./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_be16_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 e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 22:32:57,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 22:32:57,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 22:32:57,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 22:32:57,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 22:32:57,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 22:32:57,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 22:32:57,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 22:32:57,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 22:32:57,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 22:32:57,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 22:32:57,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 22:32:57,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 22:32:57,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 22:32:57,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 22:32:57,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 22:32:57,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 22:32:57,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 22:32:57,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 22:32:57,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 22:32:57,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 22:32:57,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 22:32:57,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 22:32:57,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 22:32:57,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 22:32:57,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 22:32:57,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 22:32:57,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 22:32:57,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 22:32:57,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 22:32:57,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 22:32:57,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 22:32:57,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 22:32:57,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 22:32:57,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 22:32:57,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 22:32:57,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 22:32:57,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 22:32:57,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 22:32:57,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 22:32:57,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 22:32:57,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 22:32:57,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 22:32:57,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 22:32:57,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 22:32:57,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 22:32:57,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 22:32:57,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 22:32:57,785 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 22:32:57,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 22:32:57,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 22:32:57,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 22:32:57,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 22:32:57,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 22:32:57,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 22:32:57,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 22:32:57,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 22:32:57,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 22:32:57,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 22:32:57,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 22:32:57,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 22:32:57,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:32:57,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 22:32:57,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 22:32:57,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 22:32:57,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 22:32:57,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 22:32:57,788 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 22:32:57,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 22:32:57,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 22:32:57,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 22:32:57,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 [2021-11-03 22:32:58,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 22:32:58,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 22:32:58,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 22:32:58,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 22:32:58,030 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 22:32:58,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2021-11-03 22:32:58,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e63de79f/d8286291f0cc4de5b9d59a65f16b814a/FLAGda4e74032 [2021-11-03 22:32:58,749 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 22:32:58,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2021-11-03 22:32:58,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e63de79f/d8286291f0cc4de5b9d59a65f16b814a/FLAGda4e74032 [2021-11-03 22:32:59,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e63de79f/d8286291f0cc4de5b9d59a65f16b814a [2021-11-03 22:32:59,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 22:32:59,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 22:32:59,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 22:32:59,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 22:32:59,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 22:32:59,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:32:59" (1/1) ... [2021-11-03 22:32:59,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627812ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:32:59, skipping insertion in model container [2021-11-03 22:32:59,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:32:59" (1/1) ... [2021-11-03 22:32:59,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 22:32:59,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 22:32:59,410 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4497,4510] [2021-11-03 22:32:59,416 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_be16_harness.i[4557,4570] [2021-11-03 22:32:59,438 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:32:59,443 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:33:00,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,045 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,045 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,066 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,068 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,070 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,071 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,305 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:33:00,306 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:33:00,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:33:00,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:33:00,319 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:33:00,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:33:00,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:33:00,322 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:33:00,323 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:33:00,323 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:33:00,430 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:33:00,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:33:00,627 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 22:33:00,645 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_be16_harness.i[4497,4510] [2021-11-03 22:33:00,647 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_be16_harness.i[4557,4570] [2021-11-03 22:33:00,649 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:33:00,650 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:33:00,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,695 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,695 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,696 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,696 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:33:00,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:33:00,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:33:00,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:33:00,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:33:00,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:33:00,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:33:00,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:33:00,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:33:00,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:33:00,744 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:33:00,779 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,779 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:00,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:33:00,949 INFO L208 MainTranslator]: Completed translation [2021-11-03 22:33:00,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00 WrapperNode [2021-11-03 22:33:00,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 22:33:00,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 22:33:00,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 22:33:00,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 22:33:00,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 22:33:01,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 22:33:01,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 22:33:01,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 22:33:01,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 22:33:01,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 22:33:01,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 22:33:01,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 22:33:01,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (1/1) ... [2021-11-03 22:33:01,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:33:01,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:33:01,245 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) [2021-11-03 22:33:01,280 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 [2021-11-03 22:33:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure htons [2021-11-03 22:33:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 22:33:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 22:33:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 22:33:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 22:33:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 22:33:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 22:33:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 22:33:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 22:33:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 22:33:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 22:33:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 22:33:05,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 22:33:05,557 INFO L299 CfgBuilder]: Removed 89 assume(true) statements. [2021-11-03 22:33:05,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:33:05 BoogieIcfgContainer [2021-11-03 22:33:05,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 22:33:05,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 22:33:05,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 22:33:05,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 22:33:05,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 10:32:59" (1/3) ... [2021-11-03 22:33:05,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30656cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:33:05, skipping insertion in model container [2021-11-03 22:33:05,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:00" (2/3) ... [2021-11-03 22:33:05,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30656cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:33:05, skipping insertion in model container [2021-11-03 22:33:05,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:33:05" (3/3) ... [2021-11-03 22:33:05,567 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2021-11-03 22:33:05,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 22:33:05,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-03 22:33:05,606 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 22:33:05,611 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 [2021-11-03 22:33:05,611 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-03 22:33:05,625 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) [2021-11-03 22:33:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 22:33:05,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:05,631 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] [2021-11-03 22:33:05,632 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)] === [2021-11-03 22:33:05,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:05,635 INFO L85 PathProgramCache]: Analyzing trace with hash 733514216, now seen corresponding path program 1 times [2021-11-03 22:33:05,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:05,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200115600] [2021-11-03 22:33:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:05,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:06,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:06,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200115600] [2021-11-03 22:33:06,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200115600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:06,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:06,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 22:33:06,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003501220] [2021-11-03 22:33:06,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:06,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 22:33:06,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:06,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 22:33:06,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:33:06,131 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) [2021-11-03 22:33:08,195 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 [] [2021-11-03 22:33:09,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:09,178 INFO L93 Difference]: Finished difference Result 368 states and 511 transitions. [2021-11-03 22:33:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 22:33:09,180 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 [2021-11-03 22:33:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:09,186 INFO L225 Difference]: With dead ends: 368 [2021-11-03 22:33:09,186 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 22:33:09,188 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 [2021-11-03 22:33:09,190 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2723.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2981.99ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:09,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 1 Unknown, 0 Unchecked, 2981.99ms Time] [2021-11-03 22:33:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 22:33:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-03 22:33:09,227 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) [2021-11-03 22:33:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2021-11-03 22:33:09,230 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 39 [2021-11-03 22:33:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:09,230 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2021-11-03 22:33:09,230 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) [2021-11-03 22:33:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2021-11-03 22:33:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 22:33:09,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:09,232 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] [2021-11-03 22:33:09,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 22:33:09,232 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)] === [2021-11-03 22:33:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:09,233 INFO L85 PathProgramCache]: Analyzing trace with hash 699508844, now seen corresponding path program 1 times [2021-11-03 22:33:09,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:09,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578811253] [2021-11-03 22:33:09,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:09,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:09,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:09,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578811253] [2021-11-03 22:33:09,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578811253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:09,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:09,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:33:09,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649127575] [2021-11-03 22:33:09,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:09,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:33:09,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:33:09,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:33:09,508 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) [2021-11-03 22:33:11,557 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 [] [2021-11-03 22:33:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:12,751 INFO L93 Difference]: Finished difference Result 336 states and 428 transitions. [2021-11-03 22:33:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:33:12,751 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 [2021-11-03 22:33:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:12,753 INFO L225 Difference]: With dead ends: 336 [2021-11-03 22:33:12,753 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 22:33:12,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:33:12,754 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2919.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.74ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3172.68ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:12,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 351 Unknown, 0 Unchecked, 8.74ms Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3172.68ms Time] [2021-11-03 22:33:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 22:33:12,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-03 22:33:12,762 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) [2021-11-03 22:33:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 228 transitions. [2021-11-03 22:33:12,763 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 228 transitions. Word has length 39 [2021-11-03 22:33:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:12,764 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 228 transitions. [2021-11-03 22:33:12,764 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) [2021-11-03 22:33:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 228 transitions. [2021-11-03 22:33:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 22:33:12,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:12,765 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] [2021-11-03 22:33:12,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 22:33:12,766 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)] === [2021-11-03 22:33:12,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1277536330, now seen corresponding path program 1 times [2021-11-03 22:33:12,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:12,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883411067] [2021-11-03 22:33:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:12,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:13,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:13,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883411067] [2021-11-03 22:33:13,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883411067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:13,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:13,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:33:13,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499202651] [2021-11-03 22:33:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:13,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:33:13,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:33:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:33:13,009 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) [2021-11-03 22:33:15,051 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 [] [2021-11-03 22:33:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:16,842 INFO L93 Difference]: Finished difference Result 397 states and 508 transitions. [2021-11-03 22:33:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:33:16,842 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 [2021-11-03 22:33:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:16,844 INFO L225 Difference]: With dead ends: 397 [2021-11-03 22:33:16,844 INFO L226 Difference]: Without dead ends: 241 [2021-11-03 22:33:16,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:33:16,845 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3499.