./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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_from_whole_buffer_harness-1.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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:29:16,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:29:16,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:29:16,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:29:16,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:29:16,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:29:16,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:29:16,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:29:16,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:29:16,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:29:16,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:29:16,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:29:16,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:29:16,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:29:16,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:29:16,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:29:16,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:29:16,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:29:16,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:29:16,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:29:16,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:29:16,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:29:16,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:29:16,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:29:16,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:29:16,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:29:16,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:29:16,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:29:16,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:29:16,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:29:16,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:29:16,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:29:16,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:29:16,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:29:16,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:29:16,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:29:16,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:29:16,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:29:16,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:29:16,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:29:16,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:29:16,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:29:16,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:29:16,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:29:16,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:29:16,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:29:16,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:29:16,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:29:16,842 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:29:16,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:29:16,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:29:16,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:29:16,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:29:16,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:29:16,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:29:16,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:29:16,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:29:16,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:29:16,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:29:16,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:29:16,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:29:16,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:29:16,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:29:16,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:29:16,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:29:16,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:29:16,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:29:16,845 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:29:16,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:29:16,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:29:16,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:29:16,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-06 10:29:17,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:29:17,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:29:17,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:29:17,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:29:17,067 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:29:17,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-06 10:29:17,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ce19c0a/ff661fdf555e4bdf966b74755f7afe1a/FLAGd4f128a6f [2021-11-06 10:29:17,691 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:29:17,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-06 10:29:17,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ce19c0a/ff661fdf555e4bdf966b74755f7afe1a/FLAGd4f128a6f [2021-11-06 10:29:17,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ce19c0a/ff661fdf555e4bdf966b74755f7afe1a [2021-11-06 10:29:17,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:29:17,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:29:17,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:29:17,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:29:17,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:29:17,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:17" (1/1) ... [2021-11-06 10:29:17,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eaba22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:17, skipping insertion in model container [2021-11-06 10:29:17,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:17" (1/1) ... [2021-11-06 10:29:17,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:29:18,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:29:18,268 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_from_whole_buffer_harness-1.i[4510,4523] [2021-11-06 10:29:18,274 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_from_whole_buffer_harness-1.i[4570,4583] [2021-11-06 10:29:18,296 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:29:18,307 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:29:19,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,045 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,068 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,069 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,070 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,071 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,274 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:29:19,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:29:19,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:29:19,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:29:19,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:29:19,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:29:19,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:29:19,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:29:19,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:29:19,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:29:19,371 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:29:19,454 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,455 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:29:19,525 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:29:19,543 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_from_whole_buffer_harness-1.i[4510,4523] [2021-11-06 10:29:19,545 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_from_whole_buffer_harness-1.i[4570,4583] [2021-11-06 10:29:19,547 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:29:19,548 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:29:19,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,634 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:29:19,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:29:19,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:29:19,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:29:19,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:29:19,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:29:19,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:29:19,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:29:19,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:29:19,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:29:19,682 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:29:19,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:19,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:29:19,884 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:29:19,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19 WrapperNode [2021-11-06 10:29:19,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:29:19,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:29:19,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:29:19,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:29:19,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:19,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:20,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:29:20,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:29:20,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:29:20,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:29:20,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:20,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:20,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:20,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:20,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:20,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:20,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:20,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:29:20,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:29:20,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:29:20,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:29:20,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (1/1) ... [2021-11-06 10:29:20,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:29:20,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:29:20,179 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) [2021-11-06 10:29:20,198 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 [2021-11-06 10:29:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:29:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:29:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:29:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:29:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:29:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:29:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:29:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:29:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:29:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:29:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:29:28,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:29:28,764 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-06 10:29:28,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:28 BoogieIcfgContainer [2021-11-06 10:29:28,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:29:28,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:29:28,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:29:28,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:29:28,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:29:17" (1/3) ... [2021-11-06 10:29:28,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f284357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:28, skipping insertion in model container [2021-11-06 10:29:28,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:19" (2/3) ... [2021-11-06 10:29:28,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f284357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:28, skipping insertion in model container [2021-11-06 10:29:28,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:28" (3/3) ... [2021-11-06 10:29:28,772 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-06 10:29:28,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:29:28,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-06 10:29:28,808 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:29:28,812 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 [2021-11-06 10:29:28,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-06 10:29:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 10:29:28,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:28,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:28,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:28,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash 28296255, now seen corresponding path program 1 times [2021-11-06 10:29:28,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:28,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335794060] [2021-11-06 10:29:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:28,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:29,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:29,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335794060] [2021-11-06 10:29:29,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335794060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:29,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:29,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:29:29,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599907226] [2021-11-06 10:29:29,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:29:29,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:29,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:29:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:29:29,423 INFO L87 Difference]: Start difference. First operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:29,463 INFO L93 Difference]: Finished difference Result 586 states and 815 transitions. [2021-11-06 10:29:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:29:29,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-06 10:29:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:29,479 INFO L225 Difference]: With dead ends: 586 [2021-11-06 10:29:29,479 INFO L226 Difference]: Without dead ends: 290 [2021-11-06 10:29:29,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:29:29,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-06 10:29:29,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-06 10:29:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3505535055350553) internal successors, (366), 289 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 366 transitions. [2021-11-06 10:29:29,537 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 366 transitions. Word has length 64 [2021-11-06 10:29:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:29,537 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 366 transitions. [2021-11-06 10:29:29,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 366 transitions. [2021-11-06 10:29:29,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 10:29:29,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:29,541 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:29,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:29:29,542 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1015264321, now seen corresponding path program 1 times [2021-11-06 10:29:29,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:29,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204062067] [2021-11-06 10:29:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:29,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:29,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:29,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204062067] [2021-11-06 10:29:29,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204062067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:29,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:29,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:29,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113184244] [2021-11-06 10:29:29,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:29,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:29,874 INFO L87 Difference]: Start difference. First operand 290 states and 366 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:30,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:30,165 INFO L93 Difference]: Finished difference Result 550 states and 694 transitions. [2021-11-06 10:29:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:29:30,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-06 10:29:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:30,167 INFO L225 Difference]: With dead ends: 550 [2021-11-06 10:29:30,167 INFO L226 Difference]: Without dead ends: 290 [2021-11-06 10:29:30,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:30,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-06 10:29:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-06 10:29:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3394833948339484) internal successors, (363), 289 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 363 transitions. [2021-11-06 10:29:30,174 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 363 transitions. Word has length 64 [2021-11-06 10:29:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:30,174 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 363 transitions. [2021-11-06 10:29:30,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 363 transitions. [2021-11-06 10:29:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 10:29:30,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:30,182 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:30,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:29:30,183 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:30,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:30,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2079484297, now seen corresponding path program 1 times [2021-11-06 10:29:30,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:30,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034940021] [2021-11-06 10:29:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:30,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:30,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:30,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034940021] [2021-11-06 10:29:30,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034940021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:30,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:30,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:30,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113815631] [2021-11-06 10:29:30,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:30,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:30,460 INFO L87 Difference]: Start difference. First operand 290 states and 363 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:31,075 INFO L93 Difference]: Finished difference Result 757 states and 981 transitions. [2021-11-06 10:29:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:29:31,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 10:29:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:31,077 INFO L225 Difference]: With dead ends: 757 [2021-11-06 10:29:31,077 INFO L226 Difference]: Without dead ends: 488 [2021-11-06 10:29:31,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:29:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-06 10:29:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 308. [2021-11-06 10:29:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.3183391003460208) internal successors, (381), 307 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) [2021-11-06 10:29:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 381 transitions. [2021-11-06 10:29:31,084 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 381 transitions. Word has length 76 [2021-11-06 10:29:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:31,084 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 381 transitions. [2021-11-06 10:29:31,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 381 transitions. [2021-11-06 10:29:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 10:29:31,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:31,085 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:31,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:29:31,085 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -818567047, now