 12:58:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 12:58:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:47,020 INFO L225 Difference]: With dead ends: 738 [2021-11-02 12:58:47,020 INFO L226 Difference]: Without dead ends: 734 [2021-11-02 12:58:47,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 5346.30ms TimeCoverageRelationStatistics Valid=551, Invalid=2871, Unknown=0, NotChecked=0, Total=3422 [2021-11-02 12:58:47,022 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1058 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 178 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7594.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.30ms SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8094.88ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:47,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 0 Invalid, 2564 Unknown, 0 Unchecked, 20.30ms Time], IncrementalHoareTripleChecker [178 Valid, 2385 Invalid, 1 Unknown, 0 Unchecked, 8094.88ms Time] [2021-11-02 12:58:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-11-02 12:58:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 444. [2021-11-02 12:58:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 434 states have (on average 1.152073732718894) internal successors, (500), 443 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 500 transitions. [2021-11-02 12:58:47,038 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 500 transitions. Word has length 90 [2021-11-02 12:58:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:47,038 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 500 transitions. [2021-11-02 12:58:47,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 500 transitions. [2021-11-02 12:58:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 12:58:47,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:47,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:47,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 12:58:47,040 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1192526857, now seen corresponding path program 1 times [2021-11-02 12:58:47,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:47,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944039180] [2021-11-02 12:58:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:47,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:47,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:47,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944039180] [2021-11-02 12:58:47,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944039180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:47,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:47,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:58:47,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268985373] [2021-11-02 12:58:47,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:58:47,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:47,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:58:47,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:58:47,274 INFO L87 Difference]: Start difference. First operand 444 states and 500 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:49,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:51,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:51,762 INFO L93 Difference]: Finished difference Result 584 states and 662 transitions. [2021-11-02 12:58:51,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:58:51,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 12:58:51,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:51,763 INFO L225 Difference]: With dead ends: 584 [2021-11-02 12:58:51,763 INFO L226 Difference]: Without dead ends: 516 [2021-11-02 12:58:51,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.34ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:58:51,764 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 101 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3977.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4378.37ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:51,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 0 Invalid, 802 Unknown, 0 Unchecked, 4.33ms Time], IncrementalHoareTripleChecker [2 Valid, 799 Invalid, 1 Unknown, 0 Unchecked, 4378.37ms Time] [2021-11-02 12:58:51,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-02 12:58:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 444. [2021-11-02 12:58:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 434 states have (on average 1.1428571428571428) internal successors, (496), 443 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 496 transitions. [2021-11-02 12:58:51,782 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 496 transitions. Word has length 92 [2021-11-02 12:58:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:51,782 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 496 transitions. [2021-11-02 12:58:51,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 496 transitions. [2021-11-02 12:58:51,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 12:58:51,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:51,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:51,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 12:58:51,783 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1685477897, now seen corresponding path program 1 times [2021-11-02 12:58:51,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:51,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435921052] [2021-11-02 12:58:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:51,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:52,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:52,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435921052] [2021-11-02 12:58:52,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435921052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:52,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:52,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:58:52,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588725391] [2021-11-02 12:58:52,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:58:52,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:58:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:58:52,138 INFO L87 Difference]: Start difference. First operand 444 states and 496 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:54,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:56,902 INFO L93 Difference]: Finished difference Result 478 states and 533 transitions. [2021-11-02 12:58:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:58:56,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-02 12:58:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:56,905 INFO L225 Difference]: With dead ends: 478 [2021-11-02 12:58:56,905 INFO L226 Difference]: Without dead ends: 476 [2021-11-02 12:58:56,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 164.66ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:58:56,906 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 367 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4188.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.86ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4640.09ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:56,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 0 Invalid, 600 Unknown, 0 Unchecked, 4.86ms Time], IncrementalHoareTripleChecker [3 Valid, 596 Invalid, 1 Unknown, 0 Unchecked, 4640.09ms Time] [2021-11-02 12:58:56,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-02 12:58:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 442. [2021-11-02 12:58:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 433 states have (on average 1.136258660508083) internal successors, (492), 441 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 492 transitions. [2021-11-02 12:58:56,930 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 492 transitions. Word has length 93 [2021-11-02 12:58:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:56,931 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 492 transitions. [2021-11-02 12:58:56,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 492 transitions. [2021-11-02 12:58:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 12:58:56,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:56,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:56,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-02 12:58:56,932 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:58:56,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:56,933 INFO L85 PathProgramCache]: Analyzing trace with hash -541449895, now seen corresponding path program 1 times [2021-11-02 12:58:56,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:56,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503683628] [2021-11-02 12:58:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:56,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:57,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:57,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503683628] [2021-11-02 12:58:57,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503683628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:57,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:57,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:58:57,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36874894] [2021-11-02 12:58:57,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:58:57,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:58:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:58:57,986 INFO L87 Difference]: Start difference. First operand 442 states and 492 transitions. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:00,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:07,129 INFO L93 Difference]: Finished difference Result 552 states and 610 transitions. [2021-11-02 12:59:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:59:07,129 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 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 12:59:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:07,131 INFO L225 Difference]: With dead ends: 552 [2021-11-02 12:59:07,131 INFO L226 Difference]: Without dead ends: 550 [2021-11-02 12:59:07,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1516.30ms TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:59:07,132 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 614 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7467.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.77ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8059.63ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:07,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 0 Invalid, 2149 Unknown, 0 Unchecked, 14.77ms Time], IncrementalHoareTripleChecker [38 Valid, 2110 Invalid, 1 Unknown, 0 Unchecked, 8059.63ms Time] [2021-11-02 12:59:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-02 12:59:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 456. [2021-11-02 12:59:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 447 states have (on average 1.1342281879194631) internal successors, (507), 455 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 507 transitions. [2021-11-02 12:59:07,152 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 507 transitions. Word has length 95 [2021-11-02 12:59:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:07,152 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 507 transitions. [2021-11-02 12:59:07,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 507 transitions. [2021-11-02 12:59:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 12:59:07,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:07,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:07,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-02 12:59:07,153 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:07,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:07,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2059414454, now seen corresponding path program 1 times [2021-11-02 12:59:07,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:07,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504549147] [2021-11-02 12:59:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:07,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:07,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:07,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504549147] [2021-11-02 12:59:07,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504549147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:07,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:07,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:59:07,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961645636] [2021-11-02 12:59:07,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:59:07,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:07,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:59:07,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:59:07,575 INFO L87 Difference]: Start difference. First operand 456 states and 507 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:09,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:11,596 INFO L93 Difference]: Finished difference Result 604 states and 675 transitions. [2021-11-02 12:59:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:59:11,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 12:59:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:11,597 INFO L225 Difference]: With dead ends: 604 [2021-11-02 12:59:11,597 INFO L226 Difference]: Without dead ends: 458 [2021-11-02 12:59:11,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.81ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:59:11,598 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3570.