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.82ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3769.77ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:16,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 7.82ms Time], IncrementalHoareTripleChecker [21 Valid, 699 Invalid, 1 Unknown, 0 Unchecked, 3769.77ms Time] [2021-11-03 22:33:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-03 22:33:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 193. [2021-11-03 22:33:16,855 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) [2021-11-03 22:33:16,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 240 transitions. [2021-11-03 22:33:16,856 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 240 transitions. Word has length 51 [2021-11-03 22:33:16,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:16,856 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 240 transitions. [2021-11-03 22:33:16,856 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) [2021-11-03 22:33:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 240 transitions. [2021-11-03 22:33:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 22:33:16,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:16,858 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] [2021-11-03 22:33:16,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 22:33:16,858 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)] === [2021-11-03 22:33:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1671903116, now seen corresponding path program 1 times [2021-11-03 22:33:16,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:16,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090211707] [2021-11-03 22:33:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:16,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:17,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:17,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090211707] [2021-11-03 22:33:17,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090211707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:17,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:17,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:33:17,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236922565] [2021-11-03 22:33:17,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:17,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:33:17,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:17,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:33:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:33:17,182 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) [2021-11-03 22:33:19,224 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 [] [2021-11-03 22:33:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:20,383 INFO L93 Difference]: Finished difference Result 314 states and 387 transitions. [2021-11-03 22:33:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:33:20,384 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 [2021-11-03 22:33:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:20,385 INFO L225 Difference]: With dead ends: 314 [2021-11-03 22:33:20,385 INFO L226 Difference]: Without dead ends: 193 [2021-11-03 22:33:20,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 95.88ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:33:20,386 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 482 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2871.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3112.45ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:20,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [5 Valid, 381 Invalid, 1 Unknown, 0 Unchecked, 3112.45ms Time] [2021-11-03 22:33:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-03 22:33:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-03 22:33:20,401 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) [2021-11-03 22:33:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 239 transitions. [2021-11-03 22:33:20,403 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 239 transitions. Word has length 51 [2021-11-03 22:33:20,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:20,403 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 239 transitions. [2021-11-03 22:33:20,403 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) [2021-11-03 22:33:20,404 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 239 transitions. [2021-11-03 22:33:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 22:33:20,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:20,408 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] [2021-11-03 22:33:20,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 22:33:20,408 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)] === [2021-11-03 22:33:20,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1284348023, now seen corresponding path program 1 times [2021-11-03 22:33:20,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:20,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711540917] [2021-11-03 22:33:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:20,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:20,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:20,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711540917] [2021-11-03 22:33:20,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711540917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:20,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:20,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:33:20,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509734131] [2021-11-03 22:33:20,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:20,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:33:20,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:20,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:33:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:33:20,669 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) [2021-11-03 22:33:22,729 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 [] [2021-11-03 22:33:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:24,463 INFO L93 Difference]: Finished difference Result 265 states and 320 transitions. [2021-11-03 22:33:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:33:24,464 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 [2021-11-03 22:33:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:24,465 INFO L225 Difference]: With dead ends: 265 [2021-11-03 22:33:24,465 INFO L226 Difference]: Without dead ends: 193 [2021-11-03 22:33:24,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 218.33ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:33:24,466 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 624 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3330.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.48ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3596.04ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:24,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 0 Invalid, 447 Unknown, 0 Unchecked, 8.48ms Time], IncrementalHoareTripleChecker [6 Valid, 440 Invalid, 1 Unknown, 0 Unchecked, 3596.04ms Time] [2021-11-03 22:33:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-03 22:33:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-03 22:33:24,476 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) [2021-11-03 22:33:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 237 transitions. [2021-11-03 22:33:24,477 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 237 transitions. Word has length 57 [2021-11-03 22:33:24,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:24,477 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 237 transitions. [2021-11-03 22:33:24,477 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) [2021-11-03 22:33:24,477 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 237 transitions. [2021-11-03 22:33:24,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 22:33:24,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:24,478 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] [2021-11-03 22:33:24,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 22:33:24,479 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)] === [2021-11-03 22:33:24,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:24,479 INFO L85 PathProgramCache]: Analyzing trace with hash 718341164, now seen corresponding path program 1 times [2021-11-03 22:33:24,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:24,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033004094] [2021-11-03 22:33:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:24,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:25,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:25,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033004094] [2021-11-03 22:33:25,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033004094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:25,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:25,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:33:25,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365238876] [2021-11-03 22:33:25,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:25,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:33:25,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:33:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:33:25,077 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) [2021-11-03 22:33:27,128 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 [] [2021-11-03 22:33:29,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:29,752 INFO L93 Difference]: Finished difference Result 310 states and 367 transitions. [2021-11-03 22:33:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:33:29,752 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 [2021-11-03 22:33:29,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:29,754 INFO L225 Difference]: With dead ends: 310 [2021-11-03 22:33:29,754 INFO L226 Difference]: Without dead ends: 297 [2021-11-03 22:33:29,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 211.03ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:33:29,755 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 228 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4198.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.44ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4524.15ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:29,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 0 Invalid, 1048 Unknown, 0 Unchecked, 9.44ms Time], IncrementalHoareTripleChecker [40 Valid, 1007 Invalid, 1 Unknown, 0 Unchecked, 4524.15ms Time] [2021-11-03 22:33:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-03 22:33:29,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 199. [2021-11-03 22:33:29,759 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) [2021-11-03 22:33:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 242 transitions. [2021-11-03 22:33:29,759 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 242 transitions. Word has length 63 [2021-11-03 22:33:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:29,760 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 242 transitions. [2021-11-03 22:33:29,760 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) [2021-11-03 22:33:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 242 transitions. [2021-11-03 22:33:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:33:29,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:29,760 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] [2021-11-03 22:33:29,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 22:33:29,761 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)] === [2021-11-03 22:33:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:29,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1235696670, now seen corresponding path program 1 times [2021-11-03 22:33:29,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:29,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298756972] [2021-11-03 22:33:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:29,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:29,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:29,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298756972] [2021-11-03 22:33:29,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298756972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:29,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:29,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:33:29,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490882907] [2021-11-03 22:33:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:29,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:33:29,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:33:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:33:29,947 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) [2021-11-03 22:33:31,990 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 [] [2021-11-03 22:33:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:34,500 INFO L93 Difference]: Finished difference Result 595 states and 724 transitions. [2021-11-03 22:33:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:33:34,501 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 [2021-11-03 22:33:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:34,502 INFO L225 Difference]: With dead ends: 595 [2021-11-03 22:33:34,502 INFO L226 Difference]: Without dead ends: 418 [2021-11-03 22:33:34,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 90.85ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:33:34,503 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 386 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4137.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.84ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4447.65ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:34,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 0 Invalid, 863 Unknown, 0 Unchecked, 9.84ms Time], IncrementalHoareTripleChecker [27 Valid, 835 Invalid, 1 Unknown, 0 Unchecked, 4447.65ms Time] [2021-11-03 22:33:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-03 22:33:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 239. [2021-11-03 22:33:34,508 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) [2021-11-03 22:33:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 293 transitions. [2021-11-03 22:33:34,509 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 293 transitions. Word has length 67 [2021-11-03 22:33:34,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:34,509 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 293 transitions. [2021-11-03 22:33:34,510 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) [2021-11-03 22:33:34,510 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 293 transitions. [2021-11-03 22:33:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:33:34,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:34,510 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] [2021-11-03 22:33:34,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 22:33:34,511 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)] === [2021-11-03 22:33:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash -555638300, now seen corresponding path program 1 times [2021-11-03 22:33:34,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:34,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042080814] [2021-11-03 22:33:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:34,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:34,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:34,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042080814] [2021-11-03 22:33:34,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042080814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:34,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:34,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:33:34,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181120351] [2021-11-03 22:33:34,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:34,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:33:34,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:33:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:33:34,946 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) [2021-11-03 22:33:36,988 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 [] [2021-11-03 22:33:43,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:43,123 INFO L93 Difference]: Finished difference Result 561 states and 678 transitions. [2021-11-03 22:33:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:33:43,123 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 [2021-11-03 22:33:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:43,125 INFO L225 Difference]: With dead ends: 561 [2021-11-03 22:33:43,125 INFO L226 Difference]: Without dead ends: 483 [2021-11-03 22:33:43,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1034.11ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:33:43,126 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1197 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6823.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.48ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7257.40ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:43,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 0 Invalid, 2141 Unknown, 0 Unchecked, 18.48ms Time], IncrementalHoareTripleChecker [69 Valid, 2071 Invalid, 1 Unknown, 0 Unchecked, 7257.40ms Time] [2021-11-03 22:33:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-03 22:33:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 259. [2021-11-03 22:33:43,131 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) [2021-11-03 22:33:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 319 transitions. [2021-11-03 22:33:43,132 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 319 transitions. Word has length 67 [2021-11-03 22:33:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:43,132 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 319 transitions. [2021-11-03 22:33:43,132 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) [2021-11-03 22:33:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 319 transitions. [2021-11-03 22:33:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:33:43,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:43,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:33:43,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 22:33:43,133 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)] === [2021-11-03 22:33:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:43,134 INFO L85 PathProgramCache]: Analyzing trace with hash -813803738, now seen corresponding path program 1 times [2021-11-03 22:33:43,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:43,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392313438] [2021-11-03 22:33:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:43,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:43,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:43,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392313438] [2021-11-03 22:33:43,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392313438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:43,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:43,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:33:43,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044670973] [2021-11-03 22:33:43,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:43,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:33:43,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:43,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:33:43,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:33:43,747 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) [2021-11-03 22:33:45,795 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 [] [2021-11-03 22:33:49,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:49,845 INFO L93 Difference]: Finished difference Result 532 states and 641 transitions. [2021-11-03 22:33:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:33:49,846 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 [2021-11-03 22:33:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:49,847 INFO L225 Difference]: With dead ends: 532 [2021-11-03 22:33:49,847 INFO L226 Difference]: Without dead ends: 395 [2021-11-03 22:33:49,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 854.10ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:33:49,848 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 749 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5032.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.55ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5389.28ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:49,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 9.55ms Time], IncrementalHoareTripleChecker [36 Valid, 1196 Invalid, 1 Unknown, 0 Unchecked, 5389.28ms Time] [2021-11-03 22:33:49,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-03 22:33:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 259. [2021-11-03 22:33:49,853 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) [2021-11-03 22:33:49,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 318 transitions. [2021-11-03 22:33:49,853 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 318 transitions. Word has length 67 [2021-11-03 22:33:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:49,854 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 318 transitions. [2021-11-03 22:33:49,854 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) [2021-11-03 22:33:49,854 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 318 transitions. [2021-11-03 22:33:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:33:49,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:49,854 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] [2021-11-03 22:33:49,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 22:33:49,855 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)] === [2021-11-03 22:33:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1892815656, now seen corresponding path program 1 times [2021-11-03 22:33:49,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:49,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61702834] [2021-11-03 22:33:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:49,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:52,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:52,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61702834] [2021-11-03 22:33:52,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61702834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:52,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:52,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:33:52,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049964858] [2021-11-03 22:33:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:52,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:33:52,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:52,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:33:52,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:33:52,343 INFO L87 Difference]: Start difference. First operand 259 states and 318 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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) [2021-11-03 22:33:54,385 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 [] [2021-11-03 22:33:59,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:59,956 INFO L93 Difference]: Finished difference Result 493 states and 593 transitions. [2021-11-03 22:33:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 22:33:59,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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 [2021-11-03 22:33:59,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:59,958 INFO L225 Difference]: With dead ends: 493 [2021-11-03 22:33:59,958 INFO L226 Difference]: Without dead ends: 402 [2021-11-03 22:33:59,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1270.60ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-03 22:33:59,959 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1239 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6200.