seen corresponding path program 1 times [2021-11-06 10:29:31,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:31,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270113259] [2021-11-06 10:29:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:31,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:31,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:31,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270113259] [2021-11-06 10:29:31,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270113259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:31,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:31,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:31,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688788049] [2021-11-06 10:29:31,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:31,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:31,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:31,307 INFO L87 Difference]: Start difference. First operand 308 states and 381 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:31,918 INFO L93 Difference]: Finished difference Result 675 states and 850 transitions. [2021-11-06 10:29:31,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:29:31,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 10:29:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:31,920 INFO L225 Difference]: With dead ends: 675 [2021-11-06 10:29:31,920 INFO L226 Difference]: Without dead ends: 398 [2021-11-06 10:29:31,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:29:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-06 10:29:31,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 326. [2021-11-06 10:29:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.299674267100977) internal successors, (399), 325 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 399 transitions. [2021-11-06 10:29:31,926 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 399 transitions. Word has length 76 [2021-11-06 10:29:31,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:31,926 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 399 transitions. [2021-11-06 10:29:31,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:31,926 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 399 transitions. [2021-11-06 10:29:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 10:29:31,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:31,927 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:31,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:29:31,931 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:31,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1654783221, now seen corresponding path program 1 times [2021-11-06 10:29:31,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:31,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826712441] [2021-11-06 10:29:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:31,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:32,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:32,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826712441] [2021-11-06 10:29:32,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826712441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:32,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:32,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:32,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160629642] [2021-11-06 10:29:32,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:32,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:32,215 INFO L87 Difference]: Start difference. First operand 326 states and 399 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:32,474 INFO L93 Difference]: Finished difference Result 586 states and 717 transitions. [2021-11-06 10:29:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:29:32,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 10:29:32,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:32,476 INFO L225 Difference]: With dead ends: 586 [2021-11-06 10:29:32,476 INFO L226 Difference]: Without dead ends: 326 [2021-11-06 10:29:32,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:29:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-06 10:29:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-06 10:29:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.293159609120521) internal successors, (397), 325 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2021-11-06 10:29:32,481 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 76 [2021-11-06 10:29:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:32,481 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2021-11-06 10:29:32,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2021-11-06 10:29:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:29:32,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:32,482 INFO L513 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] [2021-11-06 10:29:32,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:29:32,482 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:32,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:32,482 INFO L85 PathProgramCache]: Analyzing trace with hash 865605514, now seen corresponding path program 1 times [2021-11-06 10:29:32,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:32,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793933276] [2021-11-06 10:29:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:32,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:32,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:32,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793933276] [2021-11-06 10:29:32,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793933276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:32,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:32,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:29:32,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805609045] [2021-11-06 10:29:32,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:29:32,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:32,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:29:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:29:32,831 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:33,186 INFO L93 Difference]: Finished difference Result 513 states and 619 transitions. [2021-11-06 10:29:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:29:33,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:29:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:33,188 INFO L225 Difference]: With dead ends: 513 [2021-11-06 10:29:33,188 INFO L226 Difference]: Without dead ends: 326 [2021-11-06 10:29:33,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:29:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-06 10:29:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-06 10:29:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.289902280130293) internal successors, (396), 325 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2021-11-06 10:29:33,193 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 82 [2021-11-06 10:29:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:33,194 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2021-11-06 10:29:33,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2021-11-06 10:29:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 10:29:33,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:33,195 INFO L513 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] [2021-11-06 10:29:33,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:29:33,195 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:33,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1668683435, now seen corresponding path program 1 times [2021-11-06 10:29:33,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:33,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598407925] [2021-11-06 10:29:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:33,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:33,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:33,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598407925] [2021-11-06 10:29:33,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598407925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:33,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:33,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:29:33,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121347555] [2021-11-06 10:29:33,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:29:33,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:33,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:29:33,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:29:33,612 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2021-11-06 10:29:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:34,127 INFO L93 Difference]: Finished difference Result 460 states and 548 transitions. [2021-11-06 10:29:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:29:34,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-06 10:29:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:34,129 INFO L225 Difference]: With dead ends: 460 [2021-11-06 10:29:34,129 INFO L226 Difference]: Without dead ends: 326 [2021-11-06 10:29:34,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:29:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-06 10:29:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-06 10:29:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.283387622149837) internal successors, (394), 325 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 394 transitions. [2021-11-06 10:29:34,135 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 394 transitions. Word has length 88 [2021-11-06 10:29:34,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:34,136 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 394 transitions. [2021-11-06 10:29:34,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2021-11-06 10:29:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 394 transitions. [2021-11-06 10:29:34,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 10:29:34,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:34,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:34,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:29:34,137 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:34,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195350, now seen corresponding path program 1 times [2021-11-06 10:29:34,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:34,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711240849] [2021-11-06 10:29:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:34,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:34,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:34,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711240849] [2021-11-06 10:29:34,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711240849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:34,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:34,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:34,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713642794] [2021-11-06 10:29:34,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:34,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:34,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:34,364 INFO L87 Difference]: Start difference. First operand 326 states and 394 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:34,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:34,514 INFO L93 Difference]: Finished difference Result 534 states and 641 transitions. [2021-11-06 10:29:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:29:34,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 10:29:34,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:34,516 INFO L225 Difference]: With dead ends: 534 [2021-11-06 10:29:34,516 INFO L226 Difference]: Without dead ends: 326 [2021-11-06 10:29:34,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:34,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-06 10:29:34,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-06 10:29:34,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.280130293159609) internal successors, (393), 325 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 393 transitions. [2021-11-06 10:29:34,522 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 393 transitions. Word has length 94 [2021-11-06 10:29:34,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:34,523 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 393 transitions. [2021-11-06 10:29:34,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:34,523 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 393 transitions. [2021-11-06 10:29:34,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 10:29:34,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:34,524 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:34,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 10:29:34,524 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:34,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1700306559, now seen corresponding path program 1 times [2021-11-06 10:29:34,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:34,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562627117] [2021-11-06 10:29:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:34,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:35,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:35,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562627117] [2021-11-06 10:29:35,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562627117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:35,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:35,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:29:35,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249312577] [2021-11-06 10:29:35,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:29:35,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:29:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:29:35,265 INFO L87 Difference]: Start difference. First operand 326 states and 393 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:36,351 INFO L93 Difference]: Finished difference Result 536 states and 627 transitions. [2021-11-06 10:29:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:29:36,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-06 10:29:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:36,353 INFO L225 Difference]: With dead ends: 536 [2021-11-06 10:29:36,353 INFO L226 Difference]: Without dead ends: 528 [2021-11-06 10:29:36,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:29:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-06 10:29:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 342. [2021-11-06 10:29:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 323 states have (on average 1.2662538699690402) internal successors, (409), 341 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 409 transitions. [2021-11-06 10:29:36,361 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 409 transitions. Word has length 100 [2021-11-06 10:29:36,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:36,361 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 409 transitions. [2021-11-06 10:29:36,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:36,362 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 409 transitions. [2021-11-06 10:29:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 10:29:36,362 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:36,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:36,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 10:29:36,363 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:36,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -989785033, now seen corresponding path program 1 times [2021-11-06 10:29:36,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:36,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160080577] [2021-11-06 10:29:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:36,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:38,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:38,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160080577] [2021-11-06 10:29:38,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160080577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:38,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:38,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:29:38,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240534657] [2021-11-06 10:29:38,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:29:38,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:38,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:29:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:29:38,028 INFO L87 Difference]: Start difference. First operand 342 states and 409 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:59,151 INFO L93 Difference]: Finished difference Result 1166 states and 1416 transitions. [2021-11-06 10:29:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-06 10:29:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-06 10:29:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:59,155 INFO L225 Difference]: With dead ends: 1166 [2021-11-06 10:29:59,155 INFO L226 Difference]: Without dead ends: 970 [2021-11-06 10:29:59,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 10:29:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-11-06 10:29:59,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 374. [2021-11-06 10:29:59,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.267605633802817) internal successors, (450), 373 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 450 transitions. [2021-11-06 10:29:59,165 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 450 transitions. Word has length 104 [2021-11-06 10:29:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:59,165 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 450 transitions. [2021-11-06 10:29:59,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 450 transitions. [2021-11-06 10:29:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 10:29:59,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:59,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:59,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 10:29:59,167 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:29:59,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:59,167 INFO L85 PathProgramCache]: Analyzing trace with hash 90747777, now seen corresponding path program 1 times [2021-11-06 10:29:59,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:59,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655208381] [2021-11-06 10:29:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:59,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:00,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:00,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655208381] [2021-11-06 10:30:00,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655208381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:00,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:00,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:30:00,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86885233] [2021-11-06 10:30:00,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:30:00,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:30:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:30:00,129 INFO L87 Difference]: Start difference. First operand 374 states and 450 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:06,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:06,662 INFO L93 Difference]: Finished difference Result 911 states and 1093 transitions. [2021-11-06 10:30:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:30:06,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 10:30:06,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:06,665 INFO L225 Difference]: With dead ends: 911 [2021-11-06 10:30:06,665 INFO L226 Difference]: Without dead ends: 632 [2021-11-06 10:30:06,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:30:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-06 10:30:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 436. [2021-11-06 10:30:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 417 states have (on average 1.2685851318944845) internal successors, (529), 435 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 529 transitions. [2021-11-06 10:30:06,676 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 529 transitions. Word has length 108 [2021-11-06 10:30:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:06,677 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 529 