./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.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.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 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:29:19,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:29:19,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:29:19,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:29:19,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:29:19,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:29:19,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:29:19,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:29:19,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:29:19,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:29:19,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:29:19,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:29:19,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:29:19,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:29:19,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:29:19,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:29:19,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:29:19,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:29:19,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:29:19,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:29:19,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:29:19,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:29:19,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:29:19,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:29:19,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:29:19,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:29:19,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:29:19,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:29:19,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:29:19,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:29:19,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:29:19,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:29:19,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:29:19,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:29:19,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:29:19,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:29:19,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:29:19,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:29:19,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:29:19,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:29:19,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:29:19,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:29:19,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:29:19,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:29:19,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:29:19,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:29:19,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:29:19,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:29:19,925 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:29:19,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:29:19,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:29:19,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:29:19,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:29:19,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:29:19,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:29:19,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:29:19,927 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:29:19,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:29:19,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:29:19,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:29:19,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:29:19,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:29:19,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:29:19,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:29:19,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:29:19,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:29:19,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:29:19,928 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:29:19,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:29:19,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:29:19,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:29:19,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c [2021-11-06 10:29:20,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:29:20,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:29:20,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:29:20,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:29:20,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:29:20,175 INFO L432 ainManager$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.i [2021-11-06 10:29:20,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef6b4256/dfd1dd8ead744ce89f7fb28b95ef3c59/FLAGe32f209c6 [2021-11-06 10:29:20,842 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:29:20,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-06 10:29:20,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef6b4256/dfd1dd8ead744ce89f7fb28b95ef3c59/FLAGe32f209c6 [2021-11-06 10:29:20,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef6b4256/dfd1dd8ead744ce89f7fb28b95ef3c59 [2021-11-06 10:29:20,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:29:20,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:29:20,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:29:20,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:29:20,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:29:20,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:20" (1/1) ... [2021-11-06 10:29:20,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b1e9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:20, skipping insertion in model container [2021-11-06 10:29:20,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:20" (1/1) ... [2021-11-06 10:29:20,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:29:21,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:29:21,314 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.i[4510,4523] [2021-11-06 10:29:21,319 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.i[4570,4583] [2021-11-06 10:29:21,336 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:29:21,342 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:29:21,784 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:21,784 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:21,785 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:21,785 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:21,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:21,794 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:21,797 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:21,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:21,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,016 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:29:22,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:29:22,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:29:22,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:29:22,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:29:22,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:29:22,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:29:22,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:29:22,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:29:22,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:29:22,120 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:29:22,214 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:29:22,299 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:29:22,315 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.i[4510,4523] [2021-11-06 10:29:22,317 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.i[4570,4583] [2021-11-06 10:29:22,318 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:29:22,319 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:29:22,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,355 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,362 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,394 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:29:22,395 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:29:22,395 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:29:22,396 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:29:22,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:29:22,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:29:22,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:29:22,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:29:22,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:29:22,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:29:22,417 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:29:22,486 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:29:22,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:29:22,646 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:29:22,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22 WrapperNode [2021-11-06 10:29:22,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:29:22,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:29:22,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:29:22,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:29:22,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:29:22,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:29:22,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:29:22,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:29:22,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:29:22,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:29:22,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:29:22,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:29:22,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2021-11-06 10:29:22,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:29:22,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:29:22,964 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 10:29:22,997 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 10:29:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:29:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:29:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:29:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:29:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:29:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:29:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:29:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:29:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:29:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:29:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:29:31,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:29:31,089 INFO L299 CfgBuilder]: Removed 143 assume(true) statements. [2021-11-06 10:29:31,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:31 BoogieIcfgContainer [2021-11-06 10:29:31,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:29:31,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:29:31,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:29:31,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:29:31,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:29:20" (1/3) ... [2021-11-06 10:29:31,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cc901b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:31, skipping insertion in model container [2021-11-06 10:29:31,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (2/3) ... [2021-11-06 10:29:31,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cc901b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:31, skipping insertion in model container [2021-11-06 10:29:31,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:31" (3/3) ... [2021-11-06 10:29:31,097 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-06 10:29:31,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:29:31,101 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-06 10:29:31,131 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:29:31,135 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 10:29:31,136 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-06 10:29:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 273 states have (on average 1.4945054945054945) internal successors, (408), 292 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:31,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 10:29:31,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:31,154 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] [2021-11-06 10:29:31,155 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 10:29:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:31,158 INFO L85 PathProgramCache]: Analyzing trace with hash -389295303, now seen corresponding path program 1 times [2021-11-06 10:29:31,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:31,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143505015] [2021-11-06 10:29:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:31,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:31,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:31,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143505015] [2021-11-06 10:29:31,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143505015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:31,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:31,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:29:31,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313822191] [2021-11-06 10:29:31,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:29:31,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:29:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:29:31,740 INFO L87 Difference]: Start difference. First operand has 293 states, 273 states have (on average 1.4945054945054945) internal successors, (408), 292 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:31,796 INFO L93 Difference]: Finished difference Result 582 states and 811 transitions. [2021-11-06 10:29:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:29:31,797 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-06 10:29:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:31,822 INFO L225 Difference]: With dead ends: 582 [2021-11-06 10:29:31,826 INFO L226 Difference]: Without dead ends: 286 [2021-11-06 10:29:31,832 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 10:29:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-06 10:29:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-06 10:29:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 267 states have (on average 1.3558052434456929) internal successors, (362), 285 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 362 transitions. [2021-11-06 10:29:31,877 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 362 transitions. Word has length 60 [2021-11-06 10:29:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:31,877 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 362 transitions. [2021-11-06 10:29:31,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:31,878 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 362 transitions. [2021-11-06 10:29:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 10:29:31,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:31,879 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] [2021-11-06 10:29:31,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:29:31,880 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 10:29:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash 20483131, now seen corresponding path program 1 times [2021-11-06 10:29:31,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:31,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7269164] [2021-11-06 10:29:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:31,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:32,108 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 10:29:32,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:32,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7269164] [2021-11-06 10:29:32,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7269164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:32,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:32,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:32,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956206129] [2021-11-06 10:29:32,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:32,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:32,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:32,111 INFO L87 Difference]: Start difference. First operand 286 states and 362 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:32,354 INFO L93 Difference]: Finished difference Result 546 states and 690 transitions. [2021-11-06 10:29:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:29:32,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-06 10:29:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:32,356 INFO L225 Difference]: With dead ends: 546 [2021-11-06 10:29:32,356 INFO L226 Difference]: Without dead ends: 286 [2021-11-06 10:29:32,357 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 10:29:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-06 10:29:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-06 10:29:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 267 states have (on average 1.344569288389513) internal successors, (359), 285 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 10:29:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 359 transitions. [2021-11-06 10:29:32,366 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 359 transitions. Word has length 60 [2021-11-06 10:29:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:32,366 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 359 transitions. [2021-11-06 10:29:32,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 359 transitions. [2021-11-06 10:29:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 10:29:32,368 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:32,368 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] [2021-11-06 10:29:32,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:29:32,368 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 10:29:32,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:32,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1562718067, now seen corresponding path program 1 times [2021-11-06 10:29:32,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:32,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005985687] [2021-11-06 10:29:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:32,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:32,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:32,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005985687] [2021-11-06 10:29:32,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005985687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:32,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:32,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:32,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110242027] [2021-11-06 10:29:32,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:32,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:32,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:32,575 INFO L87 Difference]: Start difference. First operand 286 states and 359 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:33,060 INFO L93 Difference]: Finished difference Result 637 states and 812 transitions. [2021-11-06 10:29:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:29:33,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 10:29:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:33,062 INFO L225 Difference]: With dead ends: 637 [2021-11-06 10:29:33,062 INFO L226 Difference]: Without dead ends: 376 [2021-11-06 10:29:33,062 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 10:29:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-06 10:29:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 304. [2021-11-06 10:29:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.3228070175438595) internal successors, (377), 303 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 10:29:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 377 transitions. [2021-11-06 10:29:33,080 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 377 transitions. Word has length 72 [2021-11-06 10:29:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:33,080 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 377 transitions. [2021-11-06 10:29:33,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:33,081 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 377 transitions. [2021-11-06 10:29:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 10:29:33,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:33,084 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] [2021-11-06 10:29:33,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:29:33,085 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 10:29:33,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:33,095 INFO L85 PathProgramCache]: Analyzing trace with hash 301800817, now seen corresponding path program 1 times [2021-11-06 10:29:33,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:33,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418789404] [2021-11-06 