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.79ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6639.16ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:59,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 0 Invalid, 1648 Unknown, 0 Unchecked, 21.79ms Time], IncrementalHoareTripleChecker [45 Valid, 1602 Invalid, 1 Unknown, 0 Unchecked, 6639.16ms Time] [2021-11-03 22:33:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-03 22:33:59,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 294. [2021-11-03 22:33:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 283 states have (on average 1.2720848056537102) internal successors, (360), 293 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 360 transitions. [2021-11-03 22:33:59,966 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 360 transitions. Word has length 67 [2021-11-03 22:33:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:59,966 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 360 transitions. [2021-11-03 22:33:59,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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) [2021-11-03 22:33:59,966 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 360 transitions. [2021-11-03 22:33:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:33:59,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:59,967 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] [2021-11-03 22:33:59,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 22:33:59,967 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)] === [2021-11-03 22:33:59,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:59,967 INFO L85 PathProgramCache]: Analyzing trace with hash 459805474, now seen corresponding path program 1 times [2021-11-03 22:33:59,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:59,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774255335] [2021-11-03 22:33:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:59,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:00,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:00,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774255335] [2021-11-03 22:34:00,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774255335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:00,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:00,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:34:00,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409206802] [2021-11-03 22:34:00,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:00,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:34:00,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:00,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:34:00,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:34:00,578 INFO L87 Difference]: Start difference. First operand 294 states and 360 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2021-11-03 22:34:02,621 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 [] [2021-11-03 22:34:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:13,722 INFO L93 Difference]: Finished difference Result 947 states and 1144 transitions. [2021-11-03 22:34:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-03 22:34:13,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 [2021-11-03 22:34:13,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:13,725 INFO L225 Difference]: With dead ends: 947 [2021-11-03 22:34:13,725 INFO L226 Difference]: Without dead ends: 686 [2021-11-03 22:34:13,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3126.21ms TimeCoverageRelationStatistics Valid=333, Invalid=999, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 22:34:13,726 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1485 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 145 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9560.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.16ms SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10163.61ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:13,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 0 Invalid, 3008 Unknown, 0 Unchecked, 26.16ms Time], IncrementalHoareTripleChecker [145 Valid, 2862 Invalid, 1 Unknown, 0 Unchecked, 10163.61ms Time] [2021-11-03 22:34:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-11-03 22:34:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 317. [2021-11-03 22:34:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 306 states have (on average 1.2712418300653594) internal successors, (389), 316 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 389 transitions. [2021-11-03 22:34:13,735 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 389 transitions. Word has length 67 [2021-11-03 22:34:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:13,735 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 389 transitions. [2021-11-03 22:34:13,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2021-11-03 22:34:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 389 transitions. [2021-11-03 22:34:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:34:13,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:13,737 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] [2021-11-03 22:34:13,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 22:34:13,737 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)] === [2021-11-03 22:34:13,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:13,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1139863844, now seen corresponding path program 1 times [2021-11-03 22:34:13,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:13,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188993610] [2021-11-03 22:34:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:13,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:15,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:15,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188993610] [2021-11-03 22:34:15,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188993610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:15,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:15,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:34:15,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958510495] [2021-11-03 22:34:15,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:15,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:34:15,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:34:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:34:15,907 INFO L87 Difference]: Start difference. First operand 317 states and 389 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2021-11-03 22:34:17,954 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 [] [2021-11-03 22:34:22,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:22,420 INFO L93 Difference]: Finished difference Result 627 states and 755 transitions. [2021-11-03 22:34:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:34:22,421 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 [2021-11-03 22:34:22,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:22,422 INFO L225 Difference]: With dead ends: 627 [2021-11-03 22:34:22,422 INFO L226 Difference]: Without dead ends: 495 [2021-11-03 22:34:22,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 700.84ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:34:22,423 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 958 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5741.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.79ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6057.76ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:22,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [958 Valid, 0 Invalid, 1545 Unknown, 0 Unchecked, 10.79ms Time], IncrementalHoareTripleChecker [43 Valid, 1501 Invalid, 1 Unknown, 0 Unchecked, 6057.76ms Time] [2021-11-03 22:34:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-03 22:34:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 384. [2021-11-03 22:34:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 373 states have (on average 1.2493297587131367) internal successors, (466), 383 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 466 transitions. [2021-11-03 22:34:22,452 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 466 transitions. Word has length 67 [2021-11-03 22:34:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:22,452 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 466 transitions. [2021-11-03 22:34:22,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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) [2021-11-03 22:34:22,452 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 466 transitions. [2021-11-03 22:34:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:34:22,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:22,453 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] [2021-11-03 22:34:22,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 22:34:22,454 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)] === [2021-11-03 22:34:22,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1768900058, now seen corresponding path program 1 times [2021-11-03 22:34:22,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:22,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368269641] [2021-11-03 22:34:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:22,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:22,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:22,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368269641] [2021-11-03 22:34:22,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368269641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:22,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:22,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:34:22,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89196637] [2021-11-03 22:34:22,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:22,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:34:22,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:22,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:34:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:34:22,672 INFO L87 Difference]: Start difference. First operand 384 states and 466 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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) [2021-11-03 22:34:24,722 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 [] [2021-11-03 22:34:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:27,778 INFO L93 Difference]: Finished difference Result 741 states and 897 transitions. [2021-11-03 22:34:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:34:27,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 [2021-11-03 22:34:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:27,780 INFO L225 Difference]: With dead ends: 741 [2021-11-03 22:34:27,780 INFO L226 Difference]: Without dead ends: 384 [2021-11-03 22:34:27,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:34:27,781 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4678.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.70ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5032.01ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:27,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 875 Unknown, 0 Unchecked, 6.70ms Time], IncrementalHoareTripleChecker [21 Valid, 853 Invalid, 1 Unknown, 0 Unchecked, 5032.01ms Time] [2021-11-03 22:34:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-03 22:34:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 307. [2021-11-03 22:34:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 296 states have (on average 1.2195945945945945) internal successors, (361), 306 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 361 transitions. [2021-11-03 22:34:27,789 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 361 transitions. Word has length 67 [2021-11-03 22:34:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:27,790 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 361 transitions. [2021-11-03 22:34:27,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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) [2021-11-03 22:34:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 361 transitions. [2021-11-03 22:34:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 22:34:27,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:27,791 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] [2021-11-03 22:34:27,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 22:34:27,793 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:34:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:27,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1970832183, now seen corresponding path program 1 times [2021-11-03 22:34:27,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:27,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32308313] [2021-11-03 22:34:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:27,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:28,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:28,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32308313] [2021-11-03 22:34:28,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32308313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:28,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:28,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:34:28,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149583370] [2021-11-03 22:34:28,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:28,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:34:28,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:28,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:34:28,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:34:28,055 INFO L87 Difference]: Start difference. First operand 307 states and 361 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:30,097 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 [] [2021-11-03 22:34:32,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:32,860 INFO L93 Difference]: Finished difference Result 394 states and 460 transitions. [2021-11-03 22:34:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:34:32,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-03 22:34:32,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:32,862 INFO L225 Difference]: With dead ends: 394 [2021-11-03 22:34:32,862 INFO L226 Difference]: Without dead ends: 358 [2021-11-03 22:34:32,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.90ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:34:32,863 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4361.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4709.60ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:32,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 894 Unknown, 0 Unchecked, 5.97ms Time], IncrementalHoareTripleChecker [2 Valid, 891 Invalid, 1 Unknown, 0 Unchecked, 4709.60ms Time] [2021-11-03 22:34:32,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-03 22:34:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 310. [2021-11-03 22:34:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 299 states have (on average 1.2173913043478262) internal successors, (364), 309 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 364 transitions. [2021-11-03 22:34:32,870 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 364 transitions. Word has length 68 [2021-11-03 22:34:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:32,870 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 364 transitions. [2021-11-03 22:34:32,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 364 transitions. [2021-11-03 22:34:32,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 22:34:32,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:32,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:32,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 22:34:32,873 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:34:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash -965360329, now seen corresponding path program 1 times [2021-11-03 22:34:32,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:32,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795669953] [2021-11-03 22:34:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:32,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:33,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:33,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795669953] [2021-11-03 22:34:33,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795669953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:33,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:33,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:34:33,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139530117] [2021-11-03 22:34:33,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:33,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:34:33,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:34:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:34:33,364 INFO L87 Difference]: Start difference. First operand 310 states and 364 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:35,413 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 [] [2021-11-03 22:34:37,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:37,538 INFO L93 Difference]: Finished difference Result 334 states and 392 transitions. [2021-11-03 22:34:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:34:37,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-03 22:34:37,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:37,540 INFO L225 Difference]: With dead ends: 334 [2021-11-03 22:34:37,540 INFO L226 Difference]: Without dead ends: 332 [2021-11-03 22:34:37,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 267.26ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:34:37,540 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3719.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4012.68ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:37,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 673 Unknown, 0 Unchecked, 4.97ms Time], IncrementalHoareTripleChecker [2 Valid, 670 Invalid, 1 Unknown, 0 Unchecked, 4012.68ms Time] [2021-11-03 22:34:37,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-03 22:34:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 308. [2021-11-03 22:34:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 298 states have (on average 1.2147651006711409) internal successors, (362), 307 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 362 transitions. [2021-11-03 22:34:37,548 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 362 transitions. Word has length 69 [2021-11-03 22:34:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:37,548 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 362 transitions. [2021-11-03 22:34:37,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:37,549 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 362 transitions. [2021-11-03 22:34:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 22:34:37,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:37,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:37,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 22:34:37,550 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:34:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1798297, now seen corresponding path program 1 times [2021-11-03 22:34:37,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:37,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285098518] [2021-11-03 22:34:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:37,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:39,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:39,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285098518] [2021-11-03 22:34:39,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285098518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:39,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:39,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:34:39,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130032943] [2021-11-03 22:34:39,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:39,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:34:39,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:39,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:34:39,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:34:39,040 INFO L87 Difference]: Start difference. First operand 308 states and 362 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:41,554 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 [] [2021-11-03 22:34:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:56,797 INFO L93 Difference]: Finished difference Result 777 states and 911 transitions. [2021-11-03 22:34:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 22:34:56,797 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 22:34:56,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:56,799 INFO L225 Difference]: With dead ends: 777 [2021-11-03 22:34:56,800 INFO L226 Difference]: Without dead ends: 775 [2021-11-03 22:34:56,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 4975.95ms TimeCoverageRelationStatistics Valid=341, Invalid=1639, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 22:34:56,801 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1818 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 3791 mSolverCounterSat, 100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12679.