./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_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_cursor_eq_byte_buf_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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:35:12,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:35:12,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:35:12,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:35:12,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:35:12,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:35:12,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:35:12,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:35:12,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:35:12,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:35:12,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:35:12,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:35:12,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:35:12,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:35:12,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:35:12,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:35:12,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:35:12,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:35:12,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:35:12,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:35:12,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:35:12,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:35:12,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:35:12,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:35:12,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:35:12,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:35:12,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:35:12,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:35:12,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:35:12,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:35:12,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:35:12,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:35:12,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:35:12,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:35:12,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:35:12,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:35:12,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:35:12,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:35:12,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:35:12,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:35:12,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:35:12,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:35:12,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:35:12,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:35:12,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:35:12,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:35:12,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:35:12,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:35:12,182 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:35:12,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:35:12,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:35:12,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:35:12,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:35:12,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:35:12,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:35:12,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:35:12,184 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:35:12,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:35:12,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:35:12,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:35:12,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:35:12,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:35:12,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:35:12,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:35:12,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:35:12,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:35:12,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:35:12,186 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:35:12,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:35:12,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:35:12,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:35:12,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-06 10:35:12,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:35:12,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:35:12,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:35:12,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:35:12,416 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:35:12,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-06 10:35:12,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/728b16dcb/48ff2c49c9c54a64b684e2b818941474/FLAG64824c4c1 [2021-11-06 10:35:12,999 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:35:12,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-06 10:35:13,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/728b16dcb/48ff2c49c9c54a64b684e2b818941474/FLAG64824c4c1 [2021-11-06 10:35:13,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/728b16dcb/48ff2c49c9c54a64b684e2b818941474 [2021-11-06 10:35:13,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:35:13,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:35:13,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:35:13,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:35:13,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:35:13,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:35:13" (1/1) ... [2021-11-06 10:35:13,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f05ec3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:13, skipping insertion in model container [2021-11-06 10:35:13,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:35:13" (1/1) ... [2021-11-06 10:35:13,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:35:13,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:35:13,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-06 10:35:13,553 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-06 10:35:13,571 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:35:13,576 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:35:14,008 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,018 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,019 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,020 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,020 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,237 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:35:14,238 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:35:14,239 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:35:14,241 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:35:14,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:35:14,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:35:14,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:35:14,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:35:14,249 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:35:14,250 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:35:14,363 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:35:14,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:35:14,568 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:35:14,586 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-06 10:35:14,588 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-06 10:35:14,590 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:35:14,591 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:35:14,615 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,622 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,622 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,623 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,623 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:35:14,645 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:35:14,645 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:35:14,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:35:14,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:35:14,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:35:14,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:35:14,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:35:14,648 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:35:14,650 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:35:14,667 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:35:14,733 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,733 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:35:14,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:35:14,895 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:35:14,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14 WrapperNode [2021-11-06 10:35:14,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:35:14,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:35:14,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:35:14,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:35:14,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:14,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:15,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:35:15,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:35:15,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:35:15,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:35:15,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:15,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:15,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:15,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:15,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:15,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:15,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:15,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:35:15,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:35:15,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:35:15,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:35:15,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (1/1) ... [2021-11-06 10:35:15,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:35:15,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:35:15,225 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 10:35:15,269 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 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:35:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:35:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:35:22,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:35:22,668 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-11-06 10:35:22,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:22 BoogieIcfgContainer [2021-11-06 10:35:22,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:35:22,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:35:22,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:35:22,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:35:22,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:35:13" (1/3) ... [2021-11-06 10:35:22,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48edb6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:22, skipping insertion in model container [2021-11-06 10:35:22,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:14" (2/3) ... [2021-11-06 10:35:22,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48edb6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:22, skipping insertion in model container [2021-11-06 10:35:22,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:22" (3/3) ... [2021-11-06 10:35:22,675 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-11-06 10:35:22,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:35:22,689 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-06 10:35:22,745 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:35:22,760 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 10:35:22,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-06 10:35:22,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 10:35:22,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:22,788 