10:29:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:33,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:33,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:33,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418789404] [2021-11-06 10:29:33,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418789404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:33,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:33,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:33,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801240071] [2021-11-06 10:29:33,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:33,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:33,319 INFO L87 Difference]: Start difference. First operand 304 states and 377 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:33,503 INFO L93 Difference]: Finished difference Result 550 states and 681 transitions. [2021-11-06 10:29:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:29:33,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 10:29:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:33,504 INFO L225 Difference]: With dead ends: 550 [2021-11-06 10:29:33,504 INFO L226 Difference]: Without dead ends: 304 [2021-11-06 10:29:33,505 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 10:29:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-06 10:29:33,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-06 10:29:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.3157894736842106) internal successors, (375), 303 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 10:29:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 375 transitions. [2021-11-06 10:29:33,510 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 375 transitions. Word has length 72 [2021-11-06 10:29:33,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:33,510 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 375 transitions. [2021-11-06 10:29:33,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:33,510 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 375 transitions. [2021-11-06 10:29:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 10:29:33,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:33,517 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] [2021-11-06 10:29:33,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:29:33,517 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 10:29:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:33,519 INFO L85 PathProgramCache]: Analyzing trace with hash 193243142, now seen corresponding path program 1 times [2021-11-06 10:29:33,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:33,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242421852] [2021-11-06 10:29:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:33,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:33,825 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 10:29:33,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:33,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242421852] [2021-11-06 10:29:33,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242421852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:33,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:33,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:33,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671625742] [2021-11-06 10:29:33,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:33,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:33,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:33,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:33,842 INFO L87 Difference]: Start difference. First operand 304 states and 375 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:34,002 INFO L93 Difference]: Finished difference Result 502 states and 615 transitions. [2021-11-06 10:29:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:29:34,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 10:29:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:34,003 INFO L225 Difference]: With dead ends: 502 [2021-11-06 10:29:34,003 INFO L226 Difference]: Without dead ends: 304 [2021-11-06 10:29:34,004 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 10:29:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-06 10:29:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-06 10:29:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.312280701754386) internal successors, (374), 303 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 10:29:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 374 transitions. [2021-11-06 10:29:34,009 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 374 transitions. Word has length 78 [2021-11-06 10:29:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:34,009 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 374 transitions. [2021-11-06 10:29:34,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 374 transitions. [2021-11-06 10:29:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 10:29:34,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:34,010 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] [2021-11-06 10:29:34,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:29:34,010 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 10:29:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash 450269211, now seen corresponding path program 1 times [2021-11-06 10:29:34,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:34,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62594467] [2021-11-06 10:29:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:34,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:34,434 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 10:29:34,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:34,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62594467] [2021-11-06 10:29:34,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62594467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:34,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:34,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:29:34,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767031697] [2021-11-06 10:29:34,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:29:34,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:29:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:29:34,436 INFO L87 Difference]: Start difference. First operand 304 states and 374 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 10:29:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:34,746 INFO L93 Difference]: Finished difference Result 483 states and 588 transitions. [2021-11-06 10:29:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:29:34,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-06 10:29:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:34,748 INFO L225 Difference]: With dead ends: 483 [2021-11-06 10:29:34,748 INFO L226 Difference]: Without dead ends: 304 [2021-11-06 10:29:34,749 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 10:29:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-06 10:29:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-06 10:29:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.3087719298245615) internal successors, (373), 303 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 10:29:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 373 transitions. [2021-11-06 10:29:34,755 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 373 transitions. Word has length 84 [2021-11-06 10:29:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:34,755 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 373 transitions. [2021-11-06 10:29:34,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 10:29:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 373 transitions. [2021-11-06 10:29:34,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 10:29:34,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:34,758 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] [2021-11-06 10:29:34,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:29:34,759 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 10:29:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:34,759 INFO L85 PathProgramCache]: Analyzing trace with hash 212824488, now seen corresponding path program 1 times [2021-11-06 10:29:34,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:34,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322804521] [2021-11-06 10:29:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:34,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:34,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:34,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322804521] [2021-11-06 10:29:34,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322804521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:34,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:34,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:29:34,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111626024] [2021-11-06 10:29:34,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:29:34,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:34,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:29:34,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:29:34,981 INFO L87 Difference]: Start difference. First operand 304 states and 373 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:35,526 INFO L93 Difference]: Finished difference Result 769 states and 967 transitions. [2021-11-06 10:29:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:29:35,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-06 10:29:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:35,528 INFO L225 Difference]: With dead ends: 769 [2021-11-06 10:29:35,528 INFO L226 Difference]: Without dead ends: 484 [2021-11-06 10:29:35,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:29:35,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-06 10:29:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 322. [2021-11-06 10:29:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 303 states have (on average 1.2904290429042904) internal successors, (391), 321 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 10:29:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 391 transitions. [2021-11-06 10:29:35,533 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 391 transitions. Word has length 90 [2021-11-06 10:29:35,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:35,534 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 391 transitions. [2021-11-06 10:29:35,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 391 transitions. [2021-11-06 10:29:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 10:29:35,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:35,534 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] [2021-11-06 10:29:35,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:29:35,535 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 10:29:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1901768230, now seen corresponding path program 1 times [2021-11-06 10:29:35,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:35,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162206120] [2021-11-06 10:29:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:35,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:36,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:36,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162206120] [2021-11-06 10:29:36,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162206120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:36,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:36,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:29:36,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749770003] [2021-11-06 10:29:36,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:29:36,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:36,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:29:36,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:29:36,020 INFO L87 Difference]: Start difference. First operand 322 states and 391 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:36,420 INFO L93 Difference]: Finished difference Result 456 states and 543 transitions. [2021-11-06 10:29:36,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:29:36,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-06 10:29:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:36,422 INFO L225 Difference]: With dead ends: 456 [2021-11-06 10:29:36,422 INFO L226 Difference]: Without dead ends: 322 [2021-11-06 10:29:36,422 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 10:29:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-06 10:29:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-11-06 10:29:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 303 states have (on average 1.283828382838284) internal successors, (389), 321 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 389 transitions. [2021-11-06 10:29:36,427 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 389 transitions. Word has length 90 [2021-11-06 10:29:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:36,427 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 389 transitions. [2021-11-06 10:29:36,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 389 transitions. [2021-11-06 10:29:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 10:29:36,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:36,428 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] [2021-11-06 10:29:36,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 10:29:36,428 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 10:29:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:36,428 INFO L85 PathProgramCache]: Analyzing trace with hash -369000709, now seen corresponding path program 1 times [2021-11-06 10:29:36,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:36,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177411655] [2021-11-06 10:29:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:36,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:36,958 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 10:29:36,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:36,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177411655] [2021-11-06 10:29:36,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177411655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:36,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:36,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:29:36,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998868275] [2021-11-06 10:29:36,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:29:36,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:29:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:29:36,959 INFO L87 Difference]: Start difference. First operand 322 states and 389 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:37,833 INFO L93 Difference]: Finished difference Result 532 states and 623 transitions. [2021-11-06 10:29:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:29:37,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-06 10:29:37,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:37,835 INFO L225 Difference]: With dead ends: 532 [2021-11-06 10:29:37,835 INFO L226 Difference]: Without dead ends: 524 [2021-11-06 10:29:37,836 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 10:29:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-06 10:29:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 338. [2021-11-06 10:29:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 319 states have (on average 1.2695924764890283) internal successors, (405), 337 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 405 transitions. [2021-11-06 10:29:37,842 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 405 transitions. Word has length 96 [2021-11-06 10:29:37,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:37,843 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 405 transitions. [2021-11-06 10:29:37,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 405 transitions. [2021-11-06 10:29:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 10:29:37,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:37,844 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 10:29:37,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 10:29:37,844 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 10:29:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash 544006001, now seen corresponding path program 1 times [2021-11-06 10:29:37,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:37,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707178334] [2021-11-06 10:29:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:37,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:38,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:38,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707178334] [2021-11-06 10:29:38,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707178334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:38,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:38,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:29:38,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845153633] [2021-11-06 10:29:38,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:29:38,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:29:38,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:29:38,536 INFO L87 Difference]: Start difference. First operand 338 states and 405 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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 10:29:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:41,894 INFO L93 Difference]: Finished difference Result 953 states and 1139 transitions. [2021-11-06 10:29:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:29:41,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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 10:29:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:41,897 INFO L225 Difference]: With dead ends: 953 [2021-11-06 10:29:41,897 INFO L226 Difference]: Without dead ends: 639 [2021-11-06 10:29:41,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 10:29:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-06 10:29:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 365. [2021-11-06 10:29:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 346 states have (on average 1.2485549132947977) internal successors, (432), 364 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 10:29:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 432 transitions. [2021-11-06 10:29:41,906 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 432 transitions. Word has length 100 [2021-11-06 10:29:41,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:41,906 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 432 transitions. [2021-11-06 10:29:41,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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 10:29:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 432 transitions. [2021-11-06 10:29:41,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 10:29:41,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:41,907 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 10:29:41,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 10:29:41,907 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 10:29:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1224064371, now seen corresponding path program 1 times [2021-11-06 10:29:41,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:41,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626948496] [2021-11-06 10:29:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:41,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:43,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:43,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626948496] [2021-11-06 10:29:43,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626948496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:43,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:43,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:29:43,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492035650] [2021-11-06 10:29:43,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:29:43,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:43,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:29:43,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:29:43,597 INFO L87 Difference]: Start difference. First operand 365 states and 432 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 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 10:30:08,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:08,262 INFO L93 Difference]: Finished difference Result 1194 states and 1401 transitions. [2021-11-06 10:30:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-06 10:30:08,263 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 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 10:30:08,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:08,266 INFO L225 Difference]: With dead ends: 1194 [2021-11-06 10:30:08,266 INFO L226 Difference]: Without dead ends: 986 [2021-11-06 10:30:08,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2021-11-06 10:30:08,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-06 10:30:08,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 435. [2021-11-06 10:30:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 416 states have (on average 1.2475961538461537) internal successors, (519), 434 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 10:30:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 519 transitions. [2021-11-06 10:30:08,280 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 519 transitions. Word has length 100 [2021-11-06 10:30:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:08,281 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 519 transitions. [2021-11-06 10:30:08,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 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 10:30:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 519 transitions. [2021-11-06 10:30:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 10:30:08,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:08,282 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] [2021-11-06 10:30:08,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 10:30:08,282 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 10:30:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -413009691, now seen corresponding path program 1 times [2021-11-06 10:30:08,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:08,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914481558] [2021-11-06 10:30:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:08,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:10,132 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 10:30:10,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:10,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914481558] [2021-11-06 10:30:10,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914481558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:10,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:10,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:30:10,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383415188] [2021-11-06 10:30:10,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:30:10,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:30:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:30:10,133 INFO L87 Difference]: Start difference. First operand 435 states and 519 transitions. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:32,112 INFO L93 Difference]: Finished difference Result 1019 states and 1193 transitions. [2021-11-06 10:30:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:30:32,112 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-06 10:30:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:32,114 INFO L225 Difference]: With dead ends: 1019 [2021-11-06 10:30:32,115 INFO L226 Difference]: Without dead ends: 771 [2021-11-06 10:30:32,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:30:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-06 10:30:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 433. [2021-11-06 10:30:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 414 states have (on average 1.2439613526570048) internal successors, (515), 432 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 10:30:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 515 transitions. [2021-11-06 10:30:32,128 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 515 transitions. Word has length 103 [2021-11-06 10:30:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:32,128 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 515 transitions. [2021-11-06 10:30:32,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 515 transitions. [2021-11-06 10:30:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 10:30:32,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:32,129 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] [2021-11-06 10:30:32,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 10:30:32,130 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 10:30:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:32,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1402762431, now seen corresponding path program 1 times [2021-11-06 10:30:32,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:32,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144966673] [2021-11-06 10:30:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:32,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:33,082 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 10:30:33,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:33,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144966673] [2021-11-06 10:30:33,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144966673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:33,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:33,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:30:33,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325708013] [2021-11-06 10:30:33,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:30:33,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:33,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:30:33,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:30:33,084 INFO L87 Difference]: Start difference. First operand 433 states and 515 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 10:30:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:47,156 INFO L93 Difference]: Finished difference Result 1396 states and 1655 transitions. [2021-11-06 10:30:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 10:30:47,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 10:30:47,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:47,160 INFO L225 Difference]: With dead ends: 1396 [2021-11-06 10:30:47,160 INFO L226 Difference]: Without dead ends: 1179 [2021-11-06 10:30:47,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:30:47,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-06 10:30:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 544. [2021-11-06 10:30:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 525 states have (on average 1.2419047619047618) internal successors, (652), 543 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 10:30:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 652 transitions. [2021-11-06 10:30:47,176 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 652 transitions. Word has length 104 [2021-11-06 10:30:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:47,177 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 652 transitions. [2021-11-06 10:30:47,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 10:30:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 652 transitions. [2021-11-06 10:30:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 10:30:47,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:47,178 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 10:30:47,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 10:30:47,178 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 10:30:47,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:47,179 INFO L85 PathProgramCache]: Analyzing trace with hash 893289341, now seen corresponding path program 1 times [2021-11-06 10:30:47,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:47,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189612205] [2021-11-06 10:30:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:47,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:47,909 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 10:30:47,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:47,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189612205] [2021-11-06 10:30:47,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189612205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:47,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:47,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:30:47,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394319124] [2021-11-06 10:30:47,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:30:47,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:47,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:30:47,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:30:47,911 INFO L87 Difference]: Start difference. First operand 544 states and 652 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 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 10:30:51,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:51,326 INFO L93 Difference]: Finished difference Result 1314 states and 1566 transitions. [2021-11-06 10:30:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:30:51,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 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 10:30:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:51,329 INFO L225 Difference]: With dead ends: 1314 [2021-11-06 10:30:51,330 INFO L226 Difference]: Without dead ends: 797 [2021-11-06 10:30:51,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 10:30:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-11-06 10:30:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 544. [2021-11-06 10:30:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 525 states have (on average 1.2133333333333334) internal successors, (637), 543 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 10:30:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 637 transitions. [2021-11-06 10:30:51,348 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 637 transitions. Word has length 104 [2021-11-06 10:30:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:51,348 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 637 transitions. [2021-11-06 10:30:51,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 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 10:30:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 637 transitions. [2021-11-06 10:30:51,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 10:30:51,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:51,350 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 10:30:51,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 10:30:51,350 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 10:30:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash 965675899, now seen corresponding path program 1 times [2021-11-06 10:30:51,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:51,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83838670] [2021-11-06 10:30:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:51,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:52,435 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 10:30:52,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:52,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83838670] [2021-11-06 10:30:52,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83838670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:52,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:52,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:30:52,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846122516] [2021-11-06 10:30:52,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:30:52,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:30:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:30:52,437 INFO L87 Difference]: Start difference. First operand 544 states and 637 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 10:30:53,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:53,672 INFO L93 Difference]: Finished difference Result 1225 states and 1411 transitions. [2021-11-06 10:30:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:30:53,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 10:30:53,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:53,675 INFO L225 Difference]: With dead ends: 1225 [2021-11-06 10:30:53,675 INFO L226 Difference]: Without dead ends: 652 [2021-11-06 10:30:53,676 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 10:30:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-06 10:30:53,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 542. [2021-11-06 10:30:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 523 states have (on average 1.1892925430210326) internal successors, (622), 541 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 10:30:53,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 622 transitions. [2021-11-06 10:30:53,689 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 622 transitions. Word has length 104 [2021-11-06 10:30:53,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:53,690 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 622 transitions. [2021-11-06 10:30:53,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 10:30:53,690 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 622 transitions. [2021-11-06 10:30:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 10:30:53,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:53,691 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] [2021-11-06 10:30:53,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 10:30:53,691 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 10:30:53,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:53,693 INFO L85 PathProgramCache]: Analyzing trace with hash -666063228, now seen corresponding path program 1 times [2021-11-06 10:30:53,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:53,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044317786] [2021-11-06 10:30:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:53,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:55,511 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 10:30:55,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:55,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044317786] [2021-11-06 10:30:55,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044317786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:55,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:55,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:30:55,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880512928] [2021-11-06 10:30:55,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:30:55,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:30:55,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:30:55,513 INFO L87 Difference]: Start difference. First operand 542 states and 622 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 10:31:13,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:13,643 INFO L93 Difference]: Finished difference Result 1423 states and 1607 transitions. [2021-11-06 10:31:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-06 10:31:13,644 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 10:31:13,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:13,647 INFO L225 Difference]: With dead ends: 1423 [2021-11-06 10:31:13,647 INFO L226 Difference]: Without dead ends: 1205 [2021-11-06 10:31:13,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-11-06 10:31:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2021-11-06 10:31:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 564. [2021-11-06 10:31:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 545 states have (on average 1.1853211009174311) internal successors, (646), 563 states have internal predecessors, (646), 0 states have call successors, (0), 0 states 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 10:31:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 646 transitions. [2021-11-06 10:31:13,661 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 646 transitions. Word has length 106 [2021-11-06 10:31:13,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:13,661 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 646 transitions. [2021-11-06 10:31:13,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 10:31:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 646 transitions. [2021-11-06 10:31:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 10:31:13,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:13,662 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] [2021-11-06 10:31:13,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 10:31:13,663 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 10:31:13,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1257164806, now seen corresponding path program 1 times [2021-11-06 10:31:13,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:13,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585652607] [2021-11-06 10:31:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:13,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:31:15,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:15,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585652607] [2021-11-06 10:31:15,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585652607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:15,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:15,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:31:15,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184947578] [2021-11-06 10:31:15,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:31:15,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:31:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:31:15,809 INFO L87 Difference]: Start difference. First operand 564 states and 646 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 10:31:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:41,681 INFO L93 Difference]: Finished difference Result 993 states and 1131 transitions. [2021-11-06 10:31:41,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:31:41,682 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 10:31:41,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:41,684 INFO L225 Difference]: With dead ends: 993 [2021-11-06 10:31:41,684 INFO L226 Difference]: Without dead ends: 783 [2021-11-06 10:31:41,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-11-06 10:31:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-06 10:31:41,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 560. [2021-11-06 10:31:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 541 states have (on average 1.1848428835489833) internal successors, (641), 559 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 10:31:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 641 transitions. [2021-11-06 10:31:41,716 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 641 transitions. Word has length 106 [2021-11-06 10:31:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:41,716 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 641 transitions. [2021-11-06 10:31:41,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 10:31:41,716 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 641 transitions. [2021-11-06 10:31:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 10:31:41,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:41,717 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] [2021-11-06 10:31:41,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 10:31:41,718 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 10:31:41,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:41,718 INFO L85 PathProgramCache]: Analyzing trace with hash -805910600, now seen corresponding path program 1 times [2021-11-06 10:31:41,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:41,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137445133] [2021-11-06 10:31:41,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:41,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:41,876 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 10:31:41,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:41,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137445133] [2021-11-06 10:31:41,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137445133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:41,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:41,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:31:41,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11532363] [2021-11-06 10:31:41,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:31:41,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:41,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:31:41,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:31:41,877 INFO L87 Difference]: Start difference. First operand 560 states and 641 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 10:31:42,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:42,279 INFO L93 Difference]: Finished difference Result 1141 states and 1301 transitions. [2021-11-06 10:31:42,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:31:42,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-06 10:31:42,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:42,281 INFO L225 Difference]: With dead ends: 1141 [2021-11-06 10:31:42,281 INFO L226 Difference]: Without dead ends: 540 [2021-11-06 10:31:42,281 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 10:31:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-06 10:31:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 514. [2021-11-06 10:31:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 495 states have (on average 1.1555555555555554) internal successors, (572), 513 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:42,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 572 transitions. [2021-11-06 10:31:42,294 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 572 transitions. Word has length 109 [2021-11-06 10:31:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:42,295 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 572 transitions. [2021-11-06 10:31:42,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 10:31:42,295 