transitions. [2021-11-06 10:30:06,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 529 transitions. [2021-11-06 10:30:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 10:30:06,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:06,678 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:06,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 10:30:06,678 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:30:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash -418725313, now seen corresponding path program 1 times [2021-11-06 10:30:06,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:06,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558528580] [2021-11-06 10:30:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:06,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:08,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:08,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558528580] [2021-11-06 10:30:08,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558528580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:08,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:08,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:30:08,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771203882] [2021-11-06 10:30:08,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:30:08,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:08,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:30:08,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:30:08,211 INFO L87 Difference]: Start difference. First operand 436 states and 529 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:32,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:32,596 INFO L93 Difference]: Finished difference Result 1256 states and 1522 transitions. [2021-11-06 10:30:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-06 10:30:32,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 10:30:32,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:32,600 INFO L225 Difference]: With dead ends: 1256 [2021-11-06 10:30:32,600 INFO L226 Difference]: Without dead ends: 1060 [2021-11-06 10:30:32,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=244, Invalid=946, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 10:30:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-11-06 10:30:32,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 440. [2021-11-06 10:30:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 421 states have (on average 1.2660332541567696) internal successors, (533), 439 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 533 transitions. [2021-11-06 10:30:32,612 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 533 transitions. Word has length 108 [2021-11-06 10:30:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:32,613 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 533 transitions. [2021-11-06 10:30:32,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:32,613 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 533 transitions. [2021-11-06 10:30:32,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 10:30:32,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:32,614 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:32,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 10:30:32,614 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:30:32,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:32,615 INFO L85 PathProgramCache]: Analyzing trace with hash -413912913, now seen corresponding path program 1 times [2021-11-06 10:30:32,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:32,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903352151] [2021-11-06 10:30:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:32,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:34,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:34,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903352151] [2021-11-06 10:30:34,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903352151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:34,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:34,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:30:34,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698123399] [2021-11-06 10:30:34,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:30:34,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:30:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:30:34,238 INFO L87 Difference]: Start difference. First operand 440 states and 533 transitions. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:58,245 INFO L93 Difference]: Finished difference Result 1804 states and 2149 transitions. [2021-11-06 10:30:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-06 10:30:58,246 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 10:30:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:58,250 INFO L225 Difference]: With dead ends: 1804 [2021-11-06 10:30:58,250 INFO L226 Difference]: Without dead ends: 1608 [2021-11-06 10:30:58,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=611, Invalid=1839, Unknown=0, NotChecked=0, Total=2450 [2021-11-06 10:30:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-11-06 10:30:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 508. [2021-11-06 10:30:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.2678936605316973) internal successors, (620), 507 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 620 transitions. [2021-11-06 10:30:58,269 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 620 transitions. Word has length 108 [2021-11-06 10:30:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:58,269 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 620 transitions. [2021-11-06 10:30:58,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 620 transitions. [2021-11-06 10:30:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 10:30:58,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:58,271 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:58,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 10:30:58,271 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:30:58,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:58,272 INFO L85 PathProgramCache]: Analyzing trace with hash 48063649, now seen corresponding path program 1 times [2021-11-06 10:30:58,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:58,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381082799] [2021-11-06 10:30:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:58,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:59,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:59,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381082799] [2021-11-06 10:30:59,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381082799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:59,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:59,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:30:59,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912836057] [2021-11-06 10:30:59,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:30:59,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:59,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:30:59,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:30:59,167 INFO L87 Difference]: Start difference. First operand 508 states and 620 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:00,457 INFO L93 Difference]: Finished difference Result 1152 states and 1375 transitions. [2021-11-06 10:31:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:31:00,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-06 10:31:00,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:00,459 INFO L225 Difference]: With dead ends: 1152 [2021-11-06 10:31:00,459 INFO L226 Difference]: Without dead ends: 616 [2021-11-06 10:31:00,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:31:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-11-06 10:31:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 457. [2021-11-06 10:31:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 438 states have (on average 1.2488584474885844) internal successors, (547), 456 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 547 transitions. [2021-11-06 10:31:00,478 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 547 transitions. Word has length 111 [2021-11-06 10:31:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:00,478 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 547 transitions. [2021-11-06 10:31:00,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 547 transitions. [2021-11-06 10:31:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 10:31:00,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:00,479 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:31:00,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 10:31:00,480 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:31:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:00,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1701466108, now seen corresponding path program 1 times [2021-11-06 10:31:00,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:00,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414538638] [2021-11-06 10:31:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:00,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:31:00,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:00,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414538638] [2021-11-06 10:31:00,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414538638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:00,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:00,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:31:00,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349865737] [2021-11-06 10:31:00,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:31:00,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:31:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:31:00,680 INFO L87 Difference]: Start difference. First operand 457 states and 547 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:01,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:01,208 INFO L93 Difference]: Finished difference Result 938 states and 1117 transitions. [2021-11-06 10:31:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:31:01,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-06 10:31:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:01,210 INFO L225 Difference]: With dead ends: 938 [2021-11-06 10:31:01,210 INFO L226 Difference]: Without dead ends: 489 [2021-11-06 10:31:01,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:31:01,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-06 10:31:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 465. [2021-11-06 10:31:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 446 states have (on average 1.2197309417040358) internal successors, (544), 464 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 544 transitions. [2021-11-06 10:31:01,221 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 544 transitions. Word has length 113 [2021-11-06 10:31:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:01,222 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 544 transitions. [2021-11-06 10:31:01,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:01,222 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 544 transitions. [2021-11-06 10:31:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 10:31:01,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:01,223 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:31:01,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 10:31:01,223 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:31:01,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1277819386, now seen corresponding path program 1 times [2021-11-06 10:31:01,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:01,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406966342] [2021-11-06 10:31:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:01,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:31:02,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:02,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406966342] [2021-11-06 10:31:02,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406966342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:02,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:02,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:31:02,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386849247] [2021-11-06 10:31:02,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:31:02,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:02,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:31:02,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:31:02,254 INFO L87 Difference]: Start difference. First operand 465 states and 544 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:05,988 INFO L93 Difference]: Finished difference Result 1218 states and 1414 transitions. [2021-11-06 10:31:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:31:05,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-06 10:31:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:05,991 INFO L225 Difference]: With dead ends: 1218 [2021-11-06 10:31:05,991 INFO L226 Difference]: Without dead ends: 876 [2021-11-06 10:31:05,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:31:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-06 10:31:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 479. [2021-11-06 10:31:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 460 states have (on average 1.2173913043478262) internal successors, (560), 478 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) [2021-11-06 10:31:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 560 transitions. [2021-11-06 10:31:06,007 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 560 transitions. Word has length 113 [2021-11-06 10:31:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:06,008 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 560 transitions. [2021-11-06 10:31:06,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 560 transitions. [2021-11-06 10:31:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 10:31:06,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:06,009 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:31:06,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 10:31:06,009 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:31:06,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2081003986, now seen corresponding path program 1 times [2021-11-06 10:31:06,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:06,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801943272] [2021-11-06 10:31:06,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:06,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:31:07,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:07,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801943272] [2021-11-06 10:31:07,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801943272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:07,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:07,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 10:31:07,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355187547] [2021-11-06 10:31:07,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:31:07,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:31:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:31:07,853 INFO L87 Difference]: Start difference. First operand 479 states and 560 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:29,800 INFO L93 Difference]: Finished difference Result 1219 states and 1417 transitions. [2021-11-06 10:31:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 10:31:29,800 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-06 10:31:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:29,803 INFO L225 Difference]: With dead ends: 1219 [2021-11-06 10:31:29,803 INFO L226 Difference]: Without dead ends: 944 [2021-11-06 10:31:29,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 10:31:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-11-06 10:31:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 665. [2021-11-06 10:31:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 646 states have (on average 1.2291021671826625) internal successors, (794), 664 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 794 transitions. [2021-11-06 10:31:29,829 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 794 transitions. Word has length 113 [2021-11-06 10:31:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:29,829 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 794 transitions. [2021-11-06 10:31:29,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 794 transitions. [2021-11-06 10:31:29,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 10:31:29,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:29,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:31:29,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 10:31:29,831 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:31:29,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash -152731284, now seen corresponding path program 1 times [2021-11-06 10:31:29,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:29,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500864594] [2021-11-06 10:31:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:29,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:31:32,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:32,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500864594] [2021-11-06 10:31:32,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500864594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:32,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:32,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-06 10:31:32,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169393039] [2021-11-06 10:31:32,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-06 10:31:32,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-06 10:31:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:31:32,446 INFO L87 Difference]: Start difference. First operand 665 states and 794 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:06,491 INFO L93 Difference]: Finished difference Result 2057 states and 2400 transitions. [2021-11-06 10:32:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-06 10:32:06,491 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-06 10:32:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:06,496 INFO L225 Difference]: With dead ends: 2057 [2021-11-06 10:32:06,496 INFO L226 Difference]: Without dead ends: 1788 [2021-11-06 10:32:06,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=680, Invalid=2860, Unknown=0, NotChecked=0, Total=3540 [2021-11-06 10:32:06,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-11-06 10:32:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 605. [2021-11-06 10:32:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 586 states have (on average 1.2320819112627985) internal successors, (722), 604 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 722 transitions. [2021-11-06 10:32:06,519 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 722 transitions. Word has length 113 [2021-11-06 10:32:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:06,519 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 722 transitions. [2021-11-06 10:32:06,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 722 transitions. [2021-11-06 10:32:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 10:32:06,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:06,521 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:32:06,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 10:32:06,521 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:32:06,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1369284272, now seen corresponding path program 1 times [2021-11-06 10:32:06,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:06,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836217008] [2021-11-06 10:32:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:06,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:32:07,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:07,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836217008] [2021-11-06 10:32:07,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836217008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:07,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:07,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:32:07,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645250715] [2021-11-06 