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3930.51ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:11,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 700 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [2 Valid, 697 Invalid, 1 Unknown, 0 Unchecked, 3930.51ms Time] [2021-11-02 12:59:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-02 12:59:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 402. [2021-11-02 12:59:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 393 states have (on average 1.1246819338422391) internal successors, (442), 401 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 442 transitions. [2021-11-02 12:59:11,613 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 442 transitions. Word has length 95 [2021-11-02 12:59:11,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:11,614 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 442 transitions. [2021-11-02 12:59:11,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 442 transitions. [2021-11-02 12:59:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 12:59:11,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:11,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:11,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-02 12:59:11,616 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash 468861849, now seen corresponding path program 1 times [2021-11-02 12:59:11,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:11,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063930606] [2021-11-02 12:59:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:11,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:11,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:11,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063930606] [2021-11-02 12:59:11,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063930606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:11,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:11,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:59:11,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783456566] [2021-11-02 12:59:11,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:59:11,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:11,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:59:11,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:59:11,923 INFO L87 Difference]: Start difference. First operand 402 states and 442 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:13,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:17,723 INFO L93 Difference]: Finished difference Result 624 states and 696 transitions. [2021-11-02 12:59:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:59:17,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 12:59:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:17,724 INFO L225 Difference]: With dead ends: 624 [2021-11-02 12:59:17,725 INFO L226 Difference]: Without dead ends: 500 [2021-11-02 12:59:17,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 354.86ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:59:17,725 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 373 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5061.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.05ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5503.53ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:17,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 0 Invalid, 1336 Unknown, 0 Unchecked, 8.05ms Time], IncrementalHoareTripleChecker [19 Valid, 1316 Invalid, 1 Unknown, 0 Unchecked, 5503.53ms Time] [2021-11-02 12:59:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-02 12:59:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 402. [2021-11-02 12:59:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 393 states have (on average 1.1170483460559797) internal successors, (439), 401 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 439 transitions. [2021-11-02 12:59:17,740 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 439 transitions. Word has length 95 [2021-11-02 12:59:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:17,740 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 439 transitions. [2021-11-02 12:59:17,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 439 transitions. [2021-11-02 12:59:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 12:59:17,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:17,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:17,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-02 12:59:17,742 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:17,742 INFO L85 PathProgramCache]: Analyzing trace with hash -552206505, now seen corresponding path program 1 times [2021-11-02 12:59:17,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:17,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476083486] [2021-11-02 12:59:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:17,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:19,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:19,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476083486] [2021-11-02 12:59:19,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476083486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:19,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:19,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 12:59:19,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731449782] [2021-11-02 12:59:19,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:59:19,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:19,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:59:19,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:59:19,074 INFO L87 Difference]: Start difference. First operand 402 states and 439 transitions. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:21,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:27,266 INFO L93 Difference]: Finished difference Result 454 states and 490 transitions. [2021-11-02 12:59:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:59:27,266 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 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 12:59:27,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:27,268 INFO L225 Difference]: With dead ends: 454 [2021-11-02 12:59:27,268 INFO L226 Difference]: Without dead ends: 452 [2021-11-02 12:59:27,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1371.41ms TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:59:27,269 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 457 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6853.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.65ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7377.61ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:27,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 0 Invalid, 1974 Unknown, 0 Unchecked, 15.65ms Time], IncrementalHoareTripleChecker [16 Valid, 1957 Invalid, 1 Unknown, 0 Unchecked, 7377.61ms Time] [2021-11-02 12:59:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-02 12:59:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 388. [2021-11-02 12:59:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 379 states have (on average 1.1134564643799472) internal successors, (422), 387 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 422 transitions. [2021-11-02 12:59:27,284 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 422 transitions. Word has length 95 [2021-11-02 12:59:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:27,284 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 422 transitions. [2021-11-02 12:59:27,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 422 transitions. [2021-11-02 12:59:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 12:59:27,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:27,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:27,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-02 12:59:27,285 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:27,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash -642167461, now seen corresponding path program 1 times [2021-11-02 12:59:27,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:27,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121591608] [2021-11-02 12:59:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:27,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:30,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:30,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121591608] [2021-11-02 12:59:30,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121591608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:30,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:30,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:59:30,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710454909] [2021-11-02 12:59:30,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:59:30,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:59:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:59:30,401 INFO L87 Difference]: Start difference. First operand 388 states and 422 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:33,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:37,213 INFO L93 Difference]: Finished difference Result 412 states and 443 transitions. [2021-11-02 12:59:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:59:37,213 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-02 12:59:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:37,214 INFO L225 Difference]: With dead ends: 412 [2021-11-02 12:59:37,214 INFO L226 Difference]: Without dead ends: 410 [2021-11-02 12:59:37,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1038.44ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:59:37,215 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 548 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5741.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.62ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6273.90ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:37,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 0 Invalid, 1236 Unknown, 0 Unchecked, 9.62ms Time], IncrementalHoareTripleChecker [15 Valid, 1220 Invalid, 1 Unknown, 0 Unchecked, 6273.90ms Time] [2021-11-02 12:59:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-02 12:59:37,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 388. [2021-11-02 12:59:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 379 states have (on average 1.108179419525066) internal successors, (420), 387 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 420 transitions. [2021-11-02 12:59:37,230 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 420 transitions. Word has length 97 [2021-11-02 12:59:37,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:37,231 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 420 transitions. [2021-11-02 12:59:37,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:37,231 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 420 transitions. [2021-11-02 12:59:37,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 12:59:37,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:37,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:37,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-02 12:59:37,232 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 12:59:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash -965477682, now seen corresponding path program 1 times [2021-11-02 12:59:37,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:37,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468670394] [2021-11-02 12:59:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:37,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:37,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:37,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468670394] [2021-11-02 12:59:37,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468670394] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:59:37,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800421116] [2021-11-02 12:59:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:37,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:59:37,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:59:37,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:59:37,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 12:59:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:38,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-02 12:59:38,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:59:38,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 12:59:39,252 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 12:59:39,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-02 12:59:39,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-02 12:59:40,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:59:40,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-02 12:59:40,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:59:40,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-02 12:59:41,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-02 12:59:41,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-02 12:59:42,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:59:42,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-11-02 12:59:42,771 INFO L354 Elim1Store]: treesize reduction 282, result has 22.3 percent of original size [2021-11-02 12:59:42,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 74 treesize of output 131 [2021-11-02 12:59:44,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:59:44,637 INFO L354 Elim1Store]: treesize reduction 63, result has 18.2 percent of original size [2021-11-02 12:59:44,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 68 [2021-11-02 12:59:47,683 INFO L354 Elim1Store]: treesize reduction 78, result has 15.2 percent of original size [2021-11-02 12:59:47,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 126 treesize of output 99 [2021-11-02 12:59:50,834 INFO L354 Elim1Store]: treesize reduction 356, result has 22.4 percent of original size [2021-11-02 12:59:50,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 93 treesize of output 152 [2021-11-02 12:59:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:56,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:59:59,539 