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 572 transitions. [2021-11-06 10:31:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 10:31:42,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:42,296 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] [2021-11-06 10:31:42,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 10:31:42,296 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:31:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:42,297 INFO L85 PathProgramCache]: Analyzing trace with hash 698715380, now seen corresponding path program 1 times [2021-11-06 10:31:42,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:42,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007105248] [2021-11-06 10:31:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:42,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:43,997 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 10:31:43,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:43,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007105248] [2021-11-06 10:31:43,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007105248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:43,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:43,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:31:43,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449263404] [2021-11-06 10:31:43,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:31:43,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:43,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:31:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:31:43,999 INFO L87 Difference]: Start difference. First operand 514 states and 572 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 10:32:01,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:01,242 INFO L93 Difference]: Finished difference Result 1203 states and 1337 transitions. [2021-11-06 10:32:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 10:32:01,243 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-06 10:32:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:01,245 INFO L225 Difference]: With dead ends: 1203 [2021-11-06 10:32:01,245 INFO L226 Difference]: Without dead ends: 865 [2021-11-06 10:32:01,246 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=228, Invalid=474, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:32:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-11-06 10:32:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 522. [2021-11-06 10:32:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 503 states have (on average 1.1550695825049702) internal successors, (581), 521 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 10:32:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 581 transitions. [2021-11-06 10:32:01,267 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 581 transitions. Word has length 109 [2021-11-06 10:32:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:01,267 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 581 transitions. [2021-11-06 10:32:01,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 10:32:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 581 transitions. [2021-11-06 10:32:01,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 10:32:01,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:01,269 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] [2021-11-06 10:32:01,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 10:32:01,269 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 10:32:01,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:01,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1685058258, now seen corresponding path program 1 times [2021-11-06 10:32:01,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:01,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747231586] [2021-11-06 10:32:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:01,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:04,027 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 10:32:04,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:04,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747231586] [2021-11-06 10:32:04,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747231586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:04,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:04,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:32:04,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649763089] [2021-11-06 10:32:04,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:32:04,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:32:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:32:04,029 INFO L87 Difference]: Start difference. First operand 522 states and 581 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 10:32:09,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:09,779 INFO L93 Difference]: Finished difference Result 1049 states and 1164 transitions. [2021-11-06 10:32:09,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:32:09,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-06 10:32:09,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:09,781 INFO L225 Difference]: With dead ends: 1049 [2021-11-06 10:32:09,781 INFO L226 Difference]: Without dead ends: 552 [2021-11-06 10:32:09,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:32:09,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-06 10:32:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 518. [2021-11-06 10:32:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 499 states have (on average 1.154308617234469) internal successors, (576), 517 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 10:32:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 576 transitions. [2021-11-06 10:32:09,808 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 576 transitions. Word has length 110 [2021-11-06 10:32:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:09,809 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 576 transitions. [2021-11-06 10:32:09,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 10:32:09,809 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 576 transitions. [2021-11-06 10:32:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 10:32:09,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:09,810 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 10:32:09,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 10:32:09,810 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 10:32:09,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:09,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1804561311, now seen corresponding path program 1 times [2021-11-06 10:32:09,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:09,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422888774] [2021-11-06 10:32:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:09,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:13,432 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 10:32:13,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:13,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422888774] [2021-11-06 10:32:13,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422888774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:13,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:13,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:32:13,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413114772] [2021-11-06 10:32:13,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:32:13,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:32:13,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:32:13,433 INFO L87 Difference]: Start difference. First operand 518 states and 576 transitions. Second operand has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 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 10:32:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:23,973 INFO L93 Difference]: Finished difference Result 921 states and 1020 transitions. [2021-11-06 10:32:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 10:32:23,974 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 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 10:32:23,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:23,976 INFO L225 Difference]: With dead ends: 921 [2021-11-06 10:32:23,976 INFO L226 Difference]: Without dead ends: 683 [2021-11-06 10:32:23,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2021-11-06 10:32:23,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-11-06 10:32:23,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 523. [2021-11-06 10:32:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 504 states have (on average 1.1547619047619047) internal successors, (582), 522 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 10:32:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 582 transitions. [2021-11-06 10:32:23,988 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 582 transitions. Word has length 116 [2021-11-06 10:32:23,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:23,989 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 582 transitions. [2021-11-06 10:32:23,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 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 10:32:23,989 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 582 transitions. [2021-11-06 10:32:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 10:32:23,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:23,990 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] [2021-11-06 10:32:23,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 10:32:23,990 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:32:23,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash 361163720, now seen corresponding path program 1 times [2021-11-06 10:32:23,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:23,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927230884] [2021-11-06 10:32:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:23,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:25,390 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 10:32:25,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:25,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927230884] [2021-11-06 10:32:25,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927230884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:25,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:25,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:32:25,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578452305] [2021-11-06 10:32:25,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:32:25,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:25,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:32:25,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:32:25,393 INFO L87 Difference]: Start difference. First operand 523 states and 582 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:43,660 INFO L93 Difference]: Finished difference Result 1372 states and 1519 transitions. [2021-11-06 10:32:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-06 10:32:43,663 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-06 10:32:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:43,665 INFO L225 Difference]: With dead ends: 1372 [2021-11-06 10:32:43,665 INFO L226 Difference]: Without dead ends: 1156 [2021-11-06 10:32:43,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=261, Invalid=929, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 10:32:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-06 10:32:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 532. [2021-11-06 10:32:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 513 states have (on average 1.1539961013645224) internal successors, (592), 531 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 10:32:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 592 transitions. [2021-11-06 10:32:43,681 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 592 transitions. Word has length 118 [2021-11-06 10:32:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:43,681 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 592 transitions. [2021-11-06 10:32:43,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 592 transitions. [2021-11-06 10:32:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 10:32:43,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:43,682 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] [2021-11-06 10:32:43,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 10:32:43,683 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 10:32:43,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:43,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1747949130, now seen corresponding path program 1 times [2021-11-06 10:32:43,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:43,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528746483] [2021-11-06 10:32:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:43,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:46,255 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 10:32:46,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:46,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528746483] [2021-11-06 10:32:46,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528746483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:46,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:46,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-06 10:32:46,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704978219] [2021-11-06 10:32:46,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-06 10:32:46,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:46,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-06 10:32:46,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:32:46,257 INFO L87 Difference]: Start difference. First operand 532 states and 592 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:33:17,741 INFO L93 Difference]: Finished difference Result 1698 states and 1890 transitions. [2021-11-06 10:33:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 10:33:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-06 10:33:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:33:17,745 INFO L225 Difference]: With dead ends: 1698 [2021-11-06 10:33:17,745 INFO L226 Difference]: Without dead ends: 1242 [2021-11-06 10:33:17,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=280, Invalid=1280, Unknown=0, NotChecked=0, Total=1560 [2021-11-06 10:33:17,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-06 10:33:17,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 593. [2021-11-06 10:33:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 574 states have (on average 1.146341463414634) internal successors, (658), 592 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 10:33:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 658 transitions. [2021-11-06 10:33:17,760 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 658 transitions. Word has length 118 [2021-11-06 10:33:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:33:17,760 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 658 transitions. [2021-11-06 10:33:17,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 658 transitions. [2021-11-06 10:33:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 10:33:17,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:33:17,761 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] [2021-11-06 10:33:17,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 10:33:17,761 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 10:33:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:33:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash -945947060, now seen corresponding path program 1 times [2021-11-06 10:33:17,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:33:17,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765638486] [2021-11-06 10:33:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:33:17,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:33:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:33:22,152 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 10:33:22,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:33:22,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765638486] [2021-11-06 10:33:22,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765638486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:33:22,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:33:22,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-06 10:33:22,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047837586] [2021-11-06 10:33:22,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 10:33:22,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:33:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 10:33:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:33:22,154 INFO L87 Difference]: Start difference. First operand 593 states and 658 transitions. Second operand has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:04,548 INFO L93 Difference]: Finished difference Result 1214 states and 1337 transitions. [2021-11-06 10:34:04,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-06 10:34:04,549 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-06 10:34:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:04,551 INFO L225 Difference]: With dead ends: 1214 [2021-11-06 10:34:04,551 INFO L226 Difference]: Without dead ends: 935 [2021-11-06 10:34:04,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=718, Invalid=3064, Unknown=0, NotChecked=0, Total=3782 [2021-11-06 10:34:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-06 10:34:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 639. [2021-11-06 10:34:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 620 states have (on average 1.1403225806451613) internal successors, (707), 638 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 10:34:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 707 transitions. [2021-11-06 10:34:04,589 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 707 transitions. Word has length 118 [2021-11-06 10:34:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:04,589 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 707 transitions. [2021-11-06 10:34:04,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 707 transitions. [2021-11-06 10:34:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 10:34:04,590 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:04,590 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] [2021-11-06 10:34:04,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 10:34:04,591 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 10:34:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:04,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1030993729, now seen corresponding path program 1 times [2021-11-06 10:34:04,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:04,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016756473] [2021-11-06 10:34:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:04,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:05,561 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 10:34:05,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:05,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016756473] [2021-11-06 10:34:05,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016756473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:05,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:05,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:34:05,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597681591] [2021-11-06 10:34:05,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:34:05,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:05,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:34:05,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:34:05,563 INFO L87 Difference]: Start difference. First operand 639 states and 707 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:13,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:13,799 INFO L93 Difference]: Finished difference Result 1023 states and 1134 transitions. [2021-11-06 10:34:13,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:34:13,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-06 10:34:13,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:13,801 INFO L225 Difference]: With dead ends: 1023 [2021-11-06 10:34:13,801 INFO L226 Difference]: Without dead ends: 870 [2021-11-06 10:34:13,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:34:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-11-06 10:34:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 663. [2021-11-06 10:34:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 644 states have (on average 1.1444099378881987) internal successors, (737), 662 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 10:34:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 737 transitions. [2021-11-06 10:34:13,825 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 737 transitions. Word has length 118 [2021-11-06 10:34:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:13,825 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 737 transitions. [2021-11-06 10:34:13,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 737 transitions. [2021-11-06 10:34:13,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 10:34:13,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:13,832 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] [2021-11-06 