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.08ms SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13446.69ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:56,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1818 Valid, 0 Invalid, 3892 Unknown, 0 Unchecked, 36.08ms Time], IncrementalHoareTripleChecker [100 Valid, 3791 Invalid, 1 Unknown, 0 Unchecked, 13446.69ms Time] [2021-11-03 22:34:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-03 22:34:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 410. [2021-11-03 22:34:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 400 states have (on average 1.2125) internal successors, (485), 409 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 485 transitions. [2021-11-03 22:34:56,814 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 485 transitions. Word has length 71 [2021-11-03 22:34:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:56,815 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 485 transitions. [2021-11-03 22:34:56,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 485 transitions. [2021-11-03 22:34:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 22:34:56,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:56,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:56,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 22:34:56,817 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)] === [2021-11-03 22:34:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash -587952146, now seen corresponding path program 1 times [2021-11-03 22:34:56,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:56,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612907493] [2021-11-03 22:34:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:56,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:57,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:57,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612907493] [2021-11-03 22:34:57,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612907493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:57,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:57,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:34:57,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280018984] [2021-11-03 22:34:57,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:57,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:34:57,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:57,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:34:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:34:57,226 INFO L87 Difference]: Start difference. First operand 410 states and 485 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:34:59,268 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 [] [2021-11-03 22:35:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:03,940 INFO L93 Difference]: Finished difference Result 891 states and 1037 transitions. [2021-11-03 22:35:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:35:03,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 22:35:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:03,942 INFO L225 Difference]: With dead ends: 891 [2021-11-03 22:35:03,942 INFO L226 Difference]: Without dead ends: 487 [2021-11-03 22:35:03,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 183.66ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:35:03,943 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6136.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.50ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6550.59ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:03,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 1596 Unknown, 0 Unchecked, 10.50ms Time], IncrementalHoareTripleChecker [36 Valid, 1559 Invalid, 1 Unknown, 0 Unchecked, 6550.59ms Time] [2021-11-03 22:35:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-11-03 22:35:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 410. [2021-11-03 22:35:03,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 400 states have (on average 1.1925) internal successors, (477), 409 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) [2021-11-03 22:35:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 477 transitions. [2021-11-03 22:35:03,954 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 477 transitions. Word has length 71 [2021-11-03 22:35:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:03,954 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 477 transitions. [2021-11-03 22:35:03,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 477 transitions. [2021-11-03 22:35:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:35:03,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:03,955 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] [2021-11-03 22:35:03,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 22:35:03,956 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:35:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1728302235, now seen corresponding path program 1 times [2021-11-03 22:35:03,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:03,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333296007] [2021-11-03 22:35:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:03,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:07,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:07,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333296007] [2021-11-03 22:35:07,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333296007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:07,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:07,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:35:07,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058188577] [2021-11-03 22:35:07,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:07,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:35:07,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:07,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:35:07,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:35:07,594 INFO L87 Difference]: Start difference. First operand 410 states and 477 transitions. Second operand has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:09,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:22,966 INFO L93 Difference]: Finished difference Result 822 states and 955 transitions. [2021-11-03 22:35:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-03 22:35:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 22:35:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:22,969 INFO L225 Difference]: With dead ends: 822 [2021-11-03 22:35:22,969 INFO L226 Difference]: Without dead ends: 820 [2021-11-03 22:35:22,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 3713.71ms TimeCoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2021-11-03 22:35:22,970 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1919 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 3274 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11451.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.14ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12184.61ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:22,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1919 Valid, 0 Invalid, 3353 Unknown, 0 Unchecked, 35.14ms Time], IncrementalHoareTripleChecker [78 Valid, 3274 Invalid, 1 Unknown, 0 Unchecked, 12184.61ms Time] [2021-11-03 22:35:22,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-11-03 22:35:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 536. [2021-11-03 22:35:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 526 states have (on average 1.1901140684410647) internal successors, (626), 535 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 626 transitions. [2021-11-03 22:35:22,998 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 626 transitions. Word has length 73 [2021-11-03 22:35:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:22,998 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 626 transitions. [2021-11-03 22:35:22,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 626 transitions. [2021-11-03 22:35:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:35:23,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:23,000 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] [2021-11-03 22:35:23,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 22:35:23,000 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)] === [2021-11-03 22:35:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 643950291, now seen corresponding path program 1 times [2021-11-03 22:35:23,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:23,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116046393] [2021-11-03 22:35:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:23,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:23,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:23,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116046393] [2021-11-03 22:35:23,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116046393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:23,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:23,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:35:23,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263287675] [2021-11-03 22:35:23,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:23,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:35:23,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:23,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:35:23,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:35:23,176 INFO L87 Difference]: Start difference. First operand 536 states and 626 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:25,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:27,121 INFO L93 Difference]: Finished difference Result 880 states and 1022 transitions. [2021-11-03 22:35:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:35:27,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 22:35:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:27,123 INFO L225 Difference]: With dead ends: 880 [2021-11-03 22:35:27,123 INFO L226 Difference]: Without dead ends: 340 [2021-11-03 22:35:27,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.38ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:35:27,124 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3636.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3894.41ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:27,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 674 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [18 Valid, 655 Invalid, 1 Unknown, 0 Unchecked, 3894.41ms Time] [2021-11-03 22:35:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-03 22:35:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 322. [2021-11-03 22:35:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 312 states have (on average 1.1602564102564104) internal successors, (362), 321 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 362 transitions. [2021-11-03 22:35:27,135 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 362 transitions. Word has length 73 [2021-11-03 22:35:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:27,135 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 362 transitions. [2021-11-03 22:35:27,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 362 transitions. [2021-11-03 22:35:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:35:27,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:27,151 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] [2021-11-03 22:35:27,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 22:35:27,152 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)] === [2021-11-03 22:35:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1551439317, now seen corresponding path program 1 times [2021-11-03 22:35:27,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:27,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617594921] [2021-11-03 22:35:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:27,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:27,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:27,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617594921] [2021-11-03 22:35:27,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617594921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:27,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:27,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:35:27,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970532895] [2021-11-03 22:35:27,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:27,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:35:27,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:27,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:35:27,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:35:27,574 INFO L87 Difference]: Start difference. First operand 322 states and 362 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:29,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:34,470 INFO L93 Difference]: Finished difference Result 517 states and 581 transitions. [2021-11-03 22:35:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:35:34,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 22:35:34,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:34,472 INFO L225 Difference]: With dead ends: 517 [2021-11-03 22:35:34,472 INFO L226 Difference]: Without dead ends: 453 [2021-11-03 22:35:34,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 350.57ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:35:34,473 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 380 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6191.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.41ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6658.53ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:34,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 0 Invalid, 1740 Unknown, 0 Unchecked, 10.41ms Time], IncrementalHoareTripleChecker [16 Valid, 1723 Invalid, 1 Unknown, 0 Unchecked, 6658.53ms Time] [2021-11-03 22:35:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-03 22:35:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 337. [2021-11-03 22:35:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 327 states have (on average 1.162079510703364) internal successors, (380), 336 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 380 transitions. [2021-11-03 22:35:34,482 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 380 transitions. Word has length 73 [2021-11-03 22:35:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:34,482 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 380 transitions. [2021-11-03 22:35:34,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 380 transitions. [2021-11-03 22:35:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:35:34,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:34,483 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] [2021-11-03 22:35:34,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 22:35:34,484 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)] === [2021-11-03 22:35:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1293273879, now seen corresponding path program 1 times [2021-11-03 22:35:34,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:34,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740843700] [2021-11-03 22:35:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:34,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:34,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:34,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740843700] [2021-11-03 22:35:34,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740843700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:34,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:34,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:35:34,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552930191] [2021-11-03 22:35:34,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:34,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:35:34,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:34,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:35:34,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:35:34,891 INFO L87 Difference]: Start difference. First operand 337 states and 380 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:36,933 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 [] [2021-11-03 22:35:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:40,686 INFO L93 Difference]: Finished difference Result 588 states and 665 transitions. [2021-11-03 22:35:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:35:40,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 22:35:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:40,688 INFO L225 Difference]: With dead ends: 588 [2021-11-03 22:35:40,689 INFO L226 Difference]: Without dead ends: 448 [2021-11-03 22:35:40,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 219.51ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:35:40,690 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 252 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5235.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.45ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5611.20ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:40,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 0 Invalid, 1181 Unknown, 0 Unchecked, 8.45ms Time], IncrementalHoareTripleChecker [11 Valid, 1169 Invalid, 1 Unknown, 0 Unchecked, 5611.20ms Time] [2021-11-03 22:35:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-03 22:35:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 337. [2021-11-03 22:35:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 327 states have (on average 1.1590214067278288) internal successors, (379), 336 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 379 transitions. [2021-11-03 22:35:40,700 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 379 transitions. Word has length 73 [2021-11-03 22:35:40,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:40,701 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 379 transitions. [2021-11-03 22:35:40,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:40,701 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 379 transitions. [2021-11-03 22:35:40,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:35:40,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:40,702 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] [2021-11-03 22:35:40,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 22:35:40,702 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)] === [2021-11-03 22:35:40,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash -295074023, now seen corresponding path program 1 times [2021-11-03 22:35:40,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:40,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843482474] [2021-11-03 22:35:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:40,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:42,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:42,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843482474] [2021-11-03 22:35:42,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843482474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:42,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:42,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:35:42,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372573167] [2021-11-03 22:35:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:42,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:35:42,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:35:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:35:42,870 INFO L87 Difference]: Start difference. First operand 337 states and 379 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:44,910 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 [] [2021-11-03 22:35:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:49,251 INFO L93 Difference]: Finished difference Result 535 states and 597 transitions. [2021-11-03 22:35:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:35:49,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 22:35:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:49,253 INFO L225 Difference]: With dead ends: 535 [2021-11-03 22:35:49,253 INFO L226 Difference]: Without dead ends: 425 [2021-11-03 22:35:49,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 660.59ms TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:35:49,254 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 671 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5549.