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_memcpy_impl_~dst.offset Int) (aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 Int) (ULTIMATE.start_memcpy_impl_~src.offset Int) (ULTIMATE.start_aws_byte_buf_write_~len Int)) (or (< 9223372036854775807 aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58) (not (= (select (let ((.cse0 (select (store |c_#memory_int| c_ULTIMATE.start_memcpy_impl_~dst.base (let ((.cse1 (mod aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 18446744073709551616))) (store (select |c_#memory_int| c_ULTIMATE.start_memcpy_impl_~dst.base) (+ .cse1 ULTIMATE.start_memcpy_impl_~dst.offset) (select (select |c_#memory_int| c_ULTIMATE.start_memcpy_impl_~src.base) (+ .cse1 ULTIMATE.start_memcpy_impl_~src.offset))))) c_ULTIMATE.start_aws_byte_buf_write_~buf.base))) (store .cse0 c_ULTIMATE.start_aws_byte_buf_write_~buf.offset (+ (select .cse0 c_ULTIMATE.start_aws_byte_buf_write_~buf.offset) ULTIMATE.start_aws_byte_buf_write_~len))) (+ c_ULTIMATE.start_aws_byte_buf_write_~buf.offset 16)) 0)) (< aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 0))) (forall ((ULTIMATE.start_memcpy_impl_~dst.offset Int) (aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 Int) (ULTIMATE.start_memcpy_impl_~src.offset Int) (ULTIMATE.start_aws_byte_buf_write_~len Int)) (or (not (= (select (let ((.cse2 (select (store |c_#memory_int| c_ULTIMATE.start_memcpy_impl_~dst.base (let ((.cse3 (mod aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 18446744073709551616))) (store (select |c_#memory_int| c_ULTIMATE.start_memcpy_impl_~dst.base) (+ (- 18446744073709551616) .cse3 ULTIMATE.start_memcpy_impl_~dst.offset) (select (select |c_#memory_int| c_ULTIMATE.start_memcpy_impl_~src.base) (+ (- 18446744073709551616) .cse3 ULTIMATE.start_memcpy_impl_~src.offset))))) c_ULTIMATE.start_aws_byte_buf_write_~buf.base))) (store .cse2 c_ULTIMATE.start_aws_byte_buf_write_~buf.offset (+ (select .cse2 c_ULTIMATE.start_aws_byte_buf_write_~buf.offset) ULTIMATE.start_aws_byte_buf_write_~len))) (+ c_ULTIMATE.start_aws_byte_buf_write_~buf.offset 16)) 0)) (<= 18446744073709551616 aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58) (<= aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 9223372036854775807)))) is different from false [2021-11-02 13:00:22,549 WARN L210 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 55 [2021-11-02 13:00:34,679 WARN L210 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-02 13:00:51,247 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| Int) (|ULTIMATE.start_aws_hton32_#res| Int)) (or (and (forall ((v_prenex_16 Int) (v_prenex_15 Int) (v_prenex_12 Int) (v_prenex_14 Int) (v_prenex_13 Int)) (or (< v_prenex_13 0) (not (= (select (let ((.cse0 (select (let ((.cse4 (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 |ULTIMATE.start_aws_hton32_#res|))) (let ((.cse1 (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| .cse4)) (.cse2 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 v_prenex_16)) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)))) (store .cse1 .cse2 (let ((.cse3 (mod v_prenex_13 18446744073709551616))) (store (select .cse1 .cse2) (+ v_prenex_12 .cse3) (select .cse4 (+ v_prenex_14 .cse3))))))) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|))) (store .cse0 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset| (+ (select .cse0 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|) v_prenex_15))) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)) 0)) (< 9223372036854775807 v_prenex_13))) (forall ((ULTIMATE.start_memcpy_impl_~dst.offset Int) (aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 Int) (ULTIMATE.start_memcpy_impl_~src.offset Int) (v_DerPreprocessor_1 Int) (ULTIMATE.start_aws_byte_buf_write_~len Int)) (or (<= 18446744073709551616 aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58) (not (= (select (let ((.cse5 (select (let ((.cse9 (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 |ULTIMATE.start_aws_hton32_#res|))) (let ((.cse6 (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| .cse9)) (.cse7 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 v_DerPreprocessor_1)) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)))) (store .cse6 .cse7 (let ((.cse8 (mod aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 18446744073709551616))) (store (select .cse6 .cse7) (+ (- 18446744073709551616) .cse8 ULTIMATE.start_memcpy_impl_~dst.offset) (select .cse9 (+ (- 18446744073709551616) .cse8 ULTIMATE.start_memcpy_impl_~src.offset))))))) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|))) (store .cse5 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset| (+ (select .cse5 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|) ULTIMATE.start_aws_byte_buf_write_~len))) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)) 0)) (<= aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 9223372036854775807)))) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 |ULTIMATE.start_aws_hton32_#res|)) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)) 0))) is different from false [2021-11-02 13:01:02,646 INFO L354 Elim1Store]: treesize reduction 60, result has 56.8 percent of original size [2021-11-02 13:01:02,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 1494 treesize of output 1334 [2021-11-02 13:01:03,501 INFO L354 Elim1Store]: treesize reduction 502, result has 44.7 percent of original size [2021-11-02 13:01:03,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 1334 treesize of output 1136 [2021-11-02 13:01:03,819 INFO L354 Elim1Store]: treesize reduction 82, result has 57.5 percent of original size [2021-11-02 13:01:03,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1136 treesize of output 1192 [2021-11-02 13:01:04,190 INFO L354 Elim1Store]: treesize reduction 60, result has 68.9 percent of original size [2021-11-02 13:01:04,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1192 treesize of output 1278 [2021-11-02 13:01:04,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-02 13:01:04,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 13:01:04,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 13:01:04,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386481104] [2021-11-02 13:01:04,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:01:04,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:01:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:01:04,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=703, Unknown=10, NotChecked=110, Total=930 [2021-11-02 13:01:04,227 INFO L87 Difference]: Start difference. First operand 388 states and 420 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:01:04,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 50026.65ms TimeCoverageRelationStatistics Valid=107, Invalid=703, Unknown=10, NotChecked=110, Total=930 [2021-11-02 13:01:04,228 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-02 13:01:04,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.01ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-02 13:01:04,253 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 13:01:04,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-02 13:01:04,432 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@51f7f15b at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-02 13:01:04,435 INFO L158 Benchmark]: Toolchain (without parser) took 568583.73ms. Allocated memory was 107.0MB in the beginning and 853.5MB in the end (delta: 746.6MB). Free memory was 70.6MB in the beginning and 449.1MB in the end (delta: -378.5MB). Peak memory consumption was 368.7MB. Max. memory is 16.1GB. [2021-11-02 13:01:04,436 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-02 13:01:04,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2060.39ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 70.6MB in the beginning and 79.2MB in the end (delta: -8.6MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. [2021-11-02 13:01:04,436 INFO L158 Benchmark]: Boogie Procedure Inliner took 215.51ms. Allocated memory is still 142.6MB. Free memory was 79.2MB in the beginning and 66.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-02 13:01:04,436 INFO L158 Benchmark]: Boogie Preprocessor took 127.18ms. Allocated memory is still 142.6MB. Free memory was 66.0MB in the beginning and 56.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-02 13:01:04,436 INFO L158 Benchmark]: RCFGBuilder took 5690.28ms. Allocated memory was 142.6MB in the beginning and 425.7MB in the end (delta: 283.1MB). Free memory was 56.1MB in the beginning and 191.4MB in the end (delta: -135.3MB). Peak memory consumption was 223.8MB. Max. memory is 16.1GB. [2021-11-02 13:01:04,437 INFO L158 Benchmark]: TraceAbstraction took 560483.84ms. Allocated memory was 425.7MB in the beginning and 853.5MB in the end (delta: 427.8MB). Free memory was 191.4MB in the beginning and 449.1MB in the end (delta: -257.7MB). Peak memory consumption was 170.7MB. Max. memory is 16.1GB. [2021-11-02 13:01:04,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2060.39ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 70.6MB in the beginning and 79.2MB in the end (delta: -8.6MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 215.51ms. Allocated memory is still 142.6MB. Free memory was 79.2MB in the beginning and 66.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.18ms. Allocated memory is still 142.6MB. Free memory was 66.0MB in the beginning and 56.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 5690.28ms. Allocated memory was 142.6MB in the beginning and 425.7MB in the end (delta: 283.1MB). Free memory was 56.1MB in the beginning and 191.4MB in the end (delta: -135.3MB). Peak memory consumption was 223.8MB. Max. memory is 16.1GB. * TraceAbstraction took 560483.84ms. Allocated memory was 425.7MB in the beginning and 853.5MB in the end (delta: 427.8MB). Free memory was 191.4MB in the beginning and 449.1MB in the end (delta: -257.7MB). Peak memory consumption was 170.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@51f7f15b de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@51f7f15b: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-02 13:01:04,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:01:06,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:01:06,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:01:06,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:01:06,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:01:06,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:01:06,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:01:06,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:01:06,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:01:06,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:01:06,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:01:06,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:01:06,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:01:06,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:01:06,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:01:06,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:01:06,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:01:06,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:01:06,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:01:06,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:01:06,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:01:06,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:01:06,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:01:06,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:01:06,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:01:06,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:01:06,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:01:06,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:01:06,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:01:06,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:01:06,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:01:06,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:01:06,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:01:06,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:01:06,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:01:06,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:01:06,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:01:06,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:01:06,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:01:06,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:01:06,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:01:06,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-02 13:01:06,565 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:01:06,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:01:06,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:01:06,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:01:06,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:01:06,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:01:06,569 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:01:06,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:01:06,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:01:06,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:01:06,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:01:06,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:01:06,571 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 13:01:06,571 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 13:01:06,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:01:06,572 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:01:06,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:01:06,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:01:06,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:01:06,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:01:06,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:01:06,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:01:06,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:01:06,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:01:06,573 