10:32:07,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:32:07,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:32:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:32:07,684 INFO L87 Difference]: Start difference. First operand 605 states and 722 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:19,559 INFO L93 Difference]: Finished difference Result 1936 states and 2312 transitions. [2021-11-06 10:32:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-06 10:32:19,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-06 10:32:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:19,564 INFO L225 Difference]: With dead ends: 1936 [2021-11-06 10:32:19,565 INFO L226 Difference]: Without dead ends: 1770 [2021-11-06 10:32:19,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-11-06 10:32:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-11-06 10:32:19,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 682. [2021-11-06 10:32:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 663 states have (on average 1.2217194570135748) internal successors, (810), 681 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 810 transitions. [2021-11-06 10:32:19,612 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 810 transitions. Word has length 114 [2021-11-06 10:32:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:19,613 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 810 transitions. [2021-11-06 10:32:19,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 810 transitions. [2021-11-06 10:32:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 10:32:19,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:19,614 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:32:19,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 10:32:19,615 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:32:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1356810702, now seen corresponding path program 1 times [2021-11-06 10:32:19,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:19,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272371983] [2021-11-06 10:32:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:19,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 10:32:20,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:20,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272371983] [2021-11-06 10:32:20,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272371983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:20,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:20,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:32:20,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085065421] [2021-11-06 10:32:20,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:32:20,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:32:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:32:20,502 INFO L87 Difference]: Start difference. First operand 682 states and 810 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:23,861 INFO L93 Difference]: Finished difference Result 1583 states and 1864 transitions. [2021-11-06 10:32:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:32:23,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-06 10:32:23,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:23,864 INFO L225 Difference]: With dead ends: 1583 [2021-11-06 10:32:23,864 INFO L226 Difference]: Without dead ends: 892 [2021-11-06 10:32:23,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:32:23,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-06 10:32:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 652. [2021-11-06 10:32:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 633 states have (on average 1.187993680884676) internal successors, (752), 651 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 752 transitions. [2021-11-06 10:32:23,881 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 752 transitions. Word has length 116 [2021-11-06 10:32:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:23,881 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 752 transitions. [2021-11-06 10:32:23,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 752 transitions. [2021-11-06 10:32:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 10:32:23,882 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:23,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:32:23,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 10:32:23,883 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:32:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2036869072, now seen corresponding path program 1 times [2021-11-06 10:32:23,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:23,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400831058] [2021-11-06 10:32:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:23,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:32:25,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:25,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400831058] [2021-11-06 10:32:25,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400831058] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 10:32:25,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375690743] [2021-11-06 10:32:25,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:25,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:32:25,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:32:25,104 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) [2021-11-06 10:32:25,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 10:32:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:25,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 3280 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-06 10:32:25,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:32:26,394 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 [2021-11-06 10:32:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 10:32:27,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375690743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:27,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 10:32:27,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2021-11-06 10:32:27,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611614022] [2021-11-06 10:32:27,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:32:27,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:27,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:32:27,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:32:27,226 INFO L87 Difference]: Start difference. First operand 652 states and 752 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:31,107 INFO L93 Difference]: Finished difference Result 1311 states and 1508 transitions. [2021-11-06 10:32:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:32:31,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-06 10:32:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:31,109 INFO L225 Difference]: With dead ends: 1311 [2021-11-06 10:32:31,109 INFO L226 Difference]: Without dead ends: 688 [2021-11-06 10:32:31,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2021-11-06 10:32:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-06 10:32:31,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 648. [2021-11-06 10:32:31,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 629 states have (on average 1.1875993640699523) internal successors, (747), 647 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 747 transitions. [2021-11-06 10:32:31,128 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 747 transitions. Word has length 116 [2021-11-06 10:32:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:31,128 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 747 transitions. [2021-11-06 10:32:31,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:31,128 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 747 transitions. [2021-11-06 10:32:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:32:31,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:31,129 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:32:31,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 10:32:31,343 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,SelfDestructingSolverStorable20 [2021-11-06 10:32:31,344 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:32:31,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1331151359, now seen corresponding path program 1 times [2021-11-06 10:32:31,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:31,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631175747] [2021-11-06 10:32:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:31,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:32:32,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:32,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631175747] [2021-11-06 10:32:32,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631175747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 10:32:32,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264065995] [2021-11-06 10:32:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:32,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:32:32,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:32:32,772 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) [2021-11-06 10:32:32,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 10:32:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:33,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-06 10:32:33,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:32:34,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-06 10:32:34,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-06 10:32:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:32:35,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264065995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:35,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 10:32:35,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2021-11-06 10:32:35,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441169782] [2021-11-06 10:32:35,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:32:35,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:32:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:32:35,390 INFO L87 Difference]: Start difference. First operand 648 states and 747 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:40,103 INFO L93 Difference]: Finished difference Result 1106 states and 1288 transitions. [2021-11-06 10:32:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:32:40,104 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-06 10:32:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:40,106 INFO L225 Difference]: With dead ends: 1106 [2021-11-06 10:32:40,106 INFO L226 Difference]: Without dead ends: 886 [2021-11-06 10:32:40,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-11-06 10:32:40,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-11-06 10:32:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 616. [2021-11-06 10:32:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 597 states have (on average 1.187604690117253) internal successors, (709), 615 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 709 transitions. [2021-11-06 10:32:40,146 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 709 transitions. Word has length 122 [2021-11-06 10:32:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:40,146 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 709 transitions. [2021-11-06 10:32:40,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 709 transitions. [2021-11-06 10:32:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:32:40,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:40,147 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:32:40,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 10:32:40,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-06 10:32:40,349 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:32:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash 16376778, now seen corresponding path program 1 times [2021-11-06 10:32:40,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:40,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087783791] [2021-11-06 10:32:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:40,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:32:41,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:41,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087783791] [2021-11-06 10:32:41,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087783791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:41,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:41,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 10:32:41,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133632828] [2021-11-06 10:32:41,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:32:41,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:41,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:32:41,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:32:41,990 INFO L87 Difference]: Start difference. First operand 616 states and 709 transitions. Second operand has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:54,088 INFO L93 Difference]: Finished difference Result 2002 states and 2289 transitions. [2021-11-06 10:32:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-06 10:32:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-06 10:32:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:54,092 INFO L225 Difference]: With dead ends: 2002 [2021-11-06 10:32:54,092 INFO L226 Difference]: Without dead ends: 1705 [2021-11-06 10:32:54,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=584, Invalid=1672, Unknown=0, NotChecked=0, Total=2256 [2021-11-06 10:32:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-11-06 10:32:54,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 695. [2021-11-06 10:32:54,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 676 states have (on average 1.1760355029585798) internal successors, (795), 694 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 795 transitions. [2021-11-06 10:32:54,115 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 795 transitions. Word has length 122 [2021-11-06 10:32:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:54,115 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 795 transitions. [2021-11-06 10:32:54,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 795 transitions. [2021-11-06 10:32:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:32:54,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:54,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:32:54,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 10:32:54,117 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:32:54,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1939604812, now seen corresponding path program 1 times [2021-11-06 10:32:54,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:54,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145444928] [2021-11-06 10:32:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:54,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:32:57,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:57,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145444928] [2021-11-06 10:32:57,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145444928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:57,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:57,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-06 10:32:57,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602967967] [2021-11-06 10:32:57,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 10:32:57,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 10:32:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:32:57,391 INFO L87 Difference]: Start difference. First operand 695 states and 795 transitions. Second operand has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:33:27,366 INFO L93 Difference]: Finished difference Result 1437 states and 1652 transitions. [2021-11-06 10:33:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-06 10:33:27,366 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-06 10:33:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:33:27,369 INFO L225 Difference]: With dead ends: 1437 [2021-11-06 10:33:27,369 INFO L226 Difference]: Without dead ends: 1152 [2021-11-06 10:33:27,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-11-06 10:33:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-11-06 10:33:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 720. [2021-11-06 10:33:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 701 states have (on average 1.174037089871612) internal successors, (823), 719 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 823 transitions. [2021-11-06 10:33:27,392 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 823 transitions. Word has length 122 [2021-11-06 10:33:27,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:33:27,392 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 823 transitions. [2021-11-06 10:33:27,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:27,392 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 823 transitions. [2021-11-06 10:33:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:33:27,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:33:27,393 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:33:27,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 10:33:27,394 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:33:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:33:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1428388624, now seen corresponding path program 1 times [2021-11-06 10:33:27,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:33:27,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246940147] [2021-11-06 10:33:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:33:27,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:33:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:33:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:33:28,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:33:28,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246940147] [2021-11-06 10:33:28,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246940147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:33:28,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:33:28,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:33:28,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668431392] [2021-11-06 10:33:28,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:33:28,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:33:28,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:33:28,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:33:28,835 INFO L87 Difference]: Start difference. First operand 720 states and 823 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:33:42,252 INFO L93 Difference]: Finished difference Result 1648 states and 1907 transitions. [2021-11-06 10:33:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-06 10:33:42,253 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-06 10:33:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:33:42,256 INFO L225 Difference]: With dead ends: 1648 [2021-11-06 10:33:42,256 INFO L226 Difference]: Without dead ends: 1408 [2021-11-06 10:33:42,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 10:33:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2021-11-06 10:33:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 730. [2021-11-06 10:33:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 711 states have (on average 1.1744022503516174) internal successors, (835), 729 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 835 transitions. [2021-11-06 10:33:42,285 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 835 transitions. Word has length 122 [2021-11-06 10:33:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:33:42,285 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 835 transitions. [2021-11-06 10:33:42,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 835 transitions. [2021-11-06 10:33:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:33:42,287 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:33:42,287 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:33:42,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 10:33:42,287 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:33:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:33:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1686554062, now seen corresponding path program 1 times [2021-11-06 10:33:42,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:33:42,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880162086] [2021-11-06 