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.39ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5918.29ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:49,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 0 Invalid, 1727 Unknown, 0 Unchecked, 10.39ms Time], IncrementalHoareTripleChecker [32 Valid, 1694 Invalid, 1 Unknown, 0 Unchecked, 5918.29ms Time] [2021-11-03 22:35:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-03 22:35:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 331. [2021-11-03 22:35:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 321 states have (on average 1.1495327102803738) internal successors, (369), 330 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) [2021-11-03 22:35:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 369 transitions. [2021-11-03 22:35:49,263 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 369 transitions. Word has length 73 [2021-11-03 22:35:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:49,263 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 369 transitions. [2021-11-03 22:35:49,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 369 transitions. [2021-11-03 22:35:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:35:49,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:49,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:35:49,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 22:35:49,265 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)] === [2021-11-03 22:35:49,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:49,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1728084205, now seen corresponding path program 1 times [2021-11-03 22:35:49,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:49,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863523126] [2021-11-03 22:35:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:49,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:49,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:49,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863523126] [2021-11-03 22:35:49,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863523126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:49,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:49,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:35:49,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323600800] [2021-11-03 22:35:49,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:49,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:35:49,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:49,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:35:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:35:49,651 INFO L87 Difference]: Start difference. First operand 331 states and 369 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:51,695 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 [] [2021-11-03 22:35:56,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:56,913 INFO L93 Difference]: Finished difference Result 535 states and 596 transitions. [2021-11-03 22:35:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:35:56,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 22:35:56,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:56,915 INFO L225 Difference]: With dead ends: 535 [2021-11-03 22:35:56,915 INFO L226 Difference]: Without dead ends: 476 [2021-11-03 22:35:56,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 619.01ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:35:56,916 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 512 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6325.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.78ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6746.29ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:56,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 0 Invalid, 1721 Unknown, 0 Unchecked, 10.78ms Time], IncrementalHoareTripleChecker [36 Valid, 1684 Invalid, 1 Unknown, 0 Unchecked, 6746.29ms Time] [2021-11-03 22:35:56,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-03 22:35:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 341. [2021-11-03 22:35:56,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 331 states have (on average 1.151057401812689) internal successors, (381), 340 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 381 transitions. [2021-11-03 22:35:56,925 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 381 transitions. Word has length 73 [2021-11-03 22:35:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:56,925 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 381 transitions. [2021-11-03 22:35:56,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 381 transitions. [2021-11-03 22:35:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:35:56,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:56,926 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] [2021-11-03 22:35:56,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 22:35:56,926 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)] === [2021-11-03 22:35:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1048025835, now seen corresponding path program 1 times [2021-11-03 22:35:56,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:56,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589598819] [2021-11-03 22:35:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:56,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:59,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:59,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589598819] [2021-11-03 22:35:59,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589598819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:59,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:59,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:35:59,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277865357] [2021-11-03 22:35:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:59,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:35:59,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:35:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:35:59,083 INFO L87 Difference]: Start difference. First operand 341 states and 381 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:01,144 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 [] [2021-11-03 22:36:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:04,780 INFO L93 Difference]: Finished difference Result 505 states and 562 transitions. [2021-11-03 22:36:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:36:04,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 22:36:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:04,791 INFO L225 Difference]: With dead ends: 505 [2021-11-03 22:36:04,791 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 22:36:04,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 500.88ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:36:04,791 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 574 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5186.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.80ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5436.21ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:04,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 0 Invalid, 1542 Unknown, 0 Unchecked, 10.80ms Time], IncrementalHoareTripleChecker [26 Valid, 1515 Invalid, 1 Unknown, 0 Unchecked, 5436.21ms Time] [2021-11-03 22:36:04,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 22:36:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 344. [2021-11-03 22:36:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 334 states have (on average 1.1437125748502994) internal successors, (382), 343 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 382 transitions. [2021-11-03 22:36:04,800 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 382 transitions. Word has length 73 [2021-11-03 22:36:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:04,800 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 382 transitions. [2021-11-03 22:36:04,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 382 transitions. [2021-11-03 22:36:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 22:36:04,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:04,801 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] [2021-11-03 22:36:04,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 22:36:04,802 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)] === [2021-11-03 22:36:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1783491731, now seen corresponding path program 1 times [2021-11-03 22:36:04,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:04,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174752578] [2021-11-03 22:36:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:04,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:05,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:05,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174752578] [2021-11-03 22:36:05,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174752578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:05,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:05,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:36:05,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105302237] [2021-11-03 22:36:05,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:05,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:36:05,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:36:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:36:05,663 INFO L87 Difference]: Start difference. First operand 344 states and 382 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:07,708 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 [] [2021-11-03 22:36:17,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:17,709 INFO L93 Difference]: Finished difference Result 698 states and 768 transitions. [2021-11-03 22:36:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 22:36:17,710 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 22:36:17,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:17,711 INFO L225 Difference]: With dead ends: 698 [2021-11-03 22:36:17,711 INFO L226 Difference]: Without dead ends: 461 [2021-11-03 22:36:17,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 3328.13ms TimeCoverageRelationStatistics Valid=309, Invalid=813, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 22:36:17,712 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1040 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8447.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.87ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9048.25ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:17,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 0 Invalid, 2372 Unknown, 0 Unchecked, 22.87ms Time], IncrementalHoareTripleChecker [76 Valid, 2295 Invalid, 1 Unknown, 0 Unchecked, 9048.25ms Time] [2021-11-03 22:36:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-03 22:36:17,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 352. [2021-11-03 22:36:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 342 states have (on average 1.1374269005847952) internal successors, (389), 351 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 389 transitions. [2021-11-03 22:36:17,732 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 389 transitions. Word has length 73 [2021-11-03 22:36:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:17,732 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 389 transitions. [2021-11-03 22:36:17,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 389 transitions. [2021-11-03 22:36:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 22:36:17,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:17,733 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] [2021-11-03 22:36:17,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 22:36:17,733 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:17,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1682212044, now seen corresponding path program 1 times [2021-11-03 22:36:17,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:17,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544148985] [2021-11-03 22:36:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:17,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:18,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:18,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544148985] [2021-11-03 22:36:18,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544148985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:18,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:18,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:36:18,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757644489] [2021-11-03 22:36:18,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:18,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:36:18,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:18,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:36:18,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:36:18,031 INFO L87 Difference]: Start difference. First operand 352 states and 389 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2021-11-03 22:36:20,082 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 [] [2021-11-03 22:36:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:23,821 INFO L93 Difference]: Finished difference Result 821 states and 904 transitions. [2021-11-03 22:36:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:36:23,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 [2021-11-03 22:36:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:23,823 INFO L225 Difference]: With dead ends: 821 [2021-11-03 22:36:23,823 INFO L226 Difference]: Without dead ends: 576 [2021-11-03 22:36:23,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 872.66ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:36:23,824 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 728 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4670.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.63ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4972.49ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:23,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 0 Invalid, 1232 Unknown, 0 Unchecked, 7.63ms Time], IncrementalHoareTripleChecker [54 Valid, 1177 Invalid, 1 Unknown, 0 Unchecked, 4972.49ms Time] [2021-11-03 22:36:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-11-03 22:36:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 352. [2021-11-03 22:36:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 342 states have (on average 1.1345029239766082) internal successors, (388), 351 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 388 transitions. [2021-11-03 22:36:23,833 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 388 transitions. Word has length 74 [2021-11-03 22:36:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:23,834 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 388 transitions. [2021-11-03 22:36:23,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2021-11-03 22:36:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 388 transitions. [2021-11-03 22:36:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:36:23,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:23,835 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] [2021-11-03 22:36:23,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 22:36:23,835 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1253756611, now seen corresponding path program 1 times [2021-11-03 22:36:23,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:23,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838117495] [2021-11-03 22:36:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:23,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:26,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:26,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838117495] [2021-11-03 22:36:26,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838117495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:26,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:26,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:36:26,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557481706] [2021-11-03 22:36:26,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:26,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:36:26,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:26,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:36:26,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:36:26,847 INFO L87 Difference]: Start difference. First operand 352 states and 388 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2021-11-03 22:36:28,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:32,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:32,874 INFO L93 Difference]: Finished difference Result 553 states and 613 transitions. [2021-11-03 22:36:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:36:32,874 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 [2021-11-03 22:36:32,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:32,876 INFO L225 Difference]: With dead ends: 553 [2021-11-03 22:36:32,876 INFO L226 Difference]: Without dead ends: 551 [2021-11-03 22:36:32,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1044.24ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:36:32,876 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 965 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5100.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.32ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5455.42ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:32,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 0 Invalid, 1369 Unknown, 0 Unchecked, 11.32ms Time], IncrementalHoareTripleChecker [19 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 5455.42ms Time] [2021-11-03 22:36:32,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-11-03 22:36:32,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 467. [2021-11-03 22:36:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 457 states have (on average 1.1312910284463895) internal successors, (517), 466 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 517 transitions. [2021-11-03 22:36:32,888 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 517 transitions. Word has length 75 [2021-11-03 22:36:32,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:32,888 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 517 transitions. [2021-11-03 22:36:32,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2021-11-03 22:36:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 517 transitions. [2021-11-03 22:36:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:36:32,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:32,889 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] [2021-11-03 22:36:32,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 22:36:32,889 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)] === [2021-11-03 22:36:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1714451442, now seen corresponding path program 1 times [2021-11-03 22:36:32,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:32,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24390660] [2021-11-03 22:36:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:32,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:33,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:33,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24390660] [2021-11-03 22:36:33,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24390660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:33,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:33,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:36:33,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518783085] [2021-11-03 22:36:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:33,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:36:33,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:36:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:36:33,350 INFO L87 Difference]: Start difference. First operand 467 states and 517 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:35,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:39,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:39,809 INFO L93 Difference]: Finished difference Result 630 states and 695 transitions. [2021-11-03 22:36:39,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 22:36:39,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 22:36:39,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:39,811 INFO L225 Difference]: With dead ends: 630 [2021-11-03 22:36:39,811 INFO L226 Difference]: Without dead ends: 613 [2021-11-03 22:36:39,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 524.21ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:36:39,812 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 247 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 91 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5647.