10:34:13,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 10:34:13,832 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 10:34:13,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash 772828291, now seen corresponding path program 1 times [2021-11-06 10:34:13,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:13,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746831972] [2021-11-06 10:34:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:13,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:15,262 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 10:34:15,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:15,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746831972] [2021-11-06 10:34:15,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746831972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:15,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:15,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:34:15,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184497773] [2021-11-06 10:34:15,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:34:15,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:15,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:34:15,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:34:15,264 INFO L87 Difference]: Start difference. First operand 663 states and 737 transitions. Second operand has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:31,097 INFO L93 Difference]: Finished difference Result 1574 states and 1756 transitions. [2021-11-06 10:34:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:34:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-06 10:34:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:31,100 INFO L225 Difference]: With dead ends: 1574 [2021-11-06 10:34:31,100 INFO L226 Difference]: Without dead ends: 1212 [2021-11-06 10:34:31,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-11-06 10:34:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-11-06 10:34:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 668. [2021-11-06 10:34:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 649 states have (on average 1.1432973805855162) internal successors, (742), 667 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 10:34:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 742 transitions. [2021-11-06 10:34:31,120 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 742 transitions. Word has length 118 [2021-11-06 10:34:31,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:31,121 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 742 transitions. [2021-11-06 10:34:31,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:31,121 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 742 transitions. [2021-11-06 10:34:31,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 10:34:31,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:31,122 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] [2021-11-06 10:34:31,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 10:34:31,122 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:34:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash 25635969, now seen corresponding path program 1 times [2021-11-06 10:34:31,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:31,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440581327] [2021-11-06 10:34:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:31,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:33,935 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 10:34:33,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:33,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440581327] [2021-11-06 10:34:33,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440581327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:33,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:33,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-06 10:34:33,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711438904] [2021-11-06 10:34:33,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 10:34:33,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:33,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 10:34:33,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:34:33,939 INFO L87 Difference]: Start difference. First operand 668 states and 742 transitions. Second operand has 22 states, 22 states have (on average 5.409090909090909) internal successors, (119), 22 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 10:35:07,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:07,210 INFO L93 Difference]: Finished difference Result 1887 states and 2093 transitions. [2021-11-06 10:35:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-06 10:35:07,211 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.409090909090909) internal successors, (119), 22 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-06 10:35:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:07,215 INFO L225 Difference]: With dead ends: 1887 [2021-11-06 10:35:07,215 INFO L226 Difference]: Without dead ends: 1713 [2021-11-06 10:35:07,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2107 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1039, Invalid=5603, Unknown=0, NotChecked=0, Total=6642 [2021-11-06 10:35:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-11-06 10:35:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 759. [2021-11-06 10:35:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 740 states have (on average 1.1445945945945946) internal successors, (847), 758 states have internal predecessors, (847), 0 states have call successors, (0), 0 states 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 10:35:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 847 transitions. [2021-11-06 10:35:07,239 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 847 transitions. Word has length 119 [2021-11-06 10:35:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:07,239 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 847 transitions. [2021-11-06 10:35:07,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.409090909090909) internal successors, (119), 22 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 10:35:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 847 transitions. [2021-11-06 10:35:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 10:35:07,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:07,240 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] [2021-11-06 10:35:07,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 10:35:07,241 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:35:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:07,242 INFO L85 PathProgramCache]: Analyzing trace with hash 283801407, now seen corresponding path program 1 times [2021-11-06 10:35:07,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:07,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260440713] [2021-11-06 10:35:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:07,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:09,417 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 10:35:09,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:09,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260440713] [2021-11-06 10:35:09,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260440713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:09,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:09,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:35:09,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285732018] [2021-11-06 10:35:09,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:35:09,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:09,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:35:09,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:35:09,419 INFO L87 Difference]: Start difference. First operand 759 states and 847 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 10:35:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:36,943 INFO L93 Difference]: Finished difference Result 1457 states and 1617 transitions. [2021-11-06 10:35:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-06 10:35:36,944 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-06 10:35:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:36,947 INFO L225 Difference]: With dead ends: 1457 [2021-11-06 10:35:36,947 INFO L226 Difference]: Without dead ends: 1300 [2021-11-06 10:35:36,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=413, Invalid=1749, Unknown=0, NotChecked=0, Total=2162 [2021-11-06 10:35:36,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-11-06 10:35:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 821. [2021-11-06 10:35:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 802 states have (on average 1.139650872817955) internal successors, (914), 820 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 10:35:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 914 transitions. [2021-11-06 10:35:36,980 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 914 transitions. Word has length 119 [2021-11-06 10:35:36,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:36,980 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 914 transitions. [2021-11-06 10:35:36,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 10:35:36,981 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 914 transitions. [2021-11-06 10:35:36,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 10:35:36,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:36,982 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] [2021-11-06 10:35:36,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 10:35:36,983 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:35:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:36,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1407374213, now seen corresponding path program 1 times [2021-11-06 10:35:36,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:36,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276003997] [2021-11-06 10:35:36,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:36,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:35:39,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:39,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276003997] [2021-11-06 10:35:39,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276003997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:39,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:39,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:35:39,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513235473] [2021-11-06 10:35:39,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:35:39,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:35:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:35:39,181 INFO L87 Difference]: Start difference. First operand 821 states and 914 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 10:36:03,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:03,958 INFO L93 Difference]: Finished difference Result 1905 states and 2114 transitions. [2021-11-06 10:36:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-06 10:36:03,958 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-06 10:36:03,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:03,962 INFO L225 Difference]: With dead ends: 1905 [2021-11-06 10:36:03,962 INFO L226 Difference]: Without dead ends: 1749 [2021-11-06 10:36:03,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=582, Invalid=2070, Unknown=0, NotChecked=0, Total=2652 [2021-11-06 10:36:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2021-11-06 10:36:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 833. [2021-11-06 10:36:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 814 states have (on average 1.135135135135135) internal successors, (924), 832 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 10:36:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 924 transitions. [2021-11-06 10:36:03,995 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 924 transitions. Word has length 119 [2021-11-06 10:36:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:03,995 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 924 transitions. [2021-11-06 10:36:03,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 10:36:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 924 transitions. [2021-11-06 10:36:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 10:36:03,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:03,996 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] [2021-11-06 10:36:03,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 10:36:03,997 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 10:36:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1440444554, now seen corresponding path program 1 times [2021-11-06 10:36:03,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:03,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64249611] [2021-11-06 10:36:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:03,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:05,913 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 10:36:05,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:05,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64249611] [2021-11-06 10:36:05,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64249611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:05,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:05,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:36:05,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323678553] [2021-11-06 10:36:05,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:36:05,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:05,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:36:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:36:05,915 INFO L87 Difference]: Start difference. First operand 833 states and 924 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:36:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:16,888 INFO L93 Difference]: Finished difference Result 1616 states and 1798 transitions. [2021-11-06 10:36:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:36:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-06 10:36:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:16,892 INFO L225 Difference]: With dead ends: 1616 [2021-11-06 10:36:16,892 INFO L226 Difference]: Without dead ends: 1235 [2021-11-06 10:36:16,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:36:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2021-11-06 10:36:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 843. [2021-11-06 10:36:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 824 states have (on average 1.1347087378640777) internal successors, (935), 842 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 10:36:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 935 transitions. [2021-11-06 10:36:16,926 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 935 transitions. Word has length 121 [2021-11-06 10:36:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:16,927 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 935 transitions. [2021-11-06 10:36:16,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:36:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 935 transitions. [2021-11-06 10:36:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 10:36:16,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:16,934 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] [2021-11-06 10:36:16,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 10:36:16,934 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 10:36:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash 943480184, now seen corresponding path program 1 times [2021-11-06 10:36:16,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:16,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750847928] [2021-11-06 10:36:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:16,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:18,440 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 10:36:18,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:18,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750847928] [2021-11-06 10:36:18,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750847928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:18,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:18,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:36:18,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994686336] [2021-11-06 10:36:18,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:36:18,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:36:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:36:18,442 INFO L87 Difference]: Start difference. First operand 843 states and 935 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:36:32,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:32,055 INFO L93 Difference]: Finished difference Result 1740 states and 1928 transitions. [2021-11-06 10:36:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-06 10:36:32,056 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-06 10:36:32,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:32,059 INFO L225 Difference]: With dead ends: 1740 [2021-11-06 10:36:32,060 INFO L226 Difference]: Without dead ends: 1581 [2021-11-06 10:36:32,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 10:36:32,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-11-06 10:36:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 933. [2021-11-06 10:36:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 914 states have (on average 1.135667396061269) internal successors, (1038), 932 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 10:36:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1038 transitions. [2021-11-06 10:36:32,095 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1038 transitions. Word has length 121 [2021-11-06 10:36:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:32,095 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1038 transitions. [2021-11-06 10:36:32,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:36:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1038 transitions. [2021-11-06 10:36:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 10:36:32,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:32,096 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] [2021-11-06 10:36:32,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 10:36:32,097 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 10:36:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:32,097 INFO L85 PathProgramCache]: Analyzing trace with hash -644867718, now seen corresponding path program 1 times [2021-11-06 10:36:32,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:32,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926834757] [2021-11-06 10:36:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:32,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:33,543 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 10:36:33,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:33,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926834757] [2021-11-06 10:36:33,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926834757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:33,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:33,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:36:33,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049003194] [2021-11-06 10:36:33,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:36:33,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:36:33,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:36:33,545 INFO L87 Difference]: Start difference. First operand 933 states and 1038 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:36:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:47,989 INFO L93 Difference]: Finished difference Result 1635 states and 1819 transitions. [2021-11-06 10:36:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:36:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-06 10:36:47,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:47,993 INFO L225 Difference]: With dead ends: 1635 [2021-11-06 10:36:47,993 INFO L226 Difference]: Without dead ends: 1406 [2021-11-06 10:36:47,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-11-06 10:36:47,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2021-11-06 10:36:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 918. [2021-11-06 10:36:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 899 states have (on average 1.135706340378198) internal successors, (1021), 917 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 10:36:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1021 transitions. [2021-11-06 10:36:48,071 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1021 transitions. Word has length 121 [2021-11-06 10:36:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:48,071 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 1021 transitions. [2021-11-06 10:36:48,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:36:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1021 transitions. [2021-11-06 10:36:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 10:36:48,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:48,072 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] [2021-11-06 10:36:48,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 