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 13:01:06,574 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 13:01:06,574 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:01:06,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:01:06,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:01:06,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:01:06,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 13:01:06,575 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2021-11-02 13:01:06,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:01:06,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:01:06,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:01:06,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:01:06,962 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:01:06,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-02 13:01:07,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3437860f/896f3220309b4dd3bb4629b48b3e11e4/FLAGf937a018e [2021-11-02 13:01:07,782 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:01:07,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-02 13:01:07,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3437860f/896f3220309b4dd3bb4629b48b3e11e4/FLAGf937a018e [2021-11-02 13:01:08,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3437860f/896f3220309b4dd3bb4629b48b3e11e4 [2021-11-02 13:01:08,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:01:08,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:01:08,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:01:08,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:01:08,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:01:08,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:01:08" (1/1) ... [2021-11-02 13:01:08,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ffce40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:08, skipping insertion in model container [2021-11-02 13:01:08,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:01:08" (1/1) ... [2021-11-02 13:01:08,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:01:08,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:01:08,359 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-02 13:01:08,370 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-02 13:01:08,395 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:01:08,402 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:01:09,408 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:09,410 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:09,410 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:09,411 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:09,412 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:09,435 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:09,436 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:09,438 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:09,439 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:09,795 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:01:09,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:01:09,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:01:09,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:01:09,802 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:01:09,803 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:01:09,804 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:01:09,805 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:01:09,807 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:01:09,808 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:01:09,929 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:01:10,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:01:10,137 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:01:10,149 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-02 13:01:10,150 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-02 13:01:10,151 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:01:10,152 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:01:10,176 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,176 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,226 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:01:10,227 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:01:10,228 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:01:10,228 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:01:10,229 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:01:10,229 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:01:10,230 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:01:10,230 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:01:10,230 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:01:10,231 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:01:10,246 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:01:10,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:01:10,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:01:10,729 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:01:10,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10 WrapperNode [2021-11-02 13:01:10,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:01:10,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:01:10,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:01:10,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:01:10,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:10,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:10,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:01:10,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:01:10,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:01:10,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:01:10,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:10,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:10,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:10,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:11,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:11,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:11,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:11,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:01:11,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:01:11,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:01:11,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:01:11,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (1/1) ... [2021-11-02 13:01:11,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:01:11,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:01:11,149 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 13:01:11,171 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 13:01:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-02 13:01:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:01:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 13:01:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-02 13:01:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-02 13:01:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:01:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:01:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:01:11,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:01:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 13:01:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-02 13:01:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 13:01:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:01:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:01:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-02 13:01:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 13:01:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 13:01:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:01:19,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:01:19,033 INFO L299 CfgBuilder]: Removed 89 assume(true) statements. [2021-11-02 13:01:19,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:01:19 BoogieIcfgContainer [2021-11-02 13:01:19,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:01:19,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:01:19,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:01:19,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:01:19,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:01:08" (1/3) ... [2021-11-02 13:01:19,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21eccace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:01:19, skipping insertion in model container [2021-11-02 13:01:19,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:01:10" (2/3) ... [2021-11-02 13:01:19,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21eccace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:01:19, skipping insertion in model container [2021-11-02 13:01:19,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:01:19" (3/3) ... [2021-11-02 13:01:19,044 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2021-11-02 13:01:19,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:01:19,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 13:01:19,106 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:01:19,111 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 13:01:19,112 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 13:01:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 13:01:19,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:01:19,133 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] [2021-11-02 13:01:19,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:01:19,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:01:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash 733514216, now seen corresponding path program 1 times [2021-11-02 13:01:19,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:01:19,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614859407] [2021-11-02 13:01:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:01:19,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:01:19,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:01:19,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:01:19,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 13:01:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:01:21,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 13:01:21,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:01:21,859 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 13:01:21,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:01:21,923 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 13:01:21,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:01:21,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614859407] [2021-11-02 13:01:21,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614859407] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:01:21,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:01:21,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 13:01:21,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017643162] [2021-11-02 13:01:21,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:01:21,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:01:21,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:01:21,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:01:21,953 INFO L87 Difference]: Start difference. First operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:24,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:01:25,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:01:25,357 INFO L93 Difference]: Finished difference Result 368 states and 511 transitions. [2021-11-02 13:01:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:01:25,361 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-02 13:01:25,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:01:25,369 INFO L225 Difference]: With dead ends: 368 [2021-11-02 13:01:25,369 INFO L226 Difference]: Without dead ends: 181 [2021-11-02 13:01:25,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.22ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:01:25,374 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3130.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3334.59ms IncrementalHoareTripleChecker+Time [2021-11-02 13:01:25,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 4.06ms Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 1 Unknown, 0 Unchecked, 3334.59ms Time] [2021-11-02 13:01:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-02 13:01:25,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-02 13:01:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3588235294117648) internal successors, (231), 180 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2021-11-02 13:01:25,410 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 39 [2021-11-02 13:01:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:01:25,411 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2021-11-02 13:01:25,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:25,411 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2021-11-02 13:01:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 13:01:25,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:01:25,413 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] [2021-11-02 13:01:25,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-02 13:01:25,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:01:25,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:01:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:01:25,615 INFO L85 PathProgramCache]: Analyzing trace with hash 699508844, now seen corresponding path program 1 times [2021-11-02 13:01:25,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:01:25,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199810395] [2021-11-02 13:01:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:01:25,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:01:25,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:01:25,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:01:25,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 13:01:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:01:27,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 13:01:27,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:01:28,171 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 13:01:28,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:01:28,395 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 13:01:28,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:01:28,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199810395] [2021-11-02 13:01:28,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199810395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:01:28,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:01:28,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 13:01:28,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571842360] [2021-11-02 13:01:28,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:01:28,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:01:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:01:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:01:28,398 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:30,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:01:32,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:01:32,013 INFO L93 Difference]: Finished difference Result 336 states and 428 transitions. [2021-11-02 13:01:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:01:32,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-02 13:01:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:01:32,016 INFO L225 Difference]: With dead ends: 336 [2021-11-02 13:01:32,016 INFO L226 Difference]: Without dead ends: 181 [2021-11-02 13:01:32,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:01:32,017 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3337.