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.93ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6056.59ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:39,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 0 Invalid, 1526 Unknown, 0 Unchecked, 9.93ms Time], IncrementalHoareTripleChecker [91 Valid, 1434 Invalid, 1 Unknown, 0 Unchecked, 6056.59ms Time] [2021-11-03 22:36:39,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-03 22:36:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 473. [2021-11-03 22:36:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 463 states have (on average 1.1274298056155507) internal successors, (522), 472 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 522 transitions. [2021-11-03 22:36:39,839 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 522 transitions. Word has length 75 [2021-11-03 22:36:39,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:39,839 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 522 transitions. [2021-11-03 22:36:39,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:39,839 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 522 transitions. [2021-11-03 22:36:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:36:39,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:39,840 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] [2021-11-03 22:36:39,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 22:36:39,841 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)] === [2021-11-03 22:36:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1771169228, now seen corresponding path program 1 times [2021-11-03 22:36:39,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:39,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785508705] [2021-11-03 22:36:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:39,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:40,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:40,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785508705] [2021-11-03 22:36:40,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785508705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:40,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:40,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:36:40,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117794078] [2021-11-03 22:36:40,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:40,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:36:40,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:40,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:36:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:36:40,099 INFO L87 Difference]: Start difference. First operand 473 states and 522 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) [2021-11-03 22:36:42,156 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 [] [2021-11-03 22:36:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:45,550 INFO L93 Difference]: Finished difference Result 669 states and 741 transitions. [2021-11-03 22:36:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:36:45,550 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 [2021-11-03 22:36:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:45,552 INFO L225 Difference]: With dead ends: 669 [2021-11-03 22:36:45,552 INFO L226 Difference]: Without dead ends: 591 [2021-11-03 22:36:45,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 282.42ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:36:45,553 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 424 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4835.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.04ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5213.42ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:45,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 0 Invalid, 1206 Unknown, 0 Unchecked, 8.04ms Time], IncrementalHoareTripleChecker [23 Valid, 1182 Invalid, 1 Unknown, 0 Unchecked, 5213.42ms Time] [2021-11-03 22:36:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-03 22:36:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 475. [2021-11-03 22:36:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 465 states have (on average 1.1268817204301076) internal successors, (524), 474 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 524 transitions. [2021-11-03 22:36:45,567 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 524 transitions. Word has length 75 [2021-11-03 22:36:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:45,568 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 524 transitions. [2021-11-03 22:36:45,568 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) [2021-11-03 22:36:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 524 transitions. [2021-11-03 22:36:45,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 22:36:45,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:45,575 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] [2021-11-03 22:36:45,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 22:36:45,575 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:45,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash -390197635, now seen corresponding path program 1 times [2021-11-03 22:36:45,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:45,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568089713] [2021-11-03 22:36:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:45,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:45,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:45,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568089713] [2021-11-03 22:36:45,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568089713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:45,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:45,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:36:45,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85823815] [2021-11-03 22:36:45,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:45,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:36:45,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:36:45,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:36:45,971 INFO L87 Difference]: Start difference. First operand 475 states and 524 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) [2021-11-03 22:36:48,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:50,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:50,182 INFO L93 Difference]: Finished difference Result 610 states and 674 transitions. [2021-11-03 22:36:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:36:50,183 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 [2021-11-03 22:36:50,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:50,184 INFO L225 Difference]: With dead ends: 610 [2021-11-03 22:36:50,184 INFO L226 Difference]: Without dead ends: 505 [2021-11-03 22:36:50,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 118.66ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:36:50,185 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 234 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3852.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4121.27ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:50,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 0 Invalid, 751 Unknown, 0 Unchecked, 4.77ms Time], IncrementalHoareTripleChecker [2 Valid, 748 Invalid, 1 Unknown, 0 Unchecked, 4121.27ms Time] [2021-11-03 22:36:50,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-03 22:36:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 449. [2021-11-03 22:36:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 439 states have (on average 1.1275626423690206) internal successors, (495), 448 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:36:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 495 transitions. [2021-11-03 22:36:50,232 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 495 transitions. Word has length 77 [2021-11-03 22:36:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:50,232 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 495 transitions. [2021-11-03 22:36:50,232 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) [2021-11-03 22:36:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 495 transitions. [2021-11-03 22:36:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 22:36:50,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:50,233 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] [2021-11-03 22:36:50,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 22:36:50,233 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:50,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1641839432, now seen corresponding path program 1 times [2021-11-03 22:36:50,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:50,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102358229] [2021-11-03 22:36:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:50,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:51,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:51,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102358229] [2021-11-03 22:36:51,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102358229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:51,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:51,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:36:51,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017412814] [2021-11-03 22:36:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:51,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:36:51,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:36:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:36:51,343 INFO L87 Difference]: Start difference. First operand 449 states and 495 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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) [2021-11-03 22:36:53,392 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 [] [2021-11-03 22:37:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:06,688 INFO L93 Difference]: Finished difference Result 775 states and 851 transitions. [2021-11-03 22:37:06,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-03 22:37:06,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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 [2021-11-03 22:37:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:06,691 INFO L225 Difference]: With dead ends: 775 [2021-11-03 22:37:06,691 INFO L226 Difference]: Without dead ends: 773 [2021-11-03 22:37:06,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 3115.33ms TimeCoverageRelationStatistics Valid=286, Invalid=1274, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 22:37:06,692 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 858 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 4044 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11975.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.49ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4044 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12640.10ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:06,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 0 Invalid, 4115 Unknown, 0 Unchecked, 32.49ms Time], IncrementalHoareTripleChecker [70 Valid, 4044 Invalid, 1 Unknown, 0 Unchecked, 12640.10ms Time] [2021-11-03 22:37:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-11-03 22:37:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 544. [2021-11-03 22:37:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 534 states have (on average 1.1198501872659177) internal successors, (598), 543 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 598 transitions. [2021-11-03 22:37:06,706 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 598 transitions. Word has length 77 [2021-11-03 22:37:06,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:06,706 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 598 transitions. [2021-11-03 22:37:06,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 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) [2021-11-03 22:37:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 598 transitions. [2021-11-03 22:37:06,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 22:37:06,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:06,708 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] [2021-11-03 22:37:06,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 22:37:06,708 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:37:06,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1682514182, now seen corresponding path program 1 times [2021-11-03 22:37:06,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:06,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486264354] [2021-11-03 22:37:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:06,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:07,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:07,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486264354] [2021-11-03 22:37:07,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486264354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:07,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:07,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:37:07,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481728775] [2021-11-03 22:37:07,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:07,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:37:07,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:07,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:37:07,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:37:07,860 INFO L87 Difference]: Start difference. First operand 544 states and 598 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 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) [2021-11-03 22:37:10,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:37:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:23,461 INFO L93 Difference]: Finished difference Result 932 states and 1020 transitions. [2021-11-03 22:37:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 22:37:23,462 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 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 [2021-11-03 22:37:23,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:23,464 INFO L225 Difference]: With dead ends: 932 [2021-11-03 22:37:23,464 INFO L226 Difference]: Without dead ends: 878 [2021-11-03 22:37:23,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 3766.20ms TimeCoverageRelationStatistics Valid=346, Invalid=1376, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 22:37:23,465 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 678 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 4014 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11623.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.10ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 4014 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12261.63ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:23,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 0 Invalid, 4071 Unknown, 0 Unchecked, 29.10ms Time], IncrementalHoareTripleChecker [56 Valid, 4014 Invalid, 1 Unknown, 0 Unchecked, 12261.63ms Time] [2021-11-03 22:37:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-11-03 22:37:23,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 685. [2021-11-03 22:37:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 675 states have (on average 1.1214814814814815) internal successors, (757), 684 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 757 transitions. [2021-11-03 22:37:23,485 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 757 transitions. Word has length 77 [2021-11-03 22:37:23,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:23,485 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 757 transitions. [2021-11-03 22:37:23,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 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) [2021-11-03 22:37:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 757 transitions. [2021-11-03 22:37:23,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 22:37:23,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:23,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:37:23,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 22:37:23,487 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:37:23,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1218221890, now seen corresponding path program 1 times [2021-11-03 22:37:23,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:23,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649435835] [2021-11-03 22:37:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:23,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:24,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:24,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649435835] [2021-11-03 22:37:24,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649435835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:24,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:24,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:37:24,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807073604] [2021-11-03 22:37:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:24,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:37:24,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:37:24,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:37:24,056 INFO L87 Difference]: Start difference. First operand 685 states and 757 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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) [2021-11-03 22:37:26,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:37:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:32,237 INFO L93 Difference]: Finished difference Result 874 states and 958 transitions. [2021-11-03 22:37:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 22:37:32,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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 [2021-11-03 22:37:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:32,240 INFO L225 Difference]: With dead ends: 874 [2021-11-03 22:37:32,240 INFO L226 Difference]: Without dead ends: 842 [2021-11-03 22:37:32,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1616.38ms TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:37:32,241 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 772 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6323.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.52ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6758.01ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:32,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 0 Invalid, 1424 Unknown, 0 Unchecked, 15.52ms Time], IncrementalHoareTripleChecker [46 Valid, 1377 Invalid, 1 Unknown, 0 Unchecked, 6758.01ms Time] [2021-11-03 22:37:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-11-03 22:37:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 731. [2021-11-03 22:37:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 721 states have (on average 1.1248266296809986) internal successors, (811), 730 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 811 transitions. [2021-11-03 22:37:32,269 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 811 transitions. Word has length 79 [2021-11-03 22:37:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:32,270 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 811 transitions. [2021-11-03 22:37:32,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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) [2021-11-03 22:37:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 811 transitions. [2021-11-03 22:37:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 22:37:32,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:32,271 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] [2021-11-03 22:37:32,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 22:37:32,271 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:37:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash -593048963, now seen corresponding path program 1 times [2021-11-03 22:37:32,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:32,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185613924] [2021-11-03 22:37:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:32,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:32,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:32,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185613924] [2021-11-03 22:37:32,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185613924] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 22:37:32,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340046935] [2021-11-03 22:37:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:32,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 22:37:32,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:37:32,853 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) [2021-11-03 22:37:32,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 22:37:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:33,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-03 22:37:33,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:37:33,957 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 [2021-11-03 22:37:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 22:37:34,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 22:37:34,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340046935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:34,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 22:37:34,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2021-11-03 22:37:34,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268348843] [2021-11-03 22:37:34,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:34,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:37:34,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:37:34,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:37:34,668 INFO L87 Difference]: Start difference. First operand 731 states and 811 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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) [2021-11-03 22:37:37,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:37:39,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:39,462 INFO L93 Difference]: Finished difference Result 996 states and 1105 transitions. [2021-11-03 22:37:39,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:37:39,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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 [2021-11-03 22:37:39,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:39,463 INFO L225 Difference]: With dead ends: 996 [2021-11-03 22:37:39,463 INFO L226 Difference]: Without dead ends: 506 [2021-11-03 22:37:39,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 727.35ms TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:37:39,464 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 733 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4174.