10:33:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:33:42,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:33:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:33:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:33:45,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:33:45,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880162086] [2021-11-06 10:33:45,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880162086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:33:45,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:33:45,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-06 10:33:45,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374034793] [2021-11-06 10:33:45,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 10:33:45,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:33:45,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 10:33:45,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:33:45,673 INFO L87 Difference]: Start difference. First operand 730 states and 835 transitions. Second operand has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:20,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:20,108 INFO L93 Difference]: Finished difference Result 1957 states and 2245 transitions. [2021-11-06 10:34:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-06 10:34:20,109 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-06 10:34:20,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:20,112 INFO L225 Difference]: With dead ends: 1957 [2021-11-06 10:34:20,112 INFO L226 Difference]: Without dead ends: 1637 [2021-11-06 10:34:20,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=625, Invalid=2567, Unknown=0, NotChecked=0, Total=3192 [2021-11-06 10:34:20,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-11-06 10:34:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 793. [2021-11-06 10:34:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 774 states have (on average 1.1705426356589148) internal successors, (906), 792 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 906 transitions. [2021-11-06 10:34:20,142 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 906 transitions. Word has length 122 [2021-11-06 10:34:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:20,142 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 906 transitions. [2021-11-06 10:34:20,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 906 transitions. [2021-11-06 10:34:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:34:20,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:20,144 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:34:20,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 10:34:20,144 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:34:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash -889637883, now seen corresponding path program 1 times [2021-11-06 10:34:20,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:20,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737036879] [2021-11-06 10:34:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:20,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:34:21,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:21,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737036879] [2021-11-06 10:34:21,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737036879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:21,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:21,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:34:21,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874817579] [2021-11-06 10:34:21,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:34:21,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:34:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:34:21,998 INFO L87 Difference]: Start difference. First operand 793 states and 906 transitions. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:35,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:35,424 INFO L93 Difference]: Finished difference Result 1726 states and 1955 transitions. [2021-11-06 10:34:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:34:35,424 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-06 10:34:35,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:35,429 INFO L225 Difference]: With dead ends: 1726 [2021-11-06 10:34:35,429 INFO L226 Difference]: Without dead ends: 1394 [2021-11-06 10:34:35,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-11-06 10:34:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-06 10:34:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 798. [2021-11-06 10:34:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 779 states have (on average 1.1694480102695763) internal successors, (911), 797 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 911 transitions. [2021-11-06 10:34:35,453 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 911 transitions. Word has length 122 [2021-11-06 10:34:35,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:35,453 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 911 transitions. [2021-11-06 10:34:35,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 911 transitions. [2021-11-06 10:34:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:34:35,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:35,455 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:34:35,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 10:34:35,455 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:34:35,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1007342128, now seen corresponding path program 1 times [2021-11-06 10:34:35,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:35,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788591363] [2021-11-06 10:34:35,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:35,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:34:37,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:37,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788591363] [2021-11-06 10:34:37,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788591363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:37,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:37,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:34:37,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463348399] [2021-11-06 10:34:37,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:34:37,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:34:37,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:34:37,969 INFO L87 Difference]: Start difference. First operand 798 states and 911 transitions. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:55,436 INFO L93 Difference]: Finished difference Result 1427 states and 1623 transitions. [2021-11-06 10:34:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 10:34:55,437 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-06 10:34:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:55,439 INFO L225 Difference]: With dead ends: 1427 [2021-11-06 10:34:55,439 INFO L226 Difference]: Without dead ends: 850 [2021-11-06 10:34:55,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2021-11-06 10:34:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-11-06 10:34:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 730. [2021-11-06 10:34:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 711 states have (on average 1.1729957805907174) internal successors, (834), 729 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 834 transitions. [2021-11-06 10:34:55,461 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 834 transitions. Word has length 122 [2021-11-06 10:34:55,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:55,462 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 834 transitions. [2021-11-06 10:34:55,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:55,462 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 834 transitions. [2021-11-06 10:34:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:34:55,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:55,463 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:34:55,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 10:34:55,463 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:34:55,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:55,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1334389522, now seen corresponding path program 1 times [2021-11-06 10:34:55,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:55,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610812286] [2021-11-06 10:34:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:55,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:34:56,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:56,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610812286] [2021-11-06 10:34:56,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610812286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:56,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:56,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:34:56,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944557287] [2021-11-06 10:34:56,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:34:56,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:56,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:34:56,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:34:56,879 INFO L87 Difference]: Start difference. First operand 730 states and 834 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:04,271 INFO L93 Difference]: Finished difference Result 1776 states and 2046 transitions. [2021-11-06 10:35:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 10:35:04,272 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:35:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:04,275 INFO L225 Difference]: With dead ends: 1776 [2021-11-06 10:35:04,275 INFO L226 Difference]: Without dead ends: 1220 [2021-11-06 10:35:04,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-11-06 10:35:04,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-06 10:35:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 730. [2021-11-06 10:35:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 711 states have (on average 1.170182841068917) internal successors, (832), 729 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 832 transitions. [2021-11-06 10:35:04,298 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 832 transitions. Word has length 125 [2021-11-06 10:35:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:04,298 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 832 transitions. [2021-11-06 10:35:04,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:04,298 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 832 transitions. [2021-11-06 10:35:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:35:04,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:04,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:35:04,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 10:35:04,300 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:35:04,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:04,300 INFO L85 PathProgramCache]: Analyzing trace with hash -804839302, now seen corresponding path program 1 times [2021-11-06 10:35:04,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:04,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847284859] [2021-11-06 10:35:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:04,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:35:07,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:07,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847284859] [2021-11-06 10:35:07,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847284859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:07,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:07,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-06 10:35:07,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851289249] [2021-11-06 10:35:07,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-06 10:35:07,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:07,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-06 10:35:07,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:35:07,031 INFO L87 Difference]: Start difference. First operand 730 states and 832 transitions. Second operand has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:53,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:53,340 INFO L93 Difference]: Finished difference Result 1834 states and 2066 transitions. [2021-11-06 10:35:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-06 10:35:53,341 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:35:53,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:53,344 INFO L225 Difference]: With dead ends: 1834 [2021-11-06 10:35:53,345 INFO L226 Difference]: Without dead ends: 1502 [2021-11-06 10:35:53,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=922, Invalid=3368, Unknown=0, NotChecked=0, Total=4290 [2021-11-06 10:35:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-11-06 10:35:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 732. [2021-11-06 10:35:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 713 states have (on average 1.1697054698457223) internal successors, (834), 731 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 834 transitions. [2021-11-06 10:35:53,376 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 834 transitions. Word has length 125 [2021-11-06 10:35:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:53,377 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 834 transitions. [2021-11-06 10:35:53,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 834 transitions. [2021-11-06 10:35:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:35:53,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:53,378 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:35:53,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 10:35:53,379 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:35:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1579085436, now seen corresponding path program 1 times [2021-11-06 10:35:53,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:53,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907445978] [2021-11-06 10:35:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:53,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:35:54,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:54,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907445978] [2021-11-06 10:35:54,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907445978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:54,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:54,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:35:54,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323675537] [2021-11-06 10:35:54,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:35:54,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:35:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:35:54,935 INFO L87 Difference]: Start difference. First operand 732 states and 834 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:08,512 INFO L93 Difference]: Finished difference Result 1607 states and 1856 transitions. [2021-11-06 10:36:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:36:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:36:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:08,516 INFO L225 Difference]: With dead ends: 1607 [2021-11-06 10:36:08,516 INFO L226 Difference]: Without dead ends: 1390 [2021-11-06 10:36:08,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-11-06 10:36:08,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-06 10:36:08,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 741. [2021-11-06 10:36:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 722 states have (on average 1.1689750692520775) internal successors, (844), 740 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 844 transitions. [2021-11-06 10:36:08,542 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 844 transitions. Word has length 125 [2021-11-06 10:36:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:08,542 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 844 transitions. [2021-11-06 10:36:08,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 844 transitions. [2021-11-06 10:36:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:36:08,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:08,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:36:08,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 10:36:08,544 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:36:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash 549726138, now seen corresponding path program 1 times [2021-11-06 10:36:08,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:08,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259571840] [2021-11-06 10:36:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:08,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:36:12,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:12,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259571840] [2021-11-06 10:36:12,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259571840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:12,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:12,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:36:12,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547676683] [2021-11-06 10:36:12,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:36:12,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:12,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:36:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:36:12,620 INFO L87 Difference]: Start difference. First operand 741 states and 844 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:22,135 INFO L93 Difference]: Finished difference Result 1230 states and 1410 transitions. [2021-11-06 10:36:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:36:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:36:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:22,138 INFO L225 Difference]: With dead ends: 1230 [2021-11-06 10:36:22,138 INFO L226 Difference]: Without dead ends: 1068 [2021-11-06 10:36:22,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2021-11-06 10:36:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-06 10:36:22,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 782. [2021-11-06 10:36:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 763 states have (on average 1.1703800786369594) internal successors, (893), 781 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 893 transitions. [2021-11-06 10:36:22,167 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 893 transitions. Word has length 125 [2021-11-06 10:36:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:22,167 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 893 transitions. [2021-11-06 10:36:22,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 893 transitions. [2021-11-06 10:36:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:36:22,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:22,169 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:36:22,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 10:36:22,169 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:36:22,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash 807891576, now seen corresponding path program 1 times [2021-11-06 10:36:22,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:22,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038490498] [2021-11-06 10:36:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:22,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:36:23,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:23,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038490498] [2021-11-06 10:36:23,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038490498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:23,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:23,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:36:23,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551214344] [2021-11-06 10:36:23,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:36:23,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:36:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:36:23,332 INFO L87 Difference]: Start difference. First operand 782 states and 893 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:35,181 INFO L93 Difference]: Finished difference Result 1262 states and 1438 transitions. [2021-11-06 10:36:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:36:35,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:36:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:35,184 