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.62ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3543.23ms IncrementalHoareTripleChecker+Time [2021-11-02 13:01:32,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 351 Unknown, 0 Unchecked, 9.62ms Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3543.23ms Time] [2021-11-02 13:01:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-02 13:01:32,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-02 13:01:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3411764705882352) internal successors, (228), 180 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 228 transitions. [2021-11-02 13:01:32,030 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 228 transitions. Word has length 39 [2021-11-02 13:01:32,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:01:32,030 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 228 transitions. [2021-11-02 13:01:32,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 228 transitions. [2021-11-02 13:01:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 13:01:32,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:01:32,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:01:32,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 13:01:32,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:01:32,243 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:01:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:01:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1277536330, now seen corresponding path program 1 times [2021-11-02 13:01:32,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:01:32,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782147861] [2021-11-02 13:01:32,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:01:32,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:01:32,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:01:32,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:01:32,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 13:01:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:01:34,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 13:01:34,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:01:34,710 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 13:01:34,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:01:34,874 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 13:01:34,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:01:34,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782147861] [2021-11-02 13:01:34,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782147861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:01:34,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:01:34,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 13:01:34,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342723404] [2021-11-02 13:01:34,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:01:34,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:01:34,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:01:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:01:34,877 INFO L87 Difference]: Start difference. First operand 181 states and 228 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:37,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:01:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:01:39,174 INFO L93 Difference]: Finished difference Result 397 states and 508 transitions. [2021-11-02 13:01:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:01:39,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 13:01:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:01:39,179 INFO L225 Difference]: With dead ends: 397 [2021-11-02 13:01:39,179 INFO L226 Difference]: Without dead ends: 241 [2021-11-02 13:01:39,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:01:39,183 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4007.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.93ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4224.05ms IncrementalHoareTripleChecker+Time [2021-11-02 13:01:39,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 8.93ms Time], IncrementalHoareTripleChecker [21 Valid, 699 Invalid, 1 Unknown, 0 Unchecked, 4224.05ms Time] [2021-11-02 13:01:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-02 13:01:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 193. [2021-11-02 13:01:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3186813186813187) internal successors, (240), 192 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 240 transitions. [2021-11-02 13:01:39,195 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 240 transitions. Word has length 51 [2021-11-02 13:01:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:01:39,195 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 240 transitions. [2021-11-02 13:01:39,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 240 transitions. [2021-11-02 13:01:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 13:01:39,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:01:39,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:01:39,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 13:01:39,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:01:39,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:01:39,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:01:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1671903116, now seen corresponding path program 1 times [2021-11-02 13:01:39,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:01:39,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229500549] [2021-11-02 13:01:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:01:39,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:01:39,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:01:39,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:01:39,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 13:01:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:01:41,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 13:01:41,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:01:42,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-02 13:01:42,652 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 13:01:42,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:01:43,031 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 40 treesize of output 34 [2021-11-02 13:01:43,364 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 13:01:43,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:01:43,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229500549] [2021-11-02 13:01:43,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229500549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:01:43,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:01:43,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-02 13:01:43,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373424719] [2021-11-02 13:01:43,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 13:01:43,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:01:43,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 13:01:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:01:43,366 INFO L87 Difference]: Start difference. First operand 193 states and 240 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 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 13:01:45,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:01:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:01:51,153 INFO L93 Difference]: Finished difference Result 420 states and 528 transitions. [2021-11-02 13:01:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:01:51,154 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 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 51 [2021-11-02 13:01:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:01:51,156 INFO L225 Difference]: With dead ends: 420 [2021-11-02 13:01:51,156 INFO L226 Difference]: Without dead ends: 254 [2021-11-02 13:01:51,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1057.03ms TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:01:51,157 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1310 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6748.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.61ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7216.27ms IncrementalHoareTripleChecker+Time [2021-11-02 13:01:51,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 0 Invalid, 1237 Unknown, 0 Unchecked, 30.61ms Time], IncrementalHoareTripleChecker [32 Valid, 1204 Invalid, 1 Unknown, 0 Unchecked, 7216.27ms Time] [2021-11-02 13:01:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-02 13:01:51,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 196. [2021-11-02 13:01:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 185 states have (on average 1.318918918918919) internal successors, (244), 195 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 244 transitions. [2021-11-02 13:01:51,169 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 244 transitions. Word has length 51 [2021-11-02 13:01:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:01:51,170 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 244 transitions. [2021-11-02 13:01:51,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 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 13:01:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 244 transitions. [2021-11-02 13:01:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 13:01:51,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:01:51,172 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 13:01:51,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 13:01:51,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:01:51,384 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:01:51,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:01:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash 325189425, now seen corresponding path program 1 times [2021-11-02 13:01:51,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:01:51,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344310302] [2021-11-02 13:01:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:01:51,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:01:51,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:01:51,389 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:01:51,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 13:01:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:01:53,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 13:01:53,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:01:53,997 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 13:01:53,997 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 59 treesize of output 23 [2021-11-02 13:01:54,229 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 13:01:54,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:01:54,586 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 13:01:54,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:01:54,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344310302] [2021-11-02 13:01:54,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344310302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:01:54,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:01:54,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-02 13:01:54,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61598371] [2021-11-02 13:01:54,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:01:54,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:01:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:01:54,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:01:54,588 INFO L87 Difference]: Start difference. First operand 196 states and 244 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 13:01:56,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:02:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:02:03,555 INFO L93 Difference]: Finished difference Result 592 states and 733 transitions. [2021-11-02 13:02:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:02:03,556 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 58 [2021-11-02 13:02:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:02:03,558 INFO L225 Difference]: With dead ends: 592 [2021-11-02 13:02:03,558 INFO L226 Difference]: Without dead ends: 416 [2021-11-02 13:02:03,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 386.99ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:02:03,559 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 666 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8078.