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.37ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4521.68ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:39,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 0 Invalid, 854 Unknown, 0 Unchecked, 6.37ms Time], IncrementalHoareTripleChecker [12 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 4521.68ms Time] [2021-11-03 22:37:39,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-03 22:37:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-11-03 22:37:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 496 states have (on average 1.1310483870967742) internal successors, (561), 505 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 561 transitions. [2021-11-03 22:37:39,481 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 561 transitions. Word has length 79 [2021-11-03 22:37:39,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:39,481 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 561 transitions. [2021-11-03 22:37:39,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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) [2021-11-03 22:37:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 561 transitions. [2021-11-03 22:37:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 22:37:39,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:39,483 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] [2021-11-03 22:37:39,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 22:37:39,704 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,SelfDestructingSolverStorable33 [2021-11-03 22:37:39,705 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:37:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1530248741, now seen corresponding path program 1 times [2021-11-03 22:37:39,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:39,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464107953] [2021-11-03 22:37:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:39,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:39,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:39,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464107953] [2021-11-03 22:37:39,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464107953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:39,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:39,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:37:39,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026512958] [2021-11-03 22:37:39,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:39,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:37:39,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:39,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:37:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:37:39,927 INFO L87 Difference]: Start difference. First operand 506 states and 561 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 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) [2021-11-03 22:37:41,972 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 [] [2021-11-03 22:37:46,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:46,075 INFO L93 Difference]: Finished difference Result 934 states and 1039 transitions. [2021-11-03 22:37:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:37:46,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 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 80 [2021-11-03 22:37:46,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:46,077 INFO L225 Difference]: With dead ends: 934 [2021-11-03 22:37:46,077 INFO L226 Difference]: Without dead ends: 692 [2021-11-03 22:37:46,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 263.61ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:37:46,078 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 284 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5549.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.75ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5863.20ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:46,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 0 Invalid, 1248 Unknown, 0 Unchecked, 10.75ms Time], IncrementalHoareTripleChecker [15 Valid, 1232 Invalid, 1 Unknown, 0 Unchecked, 5863.20ms Time] [2021-11-03 22:37:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-11-03 22:37:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 506. [2021-11-03 22:37:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 496 states have (on average 1.1290322580645162) internal successors, (560), 505 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:37:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 560 transitions. [2021-11-03 22:37:46,098 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 560 transitions. Word has length 80 [2021-11-03 22:37:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:46,098 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 560 transitions. [2021-11-03 22:37:46,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 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) [2021-11-03 22:37:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 560 transitions. [2021-11-03 22:37:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 22:37:46,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:46,099 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] [2021-11-03 22:37:46,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 22:37:46,100 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:37:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2090948519, now seen corresponding path program 1 times [2021-11-03 22:37:46,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:46,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973348133] [2021-11-03 22:37:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:46,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:49,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:49,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973348133] [2021-11-03 22:37:49,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973348133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:49,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:49,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:37:49,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510323068] [2021-11-03 22:37:49,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:49,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:37:49,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:37:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:37:49,590 INFO L87 Difference]: Start difference. First operand 506 states and 560 transitions. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 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) [2021-11-03 22:37:51,633 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 [] [2021-11-03 22:38:05,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:05,882 INFO L93 Difference]: Finished difference Result 983 states and 1089 transitions. [2021-11-03 22:38:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 22:38:05,882 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 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 80 [2021-11-03 22:38:05,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:05,884 INFO L225 Difference]: With dead ends: 983 [2021-11-03 22:38:05,884 INFO L226 Difference]: Without dead ends: 920 [2021-11-03 22:38:05,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 7045.94ms TimeCoverageRelationStatistics Valid=514, Invalid=1556, Unknown=0, NotChecked=0, Total=2070 [2021-11-03 22:38:05,885 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2759 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 2977 mSolverCounterSat, 101 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9357.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2759 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.76ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9942.65ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:05,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2759 Valid, 0 Invalid, 3079 Unknown, 0 Unchecked, 28.76ms Time], IncrementalHoareTripleChecker [101 Valid, 2977 Invalid, 1 Unknown, 0 Unchecked, 9942.65ms Time] [2021-11-03 22:38:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-03 22:38:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 581. [2021-11-03 22:38:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 571 states have (on average 1.1295971978984238) internal successors, (645), 580 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 645 transitions. [2021-11-03 22:38:05,908 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 645 transitions. Word has length 80 [2021-11-03 22:38:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:05,909 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 645 transitions. [2021-11-03 22:38:05,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 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) [2021-11-03 22:38:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 645 transitions. [2021-11-03 22:38:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:38:05,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:05,910 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] [2021-11-03 22:38:05,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 22:38:05,910 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)] === [2021-11-03 22:38:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash -587839455, now seen corresponding path program 1 times [2021-11-03 22:38:05,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:05,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271932259] [2021-11-03 22:38:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:05,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:06,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:06,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271932259] [2021-11-03 22:38:06,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271932259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:06,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:06,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:38:06,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131347451] [2021-11-03 22:38:06,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:06,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:38:06,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:06,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:38:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:38:06,775 INFO L87 Difference]: Start difference. First operand 581 states and 645 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) [2021-11-03 22:38:08,828 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 [] [2021-11-03 22:38:13,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:13,526 INFO L93 Difference]: Finished difference Result 708 states and 782 transitions. [2021-11-03 22:38:13,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:38:13,526 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 [2021-11-03 22:38:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:13,527 INFO L225 Difference]: With dead ends: 708 [2021-11-03 22:38:13,527 INFO L226 Difference]: Without dead ends: 581 [2021-11-03 22:38:13,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1174.78ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:38:13,528 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 514 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5539.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.84ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5910.63ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:13,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 0 Invalid, 1557 Unknown, 0 Unchecked, 10.84ms Time], IncrementalHoareTripleChecker [33 Valid, 1523 Invalid, 1 Unknown, 0 Unchecked, 5910.63ms Time] [2021-11-03 22:38:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-11-03 22:38:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 554. [2021-11-03 22:38:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 544 states have (on average 1.125) internal successors, (612), 553 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 612 transitions. [2021-11-03 22:38:13,546 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 612 transitions. Word has length 82 [2021-11-03 22:38:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:13,546 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 612 transitions. [2021-11-03 22:38:13,546 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) [2021-11-03 22:38:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 612 transitions. [2021-11-03 22:38:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:38:13,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:13,547 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] [2021-11-03 22:38:13,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 22:38:13,548 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:38:13,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:13,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1191985021, now seen corresponding path program 1 times [2021-11-03 22:38:13,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:13,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203877450] [2021-11-03 22:38:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:13,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:14,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:14,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203877450] [2021-11-03 22:38:14,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203877450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:14,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:14,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:38:14,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809776348] [2021-11-03 22:38:14,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:14,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:38:14,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:14,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:38:14,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:38:14,797 INFO L87 Difference]: Start difference. First operand 554 states and 612 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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) [2021-11-03 22:38:16,841 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 [] [2021-11-03 22:38:23,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:23,604 INFO L93 Difference]: Finished difference Result 900 states and 995 transitions. [2021-11-03 22:38:23,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:38:23,604 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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 [2021-11-03 22:38:23,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:23,606 INFO L225 Difference]: With dead ends: 900 [2021-11-03 22:38:23,607 INFO L226 Difference]: Without dead ends: 834 [2021-11-03 22:38:23,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1710.28ms TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:38:23,607 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 943 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7159.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.00ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7617.94ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:23,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 0 Invalid, 2524 Unknown, 0 Unchecked, 17.00ms Time], IncrementalHoareTripleChecker [50 Valid, 2473 Invalid, 1 Unknown, 0 Unchecked, 7617.94ms Time] [2021-11-03 22:38:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-11-03 22:38:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 599. [2021-11-03 22:38:23,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 589 states have (on average 1.1273344651952462) internal successors, (664), 598 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 664 transitions. [2021-11-03 22:38:23,630 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 664 transitions. Word has length 85 [2021-11-03 22:38:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:23,630 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 664 transitions. [2021-11-03 22:38:23,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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) [2021-11-03 22:38:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 664 transitions. [2021-11-03 22:38:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:38:23,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:23,631 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] [2021-11-03 22:38:23,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 22:38:23,633 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)] === [2021-11-03 22:38:23,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:23,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1247174517, now seen corresponding path program 1 times [2021-11-03 22:38:23,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:23,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516981237] [2021-11-03 22:38:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:23,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:24,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:24,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516981237] [2021-11-03 22:38:24,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516981237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:24,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:24,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:38:24,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950664624] [2021-11-03 22:38:24,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:24,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:38:24,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:38:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:38:24,287 INFO L87 Difference]: Start difference. First operand 599 states and 664 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:26,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:38:30,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:30,639 INFO L93 Difference]: Finished difference Result 755 states and 832 transitions. [2021-11-03 22:38:30,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:38:30,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-03 22:38:30,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:30,641 INFO L225 Difference]: With dead ends: 755 [2021-11-03 22:38:30,641 INFO L226 Difference]: Without dead ends: 570 [2021-11-03 22:38:30,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 703.74ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:38:30,642 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 276 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5469.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.58ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5874.03ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:30,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 0 Invalid, 1193 Unknown, 0 Unchecked, 9.58ms Time], IncrementalHoareTripleChecker [24 Valid, 1168 Invalid, 1 Unknown, 0 Unchecked, 5874.03ms Time] [2021-11-03 22:38:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-11-03 22:38:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 554. [2021-11-03 22:38:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 544 states have (on average 1.1231617647058822) internal successors, (611), 553 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 611 transitions. [2021-11-03 22:38:30,661 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 611 transitions. Word has length 85 [2021-11-03 22:38:30,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:30,661 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 611 transitions. [2021-11-03 22:38:30,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:30,662 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 611 transitions. [2021-11-03 22:38:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:38:30,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:30,662 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] [2021-11-03 22:38:30,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 22:38:30,663 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:38:30,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash 298498683, now seen corresponding path program 1 times [2021-11-03 22:38:30,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:30,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454637483] [2021-11-03 22:38:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:30,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:33,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:33,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454637483] [2021-11-03 22:38:33,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454637483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:33,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:33,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:38:33,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175428819] [2021-11-03 22:38:33,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:33,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:38:33,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:38:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:38:33,515 INFO L87 Difference]: Start difference. First operand 554 states and 611 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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) [2021-11-03 22:38:35,579 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 [] [2021-11-03 22:38:41,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:41,601 INFO L93 Difference]: Finished difference Result 763 states and 843 transitions. [2021-11-03 22:38:41,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:38:41,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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 [2021-11-03 22:38:41,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:41,603 INFO L225 Difference]: With dead ends: 763 [2021-11-03 22:38:41,603 INFO L226 Difference]: Without dead ends: 542 [2021-11-03 22:38:41,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2109.08ms TimeCoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:38:41,604 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 658 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6172.