INFO L225 Difference]: With dead ends: 1262 [2021-11-06 10:36:35,184 INFO L226 Difference]: Without dead ends: 1109 [2021-11-06 10:36:35,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:36:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-06 10:36:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 782. [2021-11-06 10:36:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 763 states have (on average 1.1690694626474443) internal successors, (892), 781 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 892 transitions. [2021-11-06 10:36:35,211 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 892 transitions. Word has length 125 [2021-11-06 10:36:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:35,211 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 892 transitions. [2021-11-06 10:36:35,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 892 transitions. [2021-11-06 10:36:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:36:35,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:35,212 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:36:35,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-06 10:36:35,213 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:36:35,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash -883284044, now seen corresponding path program 1 times [2021-11-06 10:36:35,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:35,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212739420] [2021-11-06 10:36:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:35,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:36:36,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:36,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212739420] [2021-11-06 10:36:36,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212739420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:36,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:36,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:36:36,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091426190] [2021-11-06 10:36:36,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:36:36,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:36,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:36:36,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:36:36,563 INFO L87 Difference]: Start difference. First operand 782 states and 892 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:47,745 INFO L93 Difference]: Finished difference Result 1188 states and 1363 transitions. [2021-11-06 10:36:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:36:47,746 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:36:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:47,748 INFO L225 Difference]: With dead ends: 1188 [2021-11-06 10:36:47,748 INFO L226 Difference]: Without dead ends: 1040 [2021-11-06 10:36:47,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:36:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-11-06 10:36:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 789. [2021-11-06 10:36:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 770 states have (on average 1.1688311688311688) internal successors, (900), 788 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 900 transitions. [2021-11-06 10:36:47,776 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 900 transitions. Word has length 125 [2021-11-06 10:36:47,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:47,776 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 900 transitions. [2021-11-06 10:36:47,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 900 transitions. [2021-11-06 10:36:47,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:36:47,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:47,777 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:36:47,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-06 10:36:47,777 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:36:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -203225674, now seen corresponding path program 1 times [2021-11-06 10:36:47,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:47,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847102386] [2021-11-06 10:36:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:47,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:36:48,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:48,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847102386] [2021-11-06 10:36:48,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847102386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:48,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:48,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:36:48,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135526608] [2021-11-06 10:36:48,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:36:48,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:48,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:36:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:36:48,908 INFO L87 Difference]: Start difference. First operand 789 states and 900 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:52,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:52,128 INFO L93 Difference]: Finished difference Result 1205 states and 1386 transitions. [2021-11-06 10:36:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:36:52,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:36:52,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:52,130 INFO L225 Difference]: With dead ends: 1205 [2021-11-06 10:36:52,131 INFO L226 Difference]: Without dead ends: 969 [2021-11-06 10:36:52,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:36:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-06 10:36:52,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 789. [2021-11-06 10:36:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 770 states have (on average 1.1597402597402597) internal successors, (893), 788 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 893 transitions. [2021-11-06 10:36:52,158 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 893 transitions. Word has length 125 [2021-11-06 10:36:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:52,159 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 893 transitions. [2021-11-06 10:36:52,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 893 transitions. [2021-11-06 10:36:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:36:52,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:52,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:36:52,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-06 10:36:52,160 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:36:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash 563107244, now seen corresponding path program 1 times [2021-11-06 10:36:52,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:52,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980582439] [2021-11-06 10:36:52,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:52,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:36:55,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:55,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980582439] [2021-11-06 10:36:55,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980582439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:55,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:55,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-06 10:36:55,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804238041] [2021-11-06 10:36:55,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-06 10:36:55,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:55,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-06 10:36:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:36:55,086 INFO L87 Difference]: Start difference. First operand 789 states and 893 transitions. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:26,789 INFO L93 Difference]: Finished difference Result 2211 states and 2469 transitions. [2021-11-06 10:37:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-06 10:37:26,790 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:37:26,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:26,792 INFO L225 Difference]: With dead ends: 2211 [2021-11-06 10:37:26,792 INFO L226 Difference]: Without dead ends: 1910 [2021-11-06 10:37:26,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=975, Invalid=4427, Unknown=0, NotChecked=0, Total=5402 [2021-11-06 10:37:26,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2021-11-06 10:37:26,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 789. [2021-11-06 10:37:26,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 770 states have (on average 1.1584415584415584) internal successors, (892), 788 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 892 transitions. [2021-11-06 10:37:26,824 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 892 transitions. Word has length 125 [2021-11-06 10:37:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:26,824 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 892 transitions. [2021-11-06 10:37:26,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 892 transitions. [2021-11-06 10:37:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:37:26,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:26,825 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:37:26,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 10:37:26,826 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:37:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1808632018, now seen corresponding path program 1 times [2021-11-06 10:37:26,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:26,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434311984] [2021-11-06 10:37:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:26,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:37:28,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:28,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434311984] [2021-11-06 10:37:28,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434311984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:28,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:28,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:37:28,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110531080] [2021-11-06 10:37:28,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:37:28,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:37:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:37:28,303 INFO L87 Difference]: Start difference. First operand 789 states and 892 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:40,430 INFO L93 Difference]: Finished difference Result 1614 states and 1815 transitions. [2021-11-06 10:37:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:37:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:37:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:40,432 INFO L225 Difference]: With dead ends: 1614 [2021-11-06 10:37:40,432 INFO L226 Difference]: Without dead ends: 1259 [2021-11-06 10:37:40,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:37:40,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-06 10:37:40,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 844. [2021-11-06 10:37:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 825 states have (on average 1.153939393939394) internal successors, (952), 843 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 952 transitions. [2021-11-06 10:37:40,462 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 952 transitions. Word has length 125 [2021-11-06 10:37:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:40,462 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 952 transitions. [2021-11-06 10:37:40,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 952 transitions. [2021-11-06 10:37:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:37:40,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:40,464 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:37:40,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-06 10:37:40,464 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:37:40,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:40,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2061682768, now seen corresponding path program 1 times [2021-11-06 10:37:40,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:40,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492234129] [2021-11-06 10:37:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:40,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:37:44,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:44,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492234129] [2021-11-06 10:37:44,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492234129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:44,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:44,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:37:44,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035461124] [2021-11-06 10:37:44,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:37:44,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:44,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:37:44,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:37:44,858 INFO L87 Difference]: Start difference. First operand 844 states and 952 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:57,204 INFO L93 Difference]: Finished difference Result 1436 states and 1620 transitions. [2021-11-06 10:37:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:37:57,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 10:37:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:57,206 INFO L225 Difference]: With dead ends: 1436 [2021-11-06 10:37:57,206 INFO L226 Difference]: Without dead ends: 906 [2021-11-06 10:37:57,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:37:57,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-11-06 10:37:57,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 825. [2021-11-06 10:37:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 806 states have (on average 1.1550868486352357) internal successors, (931), 824 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 931 transitions. [2021-11-06 10:37:57,234 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 931 transitions. Word has length 125 [2021-11-06 10:37:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:57,234 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 931 transitions. [2021-11-06 10:37:57,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 931 transitions. [2021-11-06 10:37:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-06 10:37:57,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:57,235 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:37:57,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-06 10:37:57,236 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:37:57,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash -656934112, now seen corresponding path program 1 times [2021-11-06 10:37:57,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:57,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824234593] [2021-11-06 10:37:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:57,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:37:57,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:57,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824234593] [2021-11-06 10:37:57,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824234593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:57,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:57,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:37:57,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81895553] [2021-11-06 10:37:57,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:37:57,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:37:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:37:57,522 INFO L87 Difference]: Start difference. First operand 825 states and 931 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:57,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:57,653 INFO L93 Difference]: Finished difference Result 1087 states and 1225 transitions. [2021-11-06 10:37:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:37:57,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2021-11-06 10:37:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:57,657 INFO L225 Difference]: With dead ends: 1087 [2021-11-06 10:37:57,657 INFO L226 Difference]: Without dead ends: 923 [2021-11-06 10:37:57,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:37:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-06 10:37:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 812. [2021-11-06 10:37:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 793 states have (on average 1.146279949558638) internal successors, (909), 811 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 909 transitions. [2021-11-06 10:37:57,686 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 909 transitions. Word has length 126 [2021-11-06 10:37:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:57,687 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 909 transitions. [2021-11-06 10:37:57,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 909 transitions. [2021-11-06 10:37:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 10:37:57,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:57,688 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:37:57,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-06 10:37:57,688 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:37:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:57,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1112159657, now seen corresponding path program 1 times [2021-11-06 10:37:57,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:57,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284515900] [2021-11-06 10:37:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:57,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:37:58,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:58,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284515900] [2021-11-06 10:37:58,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284515900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:58,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:58,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:37:58,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59696943] [2021-11-06 10:37:58,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:37:58,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:37:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:37:58,199 INFO L87 Difference]: Start difference. First operand 812 states and 909 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:58,756 INFO L93 Difference]: Finished difference Result 877 states and 984 transitions. [2021-11-06 10:37:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:37:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-06 10:37:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:58,757 INFO L225 Difference]: With dead ends: 877 [2021-11-06 10:37:58,757 INFO L226 Difference]: Without dead ends: 875 [2021-11-06 10:37:58,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:37:58,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-06 10:37:58,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 810. [2021-11-06 10:37:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 792 states have (on average 1.143939393939394) internal successors, (906), 809 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 906 transitions. [2021-11-06 10:37:58,798 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 906 transitions. Word has length 127 [2021-11-06 10:37:58,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:58,798 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 906 transitions. [2021-11-06 10:37:58,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 906 transitions. [2021-11-06 10:37:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 10:37:58,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:58,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:37:58,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-06 10:37:58,800 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:37:58,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1610310257, now seen corresponding path program 1 times [2021-11-06 10:37:58,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:58,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925958175] [2021-11-06 