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.14ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8718.04ms IncrementalHoareTripleChecker+Time [2021-11-02 13:02:03,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 0 Invalid, 1456 Unknown, 0 Unchecked, 23.14ms Time], IncrementalHoareTripleChecker [38 Valid, 1417 Invalid, 1 Unknown, 0 Unchecked, 8718.04ms Time] [2021-11-02 13:02:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-02 13:02:03,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 238. [2021-11-02 13:02:03,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 227 states have (on average 1.3127753303964758) internal successors, (298), 237 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 13:02:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 298 transitions. [2021-11-02 13:02:03,588 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 298 transitions. Word has length 58 [2021-11-02 13:02:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:02:03,590 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 298 transitions. [2021-11-02 13:02:03,591 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 13:02:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 298 transitions. [2021-11-02 13:02:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 13:02:03,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:02:03,596 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 13:02:03,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-02 13:02:03,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:02:03,812 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:02:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:02:03,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1046617873, now seen corresponding path program 1 times [2021-11-02 13:02:03,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:02:03,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102780597] [2021-11-02 13:02:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:02:03,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:02:03,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:02:03,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:02:03,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 13:02:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:02:06,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 13:02:06,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:02:06,465 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 13:02:06,466 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 59 treesize of output 23 [2021-11-02 13:02:06,966 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 13:02:06,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:02:07,488 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 13:02:07,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:02:07,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102780597] [2021-11-02 13:02:07,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102780597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:02:07,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:02:07,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-02 13:02:07,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471296666] [2021-11-02 13:02:07,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 13:02:07,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:02:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 13:02:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:02:07,491 INFO L87 Difference]: Start difference. First operand 238 states and 298 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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 13:02:09,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:02:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:02:26,089 INFO L93 Difference]: Finished difference Result 735 states and 873 transitions. [2021-11-02 13:02:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 13:02:26,090 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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 58 [2021-11-02 13:02:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:02:26,093 INFO L225 Difference]: With dead ends: 735 [2021-11-02 13:02:26,093 INFO L226 Difference]: Without dead ends: 459 [2021-11-02 13:02:26,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1853.49ms TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-11-02 13:02:26,095 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 450 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16021.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.66ms SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17164.58ms IncrementalHoareTripleChecker+Time [2021-11-02 13:02:26,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 0 Invalid, 3955 Unknown, 0 Unchecked, 32.66ms Time], IncrementalHoareTripleChecker [139 Valid, 3815 Invalid, 1 Unknown, 0 Unchecked, 17164.58ms Time] [2021-11-02 13:02:26,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-02 13:02:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 231. [2021-11-02 13:02:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 220 states have (on average 1.2545454545454546) internal successors, (276), 230 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:02:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 276 transitions. [2021-11-02 13:02:26,105 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 276 transitions. Word has length 58 [2021-11-02 13:02:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:02:26,106 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 276 transitions. [2021-11-02 13:02:26,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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 13:02:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 276 transitions. [2021-11-02 13:02:26,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 13:02:26,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:02:26,108 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 13:02:26,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-02 13:02:26,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:02:26,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:02:26,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:02:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1728662275, now seen corresponding path program 1 times [2021-11-02 13:02:26,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:02:26,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687595015] [2021-11-02 13:02:26,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:02:26,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:02:26,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:02:26,321 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:02:26,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 13:02:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:02:28,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 13:02:28,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:02:29,561 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:02:29,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-02 13:02:29,781 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 13:02:29,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:02:30,513 INFO L354 Elim1Store]: treesize reduction 39, result has 46.6 percent of original size [2021-11-02 13:02:30,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 46 [2021-11-02 13:02:31,483 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 13:02:31,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:02:31,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687595015] [2021-11-02 13:02:31,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687595015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:02:31,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:02:31,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-02 13:02:31,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406713768] [2021-11-02 13:02:31,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:02:31,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:02:31,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:02:31,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:02:31,485 INFO L87 Difference]: Start difference. First operand 231 states and 276 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:02:33,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:02:37,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:02:42,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:02:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:02:42,854 INFO L93 Difference]: Finished difference Result 631 states and 753 transitions. [2021-11-02 13:02:42,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:02:42,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 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 13:02:42,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:02:42,857 INFO L225 Difference]: With dead ends: 631 [2021-11-02 13:02:42,857 INFO L226 Difference]: Without dead ends: 436 [2021-11-02 13:02:42,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 925.86ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:02:42,859 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 365 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10396.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.81ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 10863.28ms IncrementalHoareTripleChecker+Time [2021-11-02 13:02:42,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 0 Invalid, 1236 Unknown, 0 Unchecked, 11.81ms Time], IncrementalHoareTripleChecker [20 Valid, 1212 Invalid, 3 Unknown, 1 Unchecked, 10863.28ms Time] [2021-11-02 13:02:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-02 13:02:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 239. [2021-11-02 13:02:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 228 states have (on average 1.2456140350877194) internal successors, (284), 238 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:02:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 284 transitions. [2021-11-02 13:02:42,867 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 284 transitions. Word has length 66 [2021-11-02 13:02:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:02:42,867 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 284 transitions. [2021-11-02 13:02:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:02:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 284 transitions. [2021-11-02 13:02:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 13:02:42,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:02:42,869 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 13:02:42,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 13:02:43,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:02:43,088 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:02:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:02:43,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1672818683, now seen corresponding path program 1 times [2021-11-02 13:02:43,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:02:43,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303821306] [2021-11-02 13:02:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:02:43,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:02:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:02:43,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:02:43,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 13:02:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:02:45,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 13:02:45,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:02:46,222 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-02 13:02:46,223 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 53 treesize of output 23 [2021-11-02 13:02:46,316 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 13:02:46,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:02:47,108 INFO L354 Elim1Store]: treesize reduction 24, result has 67.1 percent of original size [2021-11-02 13:02:47,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 66 [2021-11-02 13:02:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:02:49,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:02:49,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303821306] [2021-11-02 13:02:49,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303821306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:02:49,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:02:49,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-02 13:02:49,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723697112] [2021-11-02 13:02:49,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 13:02:49,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:02:49,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 13:02:49,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:02:49,003 INFO L87 Difference]: Start difference. First operand 239 states and 284 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:02:51,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:02:57,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:03:02,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:03:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:03:04,735 INFO L93 Difference]: Finished difference Result 731 states and 862 transitions. [2021-11-02 13:03:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 13:03:04,736 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 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 13:03:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:03:04,738 INFO L225 Difference]: With dead ends: 731 [2021-11-02 13:03:04,738 INFO L226 Difference]: Without dead ends: 590 [2021-11-02 13:03:04,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2074.24ms TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-02 13:03:04,740 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1535 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 91 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13329.