10:36:48,073 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 10:36:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:48,073 INFO L85 PathProgramCache]: Analyzing trace with hash -85879114, now seen corresponding path program 1 times [2021-11-06 10:36:48,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:48,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669087846] [2021-11-06 10:36:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:48,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:54,787 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 10:36:54,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:54,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669087846] [2021-11-06 10:36:54,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669087846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:54,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:54,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:36:54,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318565647] [2021-11-06 10:36:54,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:36:54,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:54,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:36:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:36:54,789 INFO L87 Difference]: Start difference. First operand 918 states and 1021 transitions. Second operand has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:37:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:12,027 INFO L93 Difference]: Finished difference Result 1302 states and 1443 transitions. [2021-11-06 10:37:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-06 10:37:12,028 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-06 10:37:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:12,030 INFO L225 Difference]: With dead ends: 1302 [2021-11-06 10:37:12,030 INFO L226 Difference]: Without dead ends: 841 [2021-11-06 10:37:12,031 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 10:37:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-11-06 10:37:12,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 810. [2021-11-06 10:37:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 791 states have (on average 1.1327433628318584) internal successors, (896), 809 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 10:37:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 896 transitions. [2021-11-06 10:37:12,063 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 896 transitions. Word has length 121 [2021-11-06 10:37:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:12,064 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 896 transitions. [2021-11-06 10:37:12,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:37:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 896 transitions. [2021-11-06 10:37:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 10:37:12,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:12,065 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] [2021-11-06 10:37:12,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-06 10:37:12,066 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 10:37:12,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1597679276, now seen corresponding path program 1 times [2021-11-06 10:37:12,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:12,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873372475] [2021-11-06 10:37:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:12,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:17,533 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 10:37:17,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:17,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873372475] [2021-11-06 10:37:17,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873372475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:17,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:17,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:37:17,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195361541] [2021-11-06 10:37:17,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:37:17,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:37:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:37:17,535 INFO L87 Difference]: Start difference. First operand 810 states and 896 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:37:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:29,638 INFO L93 Difference]: Finished difference Result 1218 states and 1351 transitions. [2021-11-06 10:37:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:37:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-06 10:37:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:29,640 INFO L225 Difference]: With dead ends: 1218 [2021-11-06 10:37:29,641 INFO L226 Difference]: Without dead ends: 816 [2021-11-06 10:37:29,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:37:29,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-11-06 10:37:29,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 633. [2021-11-06 10:37:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 614 states have (on average 1.1400651465798046) internal successors, (700), 632 states have internal predecessors, (700), 0 states have call successors, (0), 0 states 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 10:37:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 700 transitions. [2021-11-06 10:37:29,664 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 700 transitions. Word has length 121 [2021-11-06 10:37:29,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:29,665 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 700 transitions. [2021-11-06 10:37:29,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 10:37:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 700 transitions. [2021-11-06 10:37:29,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 10:37:29,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:29,666 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] [2021-11-06 10:37:29,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-06 10:37:29,666 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 10:37:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1873322857, now seen corresponding path program 1 times [2021-11-06 10:37:29,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:29,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737403422] [2021-11-06 10:37:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:29,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:31,226 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 10:37:31,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:31,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737403422] [2021-11-06 10:37:31,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737403422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:31,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:31,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:37:31,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683969589] [2021-11-06 10:37:31,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:37:31,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:37:31,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:37:31,227 INFO L87 Difference]: Start difference. First operand 633 states and 700 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:45,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:45,351 INFO L93 Difference]: Finished difference Result 1524 states and 1692 transitions. [2021-11-06 10:37:45,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 10:37:45,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-06 10:37:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:45,354 INFO L225 Difference]: With dead ends: 1524 [2021-11-06 10:37:45,354 INFO L226 Difference]: Without dead ends: 1291 [2021-11-06 10:37:45,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-11-06 10:37:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-06 10:37:45,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 684. [2021-11-06 10:37:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 665 states have (on average 1.1353383458646618) internal successors, (755), 683 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 10:37:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 755 transitions. [2021-11-06 10:37:45,382 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 755 transitions. Word has length 124 [2021-11-06 10:37:45,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:45,382 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 755 transitions. [2021-11-06 10:37:45,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:45,383 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 755 transitions. [2021-11-06 10:37:45,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 10:37:45,383 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:45,383 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] [2021-11-06 10:37:45,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-06 10:37:45,384 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 10:37:45,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash 372256597, now seen corresponding path program 1 times [2021-11-06 10:37:45,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:45,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402282050] [2021-11-06 10:37:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:45,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:37:47,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:47,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402282050] [2021-11-06 10:37:47,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402282050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:47,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:47,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:37:47,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458508539] [2021-11-06 10:37:47,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:37:47,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:37:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:37:47,119 INFO L87 Difference]: Start difference. First operand 684 states and 755 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:56,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:56,035 INFO L93 Difference]: Finished difference Result 1103 states and 1222 transitions. [2021-11-06 10:37:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:37:56,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-06 10:37:56,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:56,038 INFO L225 Difference]: With dead ends: 1103 [2021-11-06 10:37:56,038 INFO L226 Difference]: Without dead ends: 787 [2021-11-06 10:37:56,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:37:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-11-06 10:37:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 667. [2021-11-06 10:37:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 648 states have (on average 1.1311728395061729) internal successors, (733), 666 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 10:37:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 733 transitions. [2021-11-06 10:37:56,066 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 733 transitions. Word has length 124 [2021-11-06 10:37:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:56,067 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 733 transitions. [2021-11-06 10:37:56,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 733 transitions. [2021-11-06 10:37:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 10:37:56,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:56,068 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] [2021-11-06 10:37:56,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 10:37:56,068 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 10:37:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash 88251801, now seen corresponding path program 1 times [2021-11-06 10:37:56,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:56,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152211162] [2021-11-06 10:37:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:56,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:59,901 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 10:37:59,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:59,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152211162] [2021-11-06 10:37:59,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152211162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:59,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:59,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-06 10:37:59,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469760417] [2021-11-06 10:37:59,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 10:37:59,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:59,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 10:37:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:37:59,903 INFO L87 Difference]: Start difference. First operand 667 states and 733 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:20,419 INFO L93 Difference]: Finished difference Result 1361 states and 1506 transitions. [2021-11-06 10:38:20,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-06 10:38:20,420 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-06 10:38:20,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:20,422 INFO L225 Difference]: With dead ends: 1361 [2021-11-06 10:38:20,422 INFO L226 Difference]: Without dead ends: 1128 [2021-11-06 10:38:20,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2021-11-06 10:38:20,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-11-06 10:38:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 682. [2021-11-06 10:38:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 663 states have (on average 1.1312217194570136) internal successors, (750), 681 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 750 transitions. [2021-11-06 10:38:20,450 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 750 transitions. Word has length 124 [2021-11-06 10:38:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:20,450 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 750 transitions. [2021-11-06 10:38:20,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 750 transitions. [2021-11-06 10:38:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 10:38:20,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:20,451 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 10:38:20,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-06 10:38:20,452 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 10:38:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash 161314119, now seen corresponding path program 1 times [2021-11-06 10:38:20,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:20,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238779320] [2021-11-06 10:38:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:20,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:24,446 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 10:38:24,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:24,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238779320] [2021-11-06 10:38:24,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238779320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:24,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:24,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:38:24,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9350271] [2021-11-06 10:38:24,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:38:24,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:24,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:38:24,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:38:24,447 INFO L87 Difference]: Start difference. First operand 682 states and 750 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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 10:38:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:31,398 INFO L93 Difference]: Finished difference Result 1038 states and 1144 transitions. [2021-11-06 10:38:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:38:31,399 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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 10:38:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:31,400 INFO L225 Difference]: With dead ends: 1038 [2021-11-06 10:38:31,400 INFO L226 Difference]: Without dead ends: 876 [2021-11-06 10:38:31,401 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:38:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-06 10:38:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 688. [2021-11-06 10:38:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 669 states have (on average 1.1315396113602392) internal successors, (757), 687 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 757 transitions. [2021-11-06 10:38:31,427 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 757 transitions. Word has length 127 [2021-11-06 10:38:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:31,428 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 757 transitions. [2021-11-06 10:38:31,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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 10:38:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 757 transitions. [2021-11-06 10:38:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 10:38:31,429 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:31,429 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 10:38:31,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-06 10:38:31,429 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:38:31,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:31,430 INFO L85 PathProgramCache]: Analyzing trace with hash -337355653, now seen corresponding path program 1 times [2021-11-06 10:38:31,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:31,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874490702] [2021-11-06 10:38:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:31,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:38:35,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:35,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874490702] [2021-11-06 10:38:35,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874490702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:35,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:35,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:38:35,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707229759] [2021-11-06 10:38:35,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:38:35,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:38:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:38:35,505 INFO L87 Difference]: Start difference. First operand 688 states and 757 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 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 10:38:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:41,324 INFO L93 Difference]: Finished difference Result 1226 states and 1341 transitions. [2021-11-06 10:38:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 10:38:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 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 10:38:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:41,326 INFO L225 Difference]: With dead ends: 1226 [2021-11-06 10:38:41,326 INFO L226 Difference]: Without dead ends: 772 [2021-11-06 10:38:41,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:38:41,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-06 10:38:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 669. [2021-11-06 10:38:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 650 states have (on average 1.1307692307692307) internal successors, (735), 668 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 10:38:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 735 transitions. [2021-11-06 10:38:41,351 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 735 transitions. Word has length 127 [2021-11-06 10:38:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:41,351 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 735 transitions. [2021-11-06 10:38:41,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 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 10:38:41,351 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 735 transitions. [2021-11-06 10:38:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 10:38:41,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:41,352 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] [2021-11-06 10:38:41,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-06 10:38:41,353 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:38:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:41,353 INFO L85 PathProgramCache]: Analyzing trace with hash 187195179, now seen corresponding path program 1 times [2021-11-06 10:38:41,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:41,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987441607] [2021-11-06 10:38:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:41,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:41,576 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 10:38:41,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:41,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987441607] [2021-11-06 