10:37:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:58,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:37:59,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:59,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925958175] [2021-11-06 10:37:59,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925958175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:59,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:59,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:37:59,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536627385] [2021-11-06 10:37:59,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:37:59,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:37:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:37:59,282 INFO L87 Difference]: Start difference. First operand 810 states and 906 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:01,270 INFO L93 Difference]: Finished difference Result 1171 states and 1304 transitions. [2021-11-06 10:38:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:38:01,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-06 10:38:01,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:01,272 INFO L225 Difference]: With dead ends: 1171 [2021-11-06 10:38:01,272 INFO L226 Difference]: Without dead ends: 1163 [2021-11-06 10:38:01,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:38:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-11-06 10:38:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 822. [2021-11-06 10:38:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 804 states have (on average 1.1417910447761195) internal successors, (918), 821 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 918 transitions. [2021-11-06 10:38:01,319 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 918 transitions. Word has length 127 [2021-11-06 10:38:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:01,320 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 918 transitions. [2021-11-06 10:38:01,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 918 transitions. [2021-11-06 10:38:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 10:38:01,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:01,321 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:38:01,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-06 10:38:01,321 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:38:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:01,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1875310413, now seen corresponding path program 1 times [2021-11-06 10:38:01,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:01,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810891459] [2021-11-06 10:38:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:01,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:38:02,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:02,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810891459] [2021-11-06 10:38:02,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810891459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:02,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:02,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:38:02,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336080864] [2021-11-06 10:38:02,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:38:02,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:38:02,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:38:02,986 INFO L87 Difference]: Start difference. First operand 822 states and 918 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:09,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:09,097 INFO L93 Difference]: Finished difference Result 1253 states and 1393 transitions. [2021-11-06 10:38:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:38:09,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-06 10:38:09,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:09,099 INFO L225 Difference]: With dead ends: 1253 [2021-11-06 10:38:09,099 INFO L226 Difference]: Without dead ends: 1128 [2021-11-06 10:38:09,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:38:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-11-06 10:38:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 823. [2021-11-06 10:38:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 805 states have (on average 1.141614906832298) internal successors, (919), 822 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 919 transitions. [2021-11-06 10:38:09,131 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 919 transitions. Word has length 127 [2021-11-06 10:38:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:09,131 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 919 transitions. [2021-11-06 10:38:09,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 919 transitions. [2021-11-06 10:38:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 10:38:09,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:09,132 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:38:09,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-06 10:38:09,133 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:38:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash -661280949, now seen corresponding path program 1 times [2021-11-06 10:38:09,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:09,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465328503] [2021-11-06 10:38:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:09,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:38:15,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:15,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465328503] [2021-11-06 10:38:15,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465328503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:15,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:15,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-06 10:38:15,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094457922] [2021-11-06 10:38:15,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-06 10:38:15,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-06 10:38:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-11-06 10:38:15,397 INFO L87 Difference]: Start difference. First operand 823 states and 919 transitions. Second operand has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:54,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:54,319 INFO L93 Difference]: Finished difference Result 1592 states and 1766 transitions. [2021-11-06 10:38:54,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 10:38:54,320 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-06 10:38:54,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:54,322 INFO L225 Difference]: With dead ends: 1592 [2021-11-06 10:38:54,322 INFO L226 Difference]: Without dead ends: 1590 [2021-11-06 10:38:54,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=400, Invalid=1762, Unknown=0, NotChecked=0, Total=2162 [2021-11-06 10:38:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-06 10:38:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1023. [2021-11-06 10:38:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1005 states have (on average 1.137313432835821) internal successors, (1143), 1022 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1143 transitions. [2021-11-06 10:38:54,364 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1143 transitions. Word has length 129 [2021-11-06 10:38:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:54,364 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1143 transitions. [2021-11-06 10:38:54,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1143 transitions. [2021-11-06 10:38:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 10:38:54,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:54,365 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:38:54,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-06 10:38:54,366 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:38:54,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:54,366 INFO L85 PathProgramCache]: Analyzing trace with hash 536932685, now seen corresponding path program 1 times [2021-11-06 10:38:54,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:54,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768117972] [2021-11-06 10:38:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:54,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:38:56,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:56,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768117972] [2021-11-06 10:38:56,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768117972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:56,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:56,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:38:56,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012021539] [2021-11-06 10:38:56,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:38:56,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:38:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:38:56,133 INFO L87 Difference]: Start difference. First operand 1023 states and 1143 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:39:03,274 INFO L93 Difference]: Finished difference Result 1981 states and 2236 transitions. [2021-11-06 10:39:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:39:03,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-06 10:39:03,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:39:03,277 INFO L225 Difference]: With dead ends: 1981 [2021-11-06 10:39:03,277 INFO L226 Difference]: Without dead ends: 1728 [2021-11-06 10:39:03,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:39:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-11-06 10:39:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1021. [2021-11-06 10:39:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1003 states have (on average 1.1375872382851446) internal successors, (1141), 1020 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1141 transitions. [2021-11-06 10:39:03,319 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1141 transitions. Word has length 131 [2021-11-06 10:39:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:39:03,319 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 1141 transitions. [2021-11-06 10:39:03,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1141 transitions. [2021-11-06 10:39:03,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 10:39:03,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:39:03,320 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:39:03,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-06 10:39:03,320 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:39:03,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:39:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash 164313485, now seen corresponding path program 1 times [2021-11-06 10:39:03,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:39:03,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637822287] [2021-11-06 10:39:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:39:03,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:39:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:39:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:39:13,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:39:13,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637822287] [2021-11-06 10:39:13,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637822287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:39:13,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:39:13,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-06 10:39:13,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403134280] [2021-11-06 10:39:13,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-06 10:39:13,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:39:13,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-06 10:39:13,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:39:13,470 INFO L87 Difference]: Start difference. First operand 1021 states and 1141 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:13,669 INFO L93 Difference]: Finished difference Result 2248 states and 2488 transitions. [2021-11-06 10:40:13,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-06 10:40:13,670 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-06 10:40:13,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:13,673 INFO L225 Difference]: With dead ends: 2248 [2021-11-06 10:40:13,673 INFO L226 Difference]: Without dead ends: 2133 [2021-11-06 10:40:13,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3463 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=1501, Invalid=9629, Unknown=0, NotChecked=0, Total=11130 [2021-11-06 10:40:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2021-11-06 10:40:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1226. [2021-11-06 10:40:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1208 states have (on average 1.1357615894039734) internal successors, (1372), 1225 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1372 transitions. [2021-11-06 10:40:13,734 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1372 transitions. Word has length 131 [2021-11-06 10:40:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:13,735 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1372 transitions. [2021-11-06 10:40:13,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1372 transitions. [2021-11-06 10:40:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 10:40:13,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:13,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:40:13,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-06 10:40:13,736 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:40:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1512455157, now seen corresponding path program 1 times [2021-11-06 10:40:13,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:13,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453152045] [2021-11-06 10:40:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:13,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:40:21,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:21,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453152045] [2021-11-06 10:40:21,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453152045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:21,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:21,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:40:21,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227332821] [2021-11-06 10:40:21,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:40:21,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:40:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:40:21,013 INFO L87 Difference]: Start difference. First operand 1226 states and 1372 transitions. Second operand has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:33,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:33,196 INFO L93 Difference]: Finished difference Result 1591 states and 1775 transitions. [2021-11-06 10:40:33,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 10:40:33,197 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-06 10:40:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:33,198 INFO L225 Difference]: With dead ends: 1591 [2021-11-06 10:40:33,198 INFO L226 Difference]: Without dead ends: 967 [2021-11-06 10:40:33,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 10:40:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-11-06 10:40:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 913. [2021-11-06 10:40:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 895 states have (on average 1.1430167597765364) internal successors, (1023), 912 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1023 transitions. [2021-11-06 10:40:33,238 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1023 transitions. Word has length 131 [2021-11-06 10:40:33,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:33,238 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1023 transitions. [2021-11-06 10:40:33,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1023 transitions. [2021-11-06 10:40:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 10:40:33,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:33,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:40:33,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-06 10:40:33,239 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:40:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:33,239 INFO L85 PathProgramCache]: Analyzing trace with hash 283881935, now seen corresponding path program 1 times [2021-11-06 10:40:33,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:33,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303044653] [2021-11-06 10:40:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:33,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:40:35,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:35,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303044653] [2021-11-06 10:40:35,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303044653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:35,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:35,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:40:35,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021192870] [2021-11-06 10:40:35,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:40:35,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:35,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:40:35,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:40:35,555 INFO L87 Difference]: Start difference. First operand 913 states and 1023 transitions. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:52,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:52,725 INFO L93 Difference]: Finished difference Result 1560 states and 1747 transitions. [2021-11-06 10:40:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 10:40:52,726 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-06 10:40:52,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:52,728 INFO L225 Difference]: With dead ends: 1560 [2021-11-06 10:40:52,728 INFO L226 Difference]: Without dead ends: 1357 [2021-11-06 10:40:52,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 10:40:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-11-06 10:40:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 913. [2021-11-06 10:40:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 895 states have (on average 1.140782122905028) internal successors, (1021), 912 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1021 transitions. [2021-11-06 10:40:52,769 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1021 transitions. Word has length 131 [2021-11-06 10:40:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:52,770 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1021 transitions. [2021-11-06 10:40:52,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1021 transitions. [2021-11-06 10:40:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 10:40:52,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:52,771 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:40:52,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-06 10:40:52,771 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:40:52,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2087857327, now seen corresponding path program 1 times [2021-11-06 10:40:52,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:52,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827266573] [2021-11-06 10:40:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:52,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:40:56,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:56,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827266573] [2021-11-06 10:40:56,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827266573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:56,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:56,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-06 10:40:56,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321131680] [2021-11-06 10:40:56,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 10:40:56,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:56,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 10:40:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:40:56,119 INFO L87 Difference]: Start difference. First operand 913 states and 1021 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:25,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:41:25,941 INFO L93 Difference]: Finished difference Result 1636 states and 1817 transitions. [2021-11-06 10:41:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-06 10:41:25,942 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-06 10:41:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:41:25,944 INFO L225 Difference]: With dead ends: 1636 [2021-11-06 10:41:25,944 INFO L226 Difference]: Without dead ends: 1431 [2021-11-06 10:41:25,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=517, Invalid=1835, Unknown=0, NotChecked=0, Total=2352 [2021-11-06 10:41:25,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-11-06 10:41:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 883. [2021-11-06 10:41:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 865 states have (on average 1.1433526011560693) internal successors, (989), 882 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 989 transitions. [2021-11-06 10:41:25,994 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 989 transitions. Word has length 131 [2021-11-06 10:41:25,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:41:25,995 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 989 transitions. [2021-11-06 10:41:25,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 989 transitions. [2021-11-06 10:41:25,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 10:41:25,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:41:25,996 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:41:25,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-06 10:41:25,996 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:41:25,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:41:25,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1587871297, now seen corresponding path program 1 times [2021-11-06 10:41:25,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:41:25,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847114194] [2021-11-06 10:41:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:41:25,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:41:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:41:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:41:30,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:41:30,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847114194] [2021-11-06 10:41:30,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847114194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:41:30,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:41:30,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:41:30,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495840074] [2021-11-06 10:41:30,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:41:30,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:41:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:41:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:41:30,203 INFO L87 Difference]: Start difference. First operand 883 states and 989 transitions. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:41:47,656 INFO L93 Difference]: Finished difference Result 1254 states and 1410 transitions. [2021-11-06 10:41:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:41:47,656 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-06 10:41:47,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:41:47,657 INFO L225 Difference]: With dead ends: 1254 [2021-11-06 10:41:47,657 INFO L226 Difference]: Without dead ends: 948 [2021-11-06 10:41:47,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2021-11-06 10:41:47,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-11-06 10:41:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 813. [2021-11-06 10:41:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 795 states have (on average 1.1484276729559748) internal successors, (913), 812 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 913 transitions. [2021-11-06 10:41:47,696 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 913 transitions. Word has length 131 [2021-11-06 10:41:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:41:47,696 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 913 transitions. [2021-11-06 10:41:47,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 913 transitions. [2021-11-06 10:41:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 10:41:47,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:41:47,697 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:41:47,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-06 10:41:47,697 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:41:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:41:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash -280841822, now seen corresponding path program 1 times [2021-11-06 10:41:47,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:41:47,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796959526] [2021-11-06 10:41:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:41:47,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:41:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:41:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:41:49,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:41:49,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796959526] [2021-11-06 10:41:49,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796959526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:41:49,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:41:49,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:41:49,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752943977] [2021-11-06 10:41:49,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:41:49,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:41:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:41:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:41:49,946 INFO L87 Difference]: Start difference. First operand 813 states and 913 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:42:06,727 INFO L93 Difference]: Finished difference Result 2003 states and 2246 transitions. [2021-11-06 10:42:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-06 10:42:06,728 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 10:42:06,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:42:06,730 INFO L225 Difference]: With dead ends: 2003 [2021-11-06 10:42:06,730 INFO L226 Difference]: Without dead ends: 1779 [2021-11-06 10:42:06,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=723, Invalid=3567, Unknown=0, NotChecked=0, Total=4290 [2021-11-06 10:42:06,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2021-11-06 10:42:06,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 870. [2021-11-06 10:42:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 852 states have (on average 1.1490610328638498) internal successors, (979), 869 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 979 transitions. [2021-11-06 10:42:06,777 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 979 transitions. Word has length 137 [2021-11-06 10:42:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:42:06,777 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 979 transitions. [2021-11-06 10:42:06,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 979 transitions. [2021-11-06 10:42:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 10:42:06,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:42:06,778 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:42:06,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-06 10:42:06,779 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:42:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:42:06,779 INFO L85 PathProgramCache]: Analyzing trace with hash -22676384, now seen corresponding path program 1 times [2021-11-06 10:42:06,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:42:06,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033742567] [2021-11-06 10:42:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:42:06,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:42:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:42:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:42:09,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:42:09,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033742567] [2021-11-06 10:42:09,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033742567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:42:09,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:42:09,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 10:42:09,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758285285] [2021-11-06 10:42:09,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:42:09,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:42:09,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:42:09,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:42:09,114 INFO L87 Difference]: Start difference. First operand 870 states and 979 transitions. Second operand has 16 states, 16 states have (on average 8.5625) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:27,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:42:27,620 INFO L93 Difference]: Finished difference Result 1433 states and 1599 transitions. [2021-11-06 10:42:27,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:42:27,621 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 10:42:27,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:42:27,623 INFO L225 Difference]: With dead ends: 1433 [2021-11-06 10:42:27,623 INFO L226 Difference]: Without dead ends: 1092 [2021-11-06 10:42:27,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-11-06 10:42:27,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-11-06 10:42:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 871. [2021-11-06 10:42:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 853 states have (on average 1.145369284876905) internal successors, (977), 870 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 977 transitions. [2021-11-06 10:42:27,680 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 977 transitions. Word has length 137 [2021-11-06 10:42:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:42:27,681 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 977 transitions. [2021-11-06 10:42:27,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 977 transitions. [2021-11-06 10:42:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 10:42:27,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:42:27,682 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:42:27,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-06 10:42:27,683 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:42:27,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:42:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1718278240, now seen corresponding path program 1 times [2021-11-06 10:42:27,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:42:27,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388074375] [2021-11-06 10:42:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:42:27,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:42:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:42:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:42:29,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:42:29,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388074375] [2021-11-06 10:42:29,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388074375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:42:29,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:42:29,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:42:29,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549859628] [2021-11-06 10:42:29,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:42:29,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:42:29,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:42:29,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:42:29,799 INFO L87 Difference]: Start difference. First operand 871 states and 977 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:42:39,720 INFO L93 Difference]: Finished difference Result 2058 states and 2317 transitions. [2021-11-06 10:42:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:42:39,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 10:42:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:42:39,723 INFO L225 Difference]: With dead ends: 2058 [2021-11-06 10:42:39,723 INFO L226 Difference]: Without dead ends: 1670 [2021-11-06 10:42:39,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:42:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-11-06 10:42:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1038. [2021-11-06 10:42:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1020 states have (on average 1.1313725490196078) internal successors, (1154), 1037 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1154 transitions. [2021-11-06 10:42:39,774 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1154 transitions. Word has length 137 [2021-11-06 10:42:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:42:39,774 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1154 transitions. [2021-11-06 10:42:39,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1154 transitions. [2021-11-06 10:42:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 10:42:39,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:42:39,775 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:42:39,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-06 10:42:39,775 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:42:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:42:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash 299675036, now seen corresponding path program 1 times [2021-11-06 10:42:39,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:42:39,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490574337] [2021-11-06 10:42:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:42:39,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:42:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:42:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:42:41,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:42:41,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490574337] [2021-11-06 10:42:41,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490574337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:42:41,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:42:41,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:42:41,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199325819] [2021-11-06 10:42:41,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:42:41,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:42:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:42:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:42:41,268 INFO L87 Difference]: Start difference. First operand 1038 states and 1154 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:42:47,659 INFO L93 Difference]: Finished difference Result 1507 states and 1686 transitions. [2021-11-06 10:42:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:42:47,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 10:42:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:42:47,662 INFO L225 Difference]: With dead ends: 1507 [2021-11-06 10:42:47,662 INFO L226 Difference]: Without dead ends: 1376 [2021-11-06 10:42:47,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:42:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-06 10:42:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1084. [2021-11-06 10:42:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1066 states have (on average 1.1360225140712945) internal successors, (1211), 1083 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1211 transitions. [2021-11-06 10:42:47,712 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1211 transitions. Word has length 137 [2021-11-06 10:42:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:42:47,712 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 1211 transitions. [2021-11-06 10:42:47,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1211 transitions. [2021-11-06 10:42:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 10:42:47,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:42:47,714 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:42:47,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-06 10:42:47,714 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:42:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:42:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1391500584, now seen corresponding path program 1 times [2021-11-06 10:42:47,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:42:47,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767542425] [2021-11-06 10:42:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:42:47,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:42:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:42:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:42:49,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:42:49,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767542425] [2021-11-06 10:42:49,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767542425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:42:49,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:42:49,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:42:49,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939737957] [2021-11-06 10:42:49,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:42:49,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:42:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:42:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:42:49,598 INFO L87 Difference]: Start difference. First operand 1084 states and 1211 transitions. Second operand has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:58,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:42:58,617 INFO L93 Difference]: Finished difference Result 1500 states and 1676 transitions. [2021-11-06 10:42:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:42:58,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 10:42:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:42:58,619 INFO L225 Difference]: With dead ends: 1500 [2021-11-06 10:42:58,619 INFO L226 Difference]: Without dead ends: 1376 [2021-11-06 10:42:58,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:42:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-06 10:42:58,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1091. [2021-11-06 10:42:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1073 states have (on average 1.135135135135135) internal successors, (1218), 1090 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1218 transitions. [2021-11-06 10:42:58,681 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1218 transitions. Word has length 137 [2021-11-06 10:42:58,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:42:58,681 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 1218 transitions. [2021-11-06 10:42:58,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1218 transitions. [2021-11-06 10:42:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 10:42:58,683 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:42:58,683 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:42:58,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-06 10:42:58,683 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:42:58,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:42:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2072064226, now seen corresponding path program 1 times [2021-11-06 10:42:58,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:42:58,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797091834] [2021-11-06 10:42:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:42:58,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:43:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:43:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:43:01,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:43:01,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797091834] [2021-11-06 10:43:01,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797091834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:43:01,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:43:01,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:43:01,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975772147] [2021-11-06 10:43:01,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:43:01,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:43:01,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:43:01,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:43:01,656 INFO L87 Difference]: Start difference. First operand 1091 states and 1218 transitions. Second operand has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15