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.99ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14157.27ms IncrementalHoareTripleChecker+Time [2021-11-02 13:03:04,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 0 Invalid, 1883 Unknown, 0 Unchecked, 21.99ms Time], IncrementalHoareTripleChecker [91 Valid, 1789 Invalid, 3 Unknown, 0 Unchecked, 14157.27ms Time] [2021-11-02 13:03:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-02 13:03:04,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 266. [2021-11-02 13:03:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 255 states have (on average 1.2352941176470589) internal successors, (315), 265 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 315 transitions. [2021-11-02 13:03:04,752 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 315 transitions. Word has length 66 [2021-11-02 13:03:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:03:04,753 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 315 transitions. [2021-11-02 13:03:04,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 315 transitions. [2021-11-02 13:03:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 13:03:04,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:03:04,754 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 13:03:04,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-02 13:03:04,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:03:04,980 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:03:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:03:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash 102188679, now seen corresponding path program 1 times [2021-11-02 13:03:04,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:03:04,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408594909] [2021-11-02 13:03:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:03:04,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:03:04,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:03:04,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:03:04,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 13:03:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:03:07,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 13:03:07,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:03:07,974 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 13:03:07,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:03:08,408 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 13:03:08,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:03:08,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408594909] [2021-11-02 13:03:08,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408594909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:03:08,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:03:08,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-02 13:03:08,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818515618] [2021-11-02 13:03:08,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 13:03:08,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:03:08,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 13:03:08,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:03:08,411 INFO L87 Difference]: Start difference. First operand 266 states and 315 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 13:03:10,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:03:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:03:12,571 INFO L93 Difference]: Finished difference Result 347 states and 407 transitions. [2021-11-02 13:03:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:03:12,571 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 66 [2021-11-02 13:03:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:03:12,573 INFO L225 Difference]: With dead ends: 347 [2021-11-02 13:03:12,573 INFO L226 Difference]: Without dead ends: 266 [2021-11-02 13:03:12,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 253.49ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:03:12,574 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 593 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3746.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3959.26ms IncrementalHoareTripleChecker+Time [2021-11-02 13:03:12,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 0 Invalid, 429 Unknown, 0 Unchecked, 4.08ms Time], IncrementalHoareTripleChecker [6 Valid, 422 Invalid, 1 Unknown, 0 Unchecked, 3959.26ms Time] [2021-11-02 13:03:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-02 13:03:12,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-02 13:03:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 255 states have (on average 1.223529411764706) internal successors, (312), 265 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 312 transitions. [2021-11-02 13:03:12,583 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 312 transitions. Word has length 66 [2021-11-02 13:03:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:03:12,583 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 312 transitions. [2021-11-02 13:03:12,583 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 13:03:12,583 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 312 transitions. [2021-11-02 13:03:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 13:03:12,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:03:12,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:03:12,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 13:03:12,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:03:12,792 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:03:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:03:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1539054020, now seen corresponding path program 1 times [2021-11-02 13:03:12,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:03:12,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186985132] [2021-11-02 13:03:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:03:12,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:03:12,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:03:12,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:03:12,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 13:03:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:03:15,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 13:03:15,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:03:17,596 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 13:03:17,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:03:20,905 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 13:03:20,905 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 40 treesize of output 43 [2021-11-02 13:03:20,965 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-02 13:03:20,965 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 39 treesize of output 34 [2021-11-02 13:03:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:03:21,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:03:21,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186985132] [2021-11-02 13:03:21,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186985132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:03:21,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:03:21,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 12] imperfect sequences [] total 21 [2021-11-02 13:03:21,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140651209] [2021-11-02 13:03:21,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 13:03:21,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:03:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 13:03:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-11-02 13:03:21,227 INFO L87 Difference]: Start difference. First operand 266 states and 312 transitions. Second operand has 21 states, 21 states have (on average 6.619047619047619) internal successors, (139), 21 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:23,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:03:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:03:41,231 INFO L93 Difference]: Finished difference Result 671 states and 789 transitions. [2021-11-02 13:03:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-02 13:03:41,232 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.619047619047619) internal successors, (139), 21 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 13:03:41,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:03:41,235 INFO L225 Difference]: With dead ends: 671 [2021-11-02 13:03:41,235 INFO L226 Difference]: Without dead ends: 559 [2021-11-02 13:03:41,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 8661.26ms TimeCoverageRelationStatistics Valid=887, Invalid=3943, Unknown=0, NotChecked=0, Total=4830 [2021-11-02 13:03:41,238 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2546 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 2972 mSolverCounterSat, 328 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12225.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.62ms SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 2972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13094.49ms IncrementalHoareTripleChecker+Time [2021-11-02 13:03:41,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2546 Valid, 0 Invalid, 3301 Unknown, 0 Unchecked, 31.62ms Time], IncrementalHoareTripleChecker [328 Valid, 2972 Invalid, 1 Unknown, 0 Unchecked, 13094.49ms Time] [2021-11-02 13:03:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-02 13:03:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 305. [2021-11-02 13:03:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 294 states have (on average 1.2142857142857142) internal successors, (357), 304 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 357 transitions. [2021-11-02 13:03:41,252 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 357 transitions. Word has length 72 [2021-11-02 13:03:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:03:41,253 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 357 transitions. [2021-11-02 13:03:41,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.619047619047619) internal successors, (139), 21 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 357 transitions. [2021-11-02 13:03:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 13:03:41,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:03:41,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:03:41,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 13:03:41,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:03:41,475 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:03:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:03:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1546105136, now seen corresponding path program 1 times [2021-11-02 13:03:41,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:03:41,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607551750] [2021-11-02 13:03:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:03:41,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:03:41,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:03:41,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:03:41,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 13:03:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:03:44,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 13:03:44,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:03:45,469 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 13:03:45,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:03:46,328 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-02 13:03:46,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 45 [2021-11-02 13:03:47,344 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 13:03:47,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:03:47,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607551750] [2021-11-02 13:03:47,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607551750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:03:47,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:03:47,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 13 [2021-11-02 13:03:47,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716058833] [2021-11-02 13:03:47,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 13:03:47,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:03:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 13:03:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:03:47,346 INFO L87 Difference]: Start difference. First operand 305 states and 357 transitions. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:49,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:03:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:03:56,988 INFO L93 Difference]: Finished difference Result 536 states and 616 transitions. [2021-11-02 13:03:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:03:56,989 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 13:03:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:03:56,991 INFO L225 Difference]: With dead ends: 536 [2021-11-02 13:03:56,991 INFO L226 Difference]: Without dead ends: 421 [2021-11-02 13:03:56,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1702.72ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-11-02 13:03:56,992 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1349 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 71 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8039.