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.76ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6599.97ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:41,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 0 Invalid, 1758 Unknown, 0 Unchecked, 14.76ms Time], IncrementalHoareTripleChecker [36 Valid, 1721 Invalid, 1 Unknown, 0 Unchecked, 6599.97ms Time] [2021-11-03 22:38:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-11-03 22:38:41,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 517. [2021-11-03 22:38:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 507 states have (on average 1.1222879684418146) internal successors, (569), 516 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 569 transitions. [2021-11-03 22:38:41,621 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 569 transitions. Word has length 85 [2021-11-03 22:38:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:41,622 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 569 transitions. [2021-11-03 22:38:41,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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) [2021-11-03 22:38:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 569 transitions. [2021-11-03 22:38:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:38:41,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:41,623 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] [2021-11-03 22:38:41,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 22:38:41,623 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:38:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash 353688179, now seen corresponding path program 1 times [2021-11-03 22:38:41,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:41,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380982327] [2021-11-03 22:38:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:41,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:42,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:42,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380982327] [2021-11-03 22:38:42,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380982327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:42,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:42,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:38:42,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933234849] [2021-11-03 22:38:42,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:42,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:38:42,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:38:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:38:42,368 INFO L87 Difference]: Start difference. First operand 517 states and 569 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) [2021-11-03 22:38:44,422 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 [] [2021-11-03 22:38:49,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:49,284 INFO L93 Difference]: Finished difference Result 702 states and 775 transitions. [2021-11-03 22:38:49,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:38:49,284 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 [2021-11-03 22:38:49,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:49,286 INFO L225 Difference]: With dead ends: 702 [2021-11-03 22:38:49,286 INFO L226 Difference]: Without dead ends: 546 [2021-11-03 22:38:49,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1045.96ms TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:38:49,286 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 550 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5864.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.38ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6155.54ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:49,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 0 Invalid, 1711 Unknown, 0 Unchecked, 12.38ms Time], IncrementalHoareTripleChecker [47 Valid, 1663 Invalid, 1 Unknown, 0 Unchecked, 6155.54ms Time] [2021-11-03 22:38:49,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-03 22:38:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 517. [2021-11-03 22:38:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 507 states have (on average 1.1203155818540433) internal successors, (568), 516 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 568 transitions. [2021-11-03 22:38:49,303 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 568 transitions. Word has length 85 [2021-11-03 22:38:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:49,303 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 568 transitions. [2021-11-03 22:38:49,304 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) [2021-11-03 22:38:49,304 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 568 transitions. [2021-11-03 22:38:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:38:49,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:49,304 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] [2021-11-03 22:38:49,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 22:38:49,305 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:38:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1192781619, now seen corresponding path program 1 times [2021-11-03 22:38:49,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:49,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371131520] [2021-11-03 22:38:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:49,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:51,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:51,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371131520] [2021-11-03 22:38:51,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371131520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:51,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:51,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:38:51,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976104334] [2021-11-03 22:38:51,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:51,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:38:51,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:51,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:38:51,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:38:51,570 INFO L87 Difference]: Start difference. First operand 517 states and 568 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) [2021-11-03 22:38:53,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:38:58,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:58,718 INFO L93 Difference]: Finished difference Result 697 states and 767 transitions. [2021-11-03 22:38:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:38:58,718 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 [2021-11-03 22:38:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:58,720 INFO L225 Difference]: With dead ends: 697 [2021-11-03 22:38:58,720 INFO L226 Difference]: Without dead ends: 621 [2021-11-03 22:38:58,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 850.78ms TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:38:58,721 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 698 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6161.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.39ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6592.77ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:58,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 0 Invalid, 1804 Unknown, 0 Unchecked, 11.39ms Time], IncrementalHoareTripleChecker [26 Valid, 1777 Invalid, 1 Unknown, 0 Unchecked, 6592.77ms Time] [2021-11-03 22:38:58,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-11-03 22:38:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 517. [2021-11-03 22:38:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 507 states have (on average 1.116370808678501) internal successors, (566), 516 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:38:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 566 transitions. [2021-11-03 22:38:58,742 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 566 transitions. Word has length 85 [2021-11-03 22:38:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:58,742 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 566 transitions. [2021-11-03 22:38:58,742 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) [2021-11-03 22:38:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 566 transitions. [2021-11-03 22:38:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:38:58,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:58,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:38:58,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 22:38:58,743 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:38:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash -185385492, now seen corresponding path program 1 times [2021-11-03 22:38:58,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:58,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823520947] [2021-11-03 22:38:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:58,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:39:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:39:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:39:02,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:39:02,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823520947] [2021-11-03 22:39:02,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823520947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:39:02,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:39:02,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-03 22:39:02,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136335015] [2021-11-03 22:39:02,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:39:02,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 22:39:02,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:39:02,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 22:39:02,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-03 22:39:02,359 INFO L87 Difference]: Start difference. First operand 517 states and 566 transitions. Second operand has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 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) [2021-11-03 22:39:04,401 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 [] [2021-11-03 22:39:22,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:39:22,250 INFO L93 Difference]: Finished difference Result 909 states and 997 transitions. [2021-11-03 22:39:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-03 22:39:22,251 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 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 [2021-11-03 22:39:22,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:39:22,253 INFO L225 Difference]: With dead ends: 909 [2021-11-03 22:39:22,253 INFO L226 Difference]: Without dead ends: 907 [2021-11-03 22:39:22,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 7387.13ms TimeCoverageRelationStatistics Valid=772, Invalid=3920, Unknown=0, NotChecked=0, Total=4692 [2021-11-03 22:39:22,255 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1216 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 270 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12683.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.27ms SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13503.01ms IncrementalHoareTripleChecker+Time [2021-11-03 22:39:22,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 0 Invalid, 4756 Unknown, 0 Unchecked, 39.27ms Time], IncrementalHoareTripleChecker [270 Valid, 4485 Invalid, 1 Unknown, 0 Unchecked, 13503.01ms Time] [2021-11-03 22:39:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-11-03 22:39:22,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 595. [2021-11-03 22:39:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 585 states have (on average 1.1162393162393163) internal successors, (653), 594 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:39:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 653 transitions. [2021-11-03 22:39:22,276 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 653 transitions. Word has length 87 [2021-11-03 22:39:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:39:22,278 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 653 transitions. [2021-11-03 22:39:22,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 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) [2021-11-03 22:39:22,278 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 653 transitions. [2021-11-03 22:39:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:39:22,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:39:22,279 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] [2021-11-03 22:39:22,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 22:39:22,279 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:39:22,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:39:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash 167702890, now seen corresponding path program 1 times [2021-11-03 22:39:22,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:39:22,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123840670] [2021-11-03 22:39:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:39:22,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:39:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:39:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:39:22,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:39:22,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123840670] [2021-11-03 22:39:22,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123840670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:39:22,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:39:22,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:39:22,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935296050] [2021-11-03 22:39:22,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:39:22,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:39:22,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:39:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:39:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:39:22,942 INFO L87 Difference]: Start difference. First operand 595 states and 653 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:39:24,993 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 [] [2021-11-03 22:39:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:39:29,080 INFO L93 Difference]: Finished difference Result 759 states and 834 transitions. [2021-11-03 22:39:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:39:29,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-03 22:39:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:39:29,082 INFO L225 Difference]: With dead ends: 759 [2021-11-03 22:39:29,082 INFO L226 Difference]: Without dead ends: 564 [2021-11-03 22:39:29,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 724.19ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:39:29,083 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 372 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5231.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.13ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5640.45ms IncrementalHoareTripleChecker+Time [2021-11-03 22:39:29,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 0 Invalid, 1342 Unknown, 0 Unchecked, 10.13ms Time], IncrementalHoareTripleChecker [39 Valid, 1302 Invalid, 1 Unknown, 0 Unchecked, 5640.45ms Time] [2021-11-03 22:39:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-03 22:39:29,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 550. [2021-11-03 22:39:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 540 states have (on average 1.114814814814815) internal successors, (602), 549 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) [2021-11-03 22:39:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 602 transitions. [2021-11-03 22:39:29,124 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 602 transitions. Word has length 87 [2021-11-03 22:39:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:39:29,124 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 602 transitions. [2021-11-03 22:39:29,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:39:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 602 transitions. [2021-11-03 22:39:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:39:29,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:39:29,126 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] [2021-11-03 22:39:29,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 22:39:29,126 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:39:29,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:39:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash -535575669, now seen corresponding path program 1 times [2021-11-03 22:39:29,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:39:29,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187329628] [2021-11-03 22:39:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:39:29,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:39:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:39:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:39:29,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:39:29,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187329628] [2021-11-03 22:39:29,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187329628] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 22:39:29,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370483463] [2021-11-03 22:39:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:39:29,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 22:39:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:39:29,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 22:39:29,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 22:39:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:39:30,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 3063 conjuncts, 156 conjunts are in the unsatisfiable core [2021-11-03 22:39:30,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:39:30,893 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 [2021-11-03 22:39:32,258 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-03 22:39:32,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-11-03 22:39:32,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 22:39:32,497 INFO L354 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2021-11-03 22:39:32,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 50 [2021-11-03 22:39:32,955 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-11-03 22:39:32,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2021-11-03 22:39:32,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 22:39:33,260 INFO L354 Elim1Store]: treesize reduction 128, result has 37.6 percent of original size [2021-11-03 22:39:33,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 94 treesize of output 151 [2021-11-03 22:40:06,059 INFO L354 Elim1Store]: treesize reduction 88, result has 45.0 percent of original size [2021-11-03 22:40:06,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 189 treesize of output 225 [2021-11-03 22:40:06,070 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 220 treesize of output 208 [2021-11-03 22:42:37,795 WARN L210 SmtUtils]: Spent 32.64s on a formula simplification. DAG size of input: 144 DAG size of output: 115 [2021-11-03 22:42:50,647 WARN L210 SmtUtils]: Spent 9.25s on a formula simplification that was a NOOP. DAG size: 124 [2021-11-03 22:43:13,173 WARN L210 SmtUtils]: Spent 19.22s on a formula simplification that was a NOOP. DAG size: 104 [2021-11-03 22:43:43,510 WARN L210 SmtUtils]: Spent 26.25s on a formula simplification that was a NOOP. DAG size: 103 [2021-11-03 22:43:43,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 22:43:43,610 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 375 treesize of output 319 [2021-11-03 22:44:26,875 WARN L210 SmtUtils]: Spent 40.29s on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-11-03 22:44:48,854 WARN L210 SmtUtils]: Spent 18.10s on a formula simplification that was a NOOP. DAG size: 56 [2021-11-03 22:45:03,491 WARN L210 SmtUtils]: Spent 10.09s on a formula simplification that was a NOOP. DAG size: 53 [2021-11-03 22:45:05,971 INFO L354 Elim1Store]: treesize reduction 91, result has 37.7 percent of original size [2021-11-03 22:45:05,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 95 treesize of output 120 [2021-11-03 22:46:04,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 22:46:04,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 22:46:04,403 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 22:46:04,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 135 treesize of output 153 [2021-11-03 22:46:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 22:46:04,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 22:46:04,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370483463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:04,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 22:46:04,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [6] total 33 [2021-11-03 22:46:04,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343816498] [2021-11-03 22:46:04,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:04,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-03 22:46:04,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-03 22:46:04,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=946, Unknown=15, NotChecked=0, Total=1056 [2021-11-03 22:46:04,896 INFO L87 Difference]: Start difference. First operand 550 states and 602 transitions. Second operand has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 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) [2021-11-03 22:46:07,485 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 [] Killed by 15