10:38:41,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987441607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:41,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:41,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:38:41,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810367236] [2021-11-06 10:38:41,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:38:41,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:41,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:38:41,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:38:41,578 INFO L87 Difference]: Start difference. First operand 669 states and 735 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 10:38:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:41,699 INFO L93 Difference]: Finished difference Result 896 states and 987 transitions. [2021-11-06 10:38:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:38:41,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-11-06 10:38:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:41,700 INFO L225 Difference]: With dead ends: 896 [2021-11-06 10:38:41,700 INFO L226 Difference]: Without dead ends: 783 [2021-11-06 10:38:41,701 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 10:38:41,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-06 10:38:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 672. [2021-11-06 10:38:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 653 states have (on average 1.1301684532924963) internal successors, (738), 671 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 10:38:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 738 transitions. [2021-11-06 10:38:41,726 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 738 transitions. Word has length 128 [2021-11-06 10:38:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:41,726 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 738 transitions. [2021-11-06 10:38:41,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 10:38:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 738 transitions. [2021-11-06 10:38:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 10:38:41,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:41,727 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 10:38:41,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-06 10:38:41,727 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:38:41,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1510363894, now seen corresponding path program 1 times [2021-11-06 10:38:41,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:41,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344605370] [2021-11-06 10:38:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:41,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:42,156 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 10:38:42,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:42,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344605370] [2021-11-06 10:38:42,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344605370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:42,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:42,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:38:42,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589936878] [2021-11-06 10:38:42,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:38:42,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:42,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:38:42,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:38:42,159 INFO L87 Difference]: Start difference. First operand 672 states and 738 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 10:38:42,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:42,680 INFO L93 Difference]: Finished difference Result 737 states and 813 transitions. [2021-11-06 10:38:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:38:42,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 10:38:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:42,681 INFO L225 Difference]: With dead ends: 737 [2021-11-06 10:38:42,682 INFO L226 Difference]: Without dead ends: 735 [2021-11-06 10:38:42,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:38:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-06 10:38:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 670. [2021-11-06 10:38:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 652 states have (on average 1.1288343558282208) internal successors, (736), 669 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 10:38:42,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 736 transitions. [2021-11-06 10:38:42,709 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 736 transitions. Word has length 129 [2021-11-06 10:38:42,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:42,709 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 736 transitions. [2021-11-06 10:38:42,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 10:38:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 736 transitions. [2021-11-06 10:38:42,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 10:38:42,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:42,710 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 10:38:42,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-06 10:38:42,710 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 10:38:42,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1212106020, now seen corresponding path program 1 times [2021-11-06 10:38:42,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:42,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891364995] [2021-11-06 10:38:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:42,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:38:43,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:43,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891364995] [2021-11-06 10:38:43,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891364995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:43,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:43,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:38:43,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308987100] [2021-11-06 10:38:43,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:38:43,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:38:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:38:43,230 INFO L87 Difference]: Start difference. First operand 670 states and 736 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 10:38:45,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:45,078 INFO L93 Difference]: Finished difference Result 922 states and 1012 transitions. [2021-11-06 10:38:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:38:45,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 10:38:45,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:45,080 INFO L225 Difference]: With dead ends: 922 [2021-11-06 10:38:45,080 INFO L226 Difference]: Without dead ends: 914 [2021-11-06 10:38:45,081 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 10:38:45,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-06 10:38:45,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 678. [2021-11-06 10:38:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 660 states have (on average 1.1272727272727272) internal successors, (744), 677 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 10:38:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 744 transitions. [2021-11-06 10:38:45,108 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 744 transitions. Word has length 129 [2021-11-06 10:38:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:45,108 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 744 transitions. [2021-11-06 10:38:45,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 10:38:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 744 transitions. [2021-11-06 10:38:45,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 10:38:45,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:45,109 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 10:38:45,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-06 10:38:45,110 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:38:45,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2021452646, now seen corresponding path program 1 times [2021-11-06 10:38:45,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:45,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183903509] [2021-11-06 10:38:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:45,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:46,300 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 10:38:46,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:46,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183903509] [2021-11-06 10:38:46,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183903509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:46,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:46,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:38:46,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336678187] [2021-11-06 10:38:46,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:38:46,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:38:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:38:46,302 INFO L87 Difference]: Start difference. First operand 678 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 10:38:57,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:57,049 INFO L93 Difference]: Finished difference Result 1017 states and 1113 transitions. [2021-11-06 10:38:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:38:57,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 10:38:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:57,051 INFO L225 Difference]: With dead ends: 1017 [2021-11-06 10:38:57,051 INFO L226 Difference]: Without dead ends: 892 [2021-11-06 10:38:57,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:38:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-06 10:38:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 679. [2021-11-06 10:38:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 661 states have (on average 1.1270801815431164) internal successors, (745), 678 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 10:38:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 745 transitions. [2021-11-06 10:38:57,080 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 745 transitions. Word has length 129 [2021-11-06 10:38:57,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:57,080 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 745 transitions. [2021-11-06 10:38:57,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 10:38:57,080 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 745 transitions. [2021-11-06 10:38:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 10:38:57,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:57,081 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 10:38:57,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-06 10:38:57,082 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:38:57,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:57,082 INFO L85 PathProgramCache]: Analyzing trace with hash -239098792, now seen corresponding path program 1 times [2021-11-06 10:38:57,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:57,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791592483] [2021-11-06 10:38:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:57,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:39:02,301 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 10:39:02,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:39:02,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791592483] [2021-11-06 10:39:02,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791592483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:39:02,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:39:02,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-06 10:39:02,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746135145] [2021-11-06 10:39:02,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 10:39:02,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:39:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 10:39:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:39:02,302 INFO L87 Difference]: Start difference. First operand 679 states and 745 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 10:39:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:39:34,179 INFO L93 Difference]: Finished difference Result 1765 states and 1953 transitions. [2021-11-06 10:39:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-06 10:39:34,179 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 10:39:34,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:39:34,182 INFO L225 Difference]: With dead ends: 1765 [2021-11-06 10:39:34,182 INFO L226 Difference]: Without dead ends: 1763 [2021-11-06 10:39:34,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=518, Invalid=2238, Unknown=0, NotChecked=0, Total=2756 [2021-11-06 10:39:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-11-06 10:39:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 909. [2021-11-06 10:39:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 891 states have (on average 1.1346801346801347) internal successors, (1011), 908 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states 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 10:39:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1011 transitions. [2021-11-06 10:39:34,239 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1011 transitions. Word has length 131 [2021-11-06 10:39:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:39:34,240 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1011 transitions. [2021-11-06 10:39:34,240 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 10:39:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1011 transitions. [2021-11-06 10:39:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 10:39:34,241 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:39:34,241 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 10:39:34,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-06 10:39:34,241 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:39:34,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:39:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1924517782, now seen corresponding path program 1 times [2021-11-06 10:39:34,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:39:34,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764023791] [2021-11-06 10:39:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:39:34,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:39:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:39:38,114 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 10:39:38,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:39:38,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764023791] [2021-11-06 10:39:38,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764023791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:39:38,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:39:38,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-06 10:39:38,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656521310] [2021-11-06 10:39:38,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-06 10:39:38,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:39:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-06 10:39:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:39:38,116 INFO L87 Difference]: Start difference. First operand 909 states and 1011 transitions. Second operand has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 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 10:40:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:11,523 INFO L93 Difference]: Finished difference Result 1518 states and 1679 transitions. [2021-11-06 10:40:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-06 10:40:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 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 10:40:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:11,525 INFO L225 Difference]: With dead ends: 1518 [2021-11-06 10:40:11,525 INFO L226 Difference]: Without dead ends: 1239 [2021-11-06 10:40:11,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 10:40:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-06 10:40:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 873. [2021-11-06 10:40:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 855 states have (on average 1.1239766081871345) internal successors, (961), 872 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 10:40:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 961 transitions. [2021-11-06 10:40:11,566 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 961 transitions. Word has length 131 [2021-11-06 10:40:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:11,567 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 961 transitions. [2021-11-06 10:40:11,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 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 10:40:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 961 transitions. [2021-11-06 10:40:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 10:40:11,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:11,568 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] [2021-11-06 10:40:11,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-06 10:40:11,568 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 10:40:11,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:11,569 INFO L85 PathProgramCache]: Analyzing trace with hash 735837078, now seen corresponding path program 1 times [2021-11-06 10:40:11,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:11,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035673698] [2021-11-06 10:40:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:11,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:12,932 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 10:40:12,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:12,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035673698] [2021-11-06 10:40:12,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035673698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:12,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:12,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:40:12,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295351082] [2021-11-06 10:40:12,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:40:12,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:40:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:40:12,934 INFO L87 Difference]: Start difference. First operand 873 states and 961 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:40:19,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:19,974 INFO L93 Difference]: Finished difference Result 1310 states and 1446 transitions. [2021-11-06 10:40:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:40:19,975 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-06 10:40:19,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:19,976 INFO L225 Difference]: With dead ends: 1310 [2021-11-06 10:40:19,976 INFO L226 Difference]: Without dead ends: 1159 [2021-11-06 10:40:19,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:40:19,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-11-06 10:40:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 901. [2021-11-06 10:40:20,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 883 states have (on average 1.1268403171007928) internal successors, (995), 900 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 10:40:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 995 transitions. [2021-11-06 10:40:20,024 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 995 transitions. Word has length 133 [2021-11-06 10:40:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:20,025 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 995 transitions. [2021-11-06 10:40:20,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:40:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 995 transitions. [2021-11-06 10:40:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 10:40:20,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:20,026 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] [2021-11-06 10:40:20,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-06 10:40:20,026 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 10:40:20,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:20,027 INFO L85 PathProgramCache]: Analyzing trace with hash 477671640, now seen corresponding path program 1 times [2021-11-06 10:40:20,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:20,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546660080] [2021-11-06 10:40:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:20,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:25,270 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 10:40:25,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:25,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546660080] [2021-11-06 10:40:25,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546660080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:25,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:25,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:40:25,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427077654] [2021-11-06 