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.76ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8686.81ms IncrementalHoareTripleChecker+Time [2021-11-02 13:03:56,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 0 Invalid, 1630 Unknown, 0 Unchecked, 15.76ms Time], IncrementalHoareTripleChecker [71 Valid, 1558 Invalid, 1 Unknown, 0 Unchecked, 8686.81ms Time] [2021-11-02 13:03:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-02 13:03:57,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 317. [2021-11-02 13:03:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 306 states have (on average 1.2058823529411764) internal successors, (369), 316 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 369 transitions. [2021-11-02 13:03:57,006 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 369 transitions. Word has length 76 [2021-11-02 13:03:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:03:57,006 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 369 transitions. [2021-11-02 13:03:57,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 369 transitions. [2021-11-02 13:03:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 13:03:57,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:03:57,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:03:57,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-02 13:03:57,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:03:57,232 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:03:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:03:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 328516854, now seen corresponding path program 1 times [2021-11-02 13:03:57,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:03:57,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078600222] [2021-11-02 13:03:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:03:57,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:03:57,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:03:57,237 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:03:57,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 13:03:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:03:59,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 13:03:59,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:03:59,806 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 13:03:59,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:04:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:00,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:04:00,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078600222] [2021-11-02 13:04:00,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078600222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:00,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:00,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 13:04:00,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785811067] [2021-11-02 13:04:00,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:04:00,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:04:00,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:04:00,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:04:00,010 INFO L87 Difference]: Start difference. First operand 317 states and 369 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:02,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:04:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:04,415 INFO L93 Difference]: Finished difference Result 603 states and 693 transitions. [2021-11-02 13:04:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:04:04,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-02 13:04:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:04,417 INFO L225 Difference]: With dead ends: 603 [2021-11-02 13:04:04,417 INFO L226 Difference]: Without dead ends: 303 [2021-11-02 13:04:04,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:04:04,418 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4126.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.88ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4347.54ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:04,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 639 Unknown, 0 Unchecked, 6.88ms Time], IncrementalHoareTripleChecker [18 Valid, 620 Invalid, 1 Unknown, 0 Unchecked, 4347.54ms Time] [2021-11-02 13:04:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-02 13:04:04,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 264. [2021-11-02 13:04:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 253 states have (on average 1.173913043478261) internal successors, (297), 263 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 13:04:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 297 transitions. [2021-11-02 13:04:04,428 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 297 transitions. Word has length 76 [2021-11-02 13:04:04,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:04,428 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 297 transitions. [2021-11-02 13:04:04,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:04,429 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 297 transitions. [2021-11-02 13:04:04,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 13:04:04,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:04,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:04:04,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-02 13:04:04,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:04:04,648 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:04:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1639686267, now seen corresponding path program 1 times [2021-11-02 13:04:04,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:04:04,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152037598] [2021-11-02 13:04:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:04,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:04:04,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:04:04,653 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:04:04,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 13:04:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:07,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 13:04:07,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:04:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:07,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:04:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:07,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:04:07,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152037598] [2021-11-02 13:04:07,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152037598] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:07,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:07,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-02 13:04:07,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281273755] [2021-11-02 13:04:07,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:04:07,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:04:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:04:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:04:07,450 INFO L87 Difference]: Start difference. First operand 264 states and 297 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 13:04:09,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:04:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:12,682 INFO L93 Difference]: Finished difference Result 355 states and 400 transitions. [2021-11-02 13:04:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:04:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 13:04:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:12,685 INFO L225 Difference]: With dead ends: 355 [2021-11-02 13:04:12,685 INFO L226 Difference]: Without dead ends: 317 [2021-11-02 13:04:12,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.94ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:04:12,686 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4855.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5130.42ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:12,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 858 Unknown, 0 Unchecked, 5.29ms Time], IncrementalHoareTripleChecker [2 Valid, 855 Invalid, 1 Unknown, 0 Unchecked, 5130.42ms Time] [2021-11-02 13:04:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-02 13:04:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 267. [2021-11-02 13:04:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 256 states have (on average 1.171875) internal successors, (300), 266 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2021-11-02 13:04:12,696 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 77 [2021-11-02 13:04:12,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:12,696 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2021-11-02 13:04:12,697 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 13:04:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2021-11-02 13:04:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 13:04:12,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:12,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:04:12,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 13:04:12,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:04:12,912 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:04:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:12,912 INFO L85 PathProgramCache]: Analyzing trace with hash -708438075, now seen corresponding path program 1 times [2021-11-02 13:04:12,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:04:12,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909457737] [2021-11-02 13:04:12,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:12,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:04:12,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:04:12,917 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:04:12,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 13:04:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:15,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1759 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 13:04:15,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:04:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:16,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 13:04:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:17,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 13:04:17,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909457737] [2021-11-02 13:04:17,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909457737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:17,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:17,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-02 13:04:17,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532154667] [2021-11-02 13:04:17,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:04:17,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 13:04:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:04:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:04:17,277 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:19,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:04:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:23,141 INFO L93 Difference]: Finished difference Result 293 states and 330 transitions. [2021-11-02 13:04:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 13:04:23,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 78 [2021-11-02 13:04:23,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:23,142 INFO L225 Difference]: With dead ends: 293 [2021-11-02 13:04:23,143 INFO L226 Difference]: Without dead ends: 291 [2021-11-02 13:04:23,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 326.92ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:04:23,144 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 299 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5282.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.49ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5606.39ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:23,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 0 Invalid, 827 Unknown, 0 Unchecked, 6.49ms Time], IncrementalHoareTripleChecker [20 Valid, 806 Invalid, 1 Unknown, 0 Unchecked, 5606.39ms Time] [2021-11-02 13:04:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-02 13:04:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 265. [2021-11-02 13:04:23,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 255 states have (on average 1.1686274509803922) internal successors, (298), 264 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 13:04:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 298 transitions. [2021-11-02 13:04:23,154 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 298 transitions. Word has length 78 [2021-11-02 13:04:23,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:23,154 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 298 transitions. [2021-11-02 13:04:23,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:23,154 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 298 transitions. [2021-11-02 13:04:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 13:04:23,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:23,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:04:23,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 13:04:23,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 13:04:23,374 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 13:04:23,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2090948519, now seen corresponding path program 1 times [2021-11-02 13:04:23,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 13:04:23,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103057093] [2021-11-02 13:04:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:23,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 13:04:23,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 13:04:23,379 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 13:04:23,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process Killed by 15