10:40:25,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:40:25,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:40:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:40:25,271 INFO L87 Difference]: Start difference. First operand 901 states and 995 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:40:33,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:33,978 INFO L93 Difference]: Finished difference Result 1276 states and 1410 transitions. [2021-11-06 10:40:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:40:33,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-06 10:40:33,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:33,980 INFO L225 Difference]: With dead ends: 1276 [2021-11-06 10:40:33,980 INFO L226 Difference]: Without dead ends: 1065 [2021-11-06 10:40:33,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:40:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-11-06 10:40:34,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 825. [2021-11-06 10:40:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 807 states have (on average 1.1164807930607188) internal successors, (901), 824 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 10:40:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 901 transitions. [2021-11-06 10:40:34,021 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 901 transitions. Word has length 133 [2021-11-06 10:40:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:34,022 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 901 transitions. [2021-11-06 10:40:34,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:40:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 901 transitions. [2021-11-06 10:40:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 10:40:34,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:34,023 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] [2021-11-06 10:40:34,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-06 10:40:34,023 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 10:40:34,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash -955338542, now seen corresponding path program 1 times [2021-11-06 10:40:34,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:34,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845497405] [2021-11-06 10:40:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:34,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:35,036 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 10:40:35,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:35,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845497405] [2021-11-06 10:40:35,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845497405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:35,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:35,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:40:35,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735499824] [2021-11-06 10:40:35,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:40:35,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:40:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:40:35,038 INFO L87 Difference]: Start difference. First operand 825 states and 901 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:40:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:44,105 INFO L93 Difference]: Finished difference Result 1222 states and 1342 transitions. [2021-11-06 10:40:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:40:44,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-06 10:40:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:44,108 INFO L225 Difference]: With dead ends: 1222 [2021-11-06 10:40:44,108 INFO L226 Difference]: Without dead ends: 1085 [2021-11-06 10:40:44,108 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:40:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-11-06 10:40:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 867. [2021-11-06 10:40:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 849 states have (on average 1.1177856301531213) internal successors, (949), 866 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 949 transitions. [2021-11-06 10:40:44,150 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 949 transitions. Word has length 133 [2021-11-06 10:40:44,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:44,150 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 949 transitions. [2021-11-06 10:40:44,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:40:44,151 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 949 transitions. [2021-11-06 10:40:44,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 10:40:44,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:44,152 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] [2021-11-06 10:40:44,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-06 10:40:44,153 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 10:40:44,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:44,153 INFO L85 PathProgramCache]: Analyzing trace with hash 967889492, now seen corresponding path program 1 times [2021-11-06 10:40:44,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:44,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690787774] [2021-11-06 10:40:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:44,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:40:45,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:45,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690787774] [2021-11-06 10:40:45,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690787774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:45,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:45,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:40:45,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418819916] [2021-11-06 10:40:45,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:40:45,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:40:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:40:45,639 INFO L87 Difference]: Start difference. First operand 867 states and 949 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:40:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:51,350 INFO L93 Difference]: Finished difference Result 1448 states and 1586 transitions. [2021-11-06 10:40:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:40:51,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-06 10:40:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:51,352 INFO L225 Difference]: With dead ends: 1448 [2021-11-06 10:40:51,352 INFO L226 Difference]: Without dead ends: 1143 [2021-11-06 10:40:51,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:40:51,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-11-06 10:40:51,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 863. [2021-11-06 10:40:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 845 states have (on average 1.1136094674556214) internal successors, (941), 862 states have internal predecessors, (941), 0 states have call successors, (0), 0 states 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 10:40:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 941 transitions. [2021-11-06 10:40:51,392 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 941 transitions. Word has length 133 [2021-11-06 10:40:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:51,393 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 941 transitions. [2021-11-06 10:40:51,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:40:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 941 transitions. [2021-11-06 10:40:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 10:40:51,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:51,402 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] [2021-11-06 10:40:51,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-06 10:40:51,403 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:40:51,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:51,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2140527014, now seen corresponding path program 1 times [2021-11-06 10:40:51,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:51,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836158080] [2021-11-06 10:40:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:51,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:40:57,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:57,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836158080] [2021-11-06 10:40:57,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836158080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:57,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:57,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-06 10:40:57,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718035875] [2021-11-06 10:40:57,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-06 10:40:57,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-06 10:40:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:40:57,971 INFO L87 Difference]: Start difference. First operand 863 states and 941 transitions. Second operand has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:41:21,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:41:21,969 INFO L93 Difference]: Finished difference Result 1644 states and 1806 transitions. [2021-11-06 10:41:21,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-06 10:41:21,970 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-06 10:41:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:41:21,972 INFO L225 Difference]: With dead ends: 1644 [2021-11-06 10:41:21,972 INFO L226 Difference]: Without dead ends: 1529 [2021-11-06 10:41:21,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=743, Invalid=3163, Unknown=0, NotChecked=0, Total=3906 [2021-11-06 10:41:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-11-06 10:41:22,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 933. [2021-11-06 10:41:22,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 915 states have (on average 1.1147540983606556) internal successors, (1020), 932 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states 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 10:41:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1020 transitions. [2021-11-06 10:41:22,033 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1020 transitions. Word has length 133 [2021-11-06 10:41:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:41:22,033 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1020 transitions. [2021-11-06 10:41:22,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:41:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1020 transitions. [2021-11-06 10:41:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 10:41:22,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:41:22,034 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] [2021-11-06 10:41:22,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-06 10:41:22,035 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 10:41:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:41:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash 683884696, now seen corresponding path program 1 times [2021-11-06 10:41:22,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:41:22,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756643141] [2021-11-06 10:41:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:41:22,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:41:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:41:26,373 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 10:41:26,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:41:26,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756643141] [2021-11-06 10:41:26,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756643141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:41:26,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:41:26,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-06 10:41:26,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948890574] [2021-11-06 10:41:26,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-06 10:41:26,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:41:26,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-06 10:41:26,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:41:26,375 INFO L87 Difference]: Start difference. First operand 933 states and 1020 transitions. Second operand has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:41:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:41:52,794 INFO L93 Difference]: Finished difference Result 1674 states and 1841 transitions. [2021-11-06 10:41:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 10:41:52,795 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-06 10:41:52,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:41:52,797 INFO L225 Difference]: With dead ends: 1674 [2021-11-06 10:41:52,797 INFO L226 Difference]: Without dead ends: 1420 [2021-11-06 10:41:52,797 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2021-11-06 10:41:52,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-06 10:41:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 924. [2021-11-06 10:41:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 906 states have (on average 1.1147902869757174) internal successors, (1010), 923 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states 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 10:41:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1010 transitions. [2021-11-06 10:41:52,852 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1010 transitions. Word has length 133 [2021-11-06 10:41:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:41:52,853 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1010 transitions. [2021-11-06 10:41:52,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:41:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1010 transitions. [2021-11-06 10:41:52,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 10:41:52,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:41:52,854 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] [2021-11-06 10:41:52,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-06 10:41:52,855 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 10:41:52,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:41:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1365503146, now seen corresponding path program 1 times [2021-11-06 10:41:52,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:41:52,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417123815] [2021-11-06 10:41:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:41:52,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:41:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:41:55,794 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 10:41:55,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:41:55,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417123815] [2021-11-06 10:41:55,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417123815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:41:55,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:41:55,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 10:41:55,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490440751] [2021-11-06 10:41:55,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 10:41:55,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:41:55,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 10:41:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:41:55,796 INFO L87 Difference]: Start difference. First operand 924 states and 1010 transitions. Second operand has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:42:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:42:17,065 INFO L93 Difference]: Finished difference Result 1564 states and 1714 transitions. [2021-11-06 10:42:17,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-06 10:42:17,065 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-06 10:42:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:42:17,067 INFO L225 Difference]: With dead ends: 1564 [2021-11-06 10:42:17,067 INFO L226 Difference]: Without dead ends: 1070 [2021-11-06 10:42:17,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=332, Invalid=1150, Unknown=0, NotChecked=0, Total=1482 [2021-11-06 10:42:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-11-06 10:42:17,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 834. [2021-11-06 10:42:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 816 states have (on average 1.1127450980392157) internal successors, (908), 833 states have internal predecessors, (908), 0 states have call successors, (0), 0 states 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 10:42:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 908 transitions. [2021-11-06 10:42:17,119 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 908 transitions. Word has length 133 [2021-11-06 10:42:17,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:42:17,120 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 908 transitions. [2021-11-06 10:42:17,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:42:17,120 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 908 transitions. [2021-11-06 10:42:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 10:42:17,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:42:17,121 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] [2021-11-06 10:42:17,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-06 10:42:17,121 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 10:42:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:42:17,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1948940168, now seen corresponding path program 1 times [2021-11-06 10:42:17,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:42:17,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687856884] [2021-11-06 10:42:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:42:17,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:42:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:42:30,288 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 10:42:30,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:42:30,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687856884] [2021-11-06 10:42:30,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687856884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:42:30,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:42:30,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-06 10:42:30,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972944867] [2021-11-06 10:42:30,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-06 10:42:30,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:42:30,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-06 10:42:30,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1153, Unknown=0, NotChecked=0, Total=1260 [2021-11-06 10:42:30,289 INFO L87 Difference]: Start difference. First operand 834 states and 908 transitions. Second operand has 36 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 36 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:43:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:43:32,459 INFO L93 Difference]: Finished difference Result 1505 states and 1640 transitions. [2021-11-06 10:43:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-06 10:43:32,460 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 36 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-06 10:43:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:43:32,462 INFO L225 Difference]: With dead ends: 1505 [2021-11-06 10:43:32,462 INFO L226 Difference]: Without dead ends: 1344 [2021-11-06 10:43:32,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=880, Invalid=5600, Unknown=0, NotChecked=0, Total=6480 [2021-11-06 10:43:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-11-06 10:43:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 889. [2021-11-06 10:43:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 871 states have (on average 1.1067738231917337) internal successors, (964), 888 states have internal predecessors, (964), 0 states have call successors, (0), 0 states 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 10:43:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 964 transitions. [2021-11-06 10:43:32,518 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 964 transitions. Word has length 133 [2021-11-06 10:43:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:43:32,518 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 964 transitions. [2021-11-06 10:43:32,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 36 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 10:43:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 964 transitions. [2021-11-06 10:43:32,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 10:43:32,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:43:32,520 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] [2021-11-06 10:43:32,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-06 10:43:32,520 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 10:43:32,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:43:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1155241046, now seen corresponding path program 1 times [2021-11-06 10:43:32,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:43:32,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366465809] [2021-11-06 10:43:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:43:32,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15