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] [2021-11-06 10:35:22,789 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1810806174, now seen corresponding path program 1 times [2021-11-06 10:35:22,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:22,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518068630] [2021-11-06 10:35:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:22,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:23,303 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 10:35:23,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:23,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518068630] [2021-11-06 10:35:23,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518068630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:23,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:23,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:35:23,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182508291] [2021-11-06 10:35:23,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:35:23,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:23,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:35:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:35:23,326 INFO L87 Difference]: Start difference. First operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:23,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:23,365 INFO L93 Difference]: Finished difference Result 444 states and 617 transitions. [2021-11-06 10:35:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:35:23,367 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-06 10:35:23,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:23,377 INFO L225 Difference]: With dead ends: 444 [2021-11-06 10:35:23,377 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 10:35:23,380 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 10:35:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 10:35:23,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 10:35:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3480392156862746) internal successors, (275), 216 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 275 transitions. [2021-11-06 10:35:23,422 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 275 transitions. Word has length 53 [2021-11-06 10:35:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:23,423 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 275 transitions. [2021-11-06 10:35:23,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 275 transitions. [2021-11-06 10:35:23,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 10:35:23,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:23,428 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] [2021-11-06 10:35:23,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:35:23,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1818889704, now seen corresponding path program 1 times [2021-11-06 10:35:23,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:23,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267087838] [2021-11-06 10:35:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:23,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:23,718 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 10:35:23,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:23,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267087838] [2021-11-06 10:35:23,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267087838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:23,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:23,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:35:23,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086686746] [2021-11-06 10:35:23,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:35:23,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:35:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:35:23,721 INFO L87 Difference]: Start difference. First operand 217 states and 275 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:23,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:23,864 INFO L93 Difference]: Finished difference Result 413 states and 523 transitions. [2021-11-06 10:35:23,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:35:23,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-06 10:35:23,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:23,868 INFO L225 Difference]: With dead ends: 413 [2021-11-06 10:35:23,868 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 10:35:23,869 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 10:35:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 10:35:23,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 10:35:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3333333333333333) internal successors, (272), 216 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 272 transitions. [2021-11-06 10:35:23,875 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 272 transitions. Word has length 53 [2021-11-06 10:35:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:23,875 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 272 transitions. [2021-11-06 10:35:23,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 272 transitions. [2021-11-06 10:35:23,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 10:35:23,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:23,877 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] [2021-11-06 10:35:23,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:35:23,877 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:23,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1514747006, now seen corresponding path program 1 times [2021-11-06 10:35:23,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:23,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159419892] [2021-11-06 10:35:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:23,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:24,139 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 10:35:24,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:24,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159419892] [2021-11-06 10:35:24,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159419892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:24,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:24,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:35:24,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031497623] [2021-11-06 10:35:24,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:35:24,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:35:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:35:24,141 INFO L87 Difference]: Start difference. First operand 217 states and 272 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:24,275 INFO L93 Difference]: Finished difference Result 385 states and 482 transitions. [2021-11-06 10:35:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:35:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-06 10:35:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:24,276 INFO L225 Difference]: With dead ends: 385 [2021-11-06 10:35:24,277 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 10:35:24,277 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 10:35:24,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 10:35:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 10:35:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3235294117647058) internal successors, (270), 216 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 270 transitions. [2021-11-06 10:35:24,282 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 270 transitions. Word has length 57 [2021-11-06 10:35:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:24,283 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 270 transitions. [2021-11-06 10:35:24,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 270 transitions. [2021-11-06 10:35:24,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 10:35:24,288 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:24,288 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] [2021-11-06 10:35:24,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:35:24,288 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:24,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:24,289 INFO L85 PathProgramCache]: Analyzing trace with hash 319412887, now seen corresponding path program 1 times [2021-11-06 10:35:24,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:24,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073832649] [2021-11-06 10:35:24,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:24,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:35:24,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:24,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073832649] [2021-11-06 10:35:24,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073832649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:24,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:24,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:35:24,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267723929] [2021-11-06 10:35:24,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:35:24,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:24,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:35:24,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:35:24,624 INFO L87 Difference]: Start difference. First operand 217 states and 270 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:24,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:24,854 INFO L93 Difference]: Finished difference Result 326 states and 400 transitions. [2021-11-06 10:35:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:35:24,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-06 10:35:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:24,855 INFO L225 Difference]: With dead ends: 326 [2021-11-06 10:35:24,855 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 10:35:24,856 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 10:35:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 10:35:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 10:35:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3186274509803921) internal successors, (269), 216 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 269 transitions. [2021-11-06 10:35:24,870 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 269 transitions. Word has length 63 [2021-11-06 10:35:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:24,871 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 269 transitions. [2021-11-06 10:35:24,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 269 transitions. [2021-11-06 10:35:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 10:35:24,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:24,872 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] [2021-11-06 10:35:24,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:35:24,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash 321872050, now seen corresponding path program 1 times [2021-11-06 10:35:24,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:24,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685076416] [2021-11-06 10:35:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:24,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:25,200 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 10:35:25,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:25,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685076416] [2021-11-06 10:35:25,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685076416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:25,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:25,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:35:25,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977914829] [2021-11-06 10:35:25,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:35:25,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:25,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:35:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:35:25,201 INFO L87 Difference]: Start difference. First operand 217 states and 269 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:25,429 INFO L93 Difference]: Finished difference Result 345 states and 424 transitions. [2021-11-06 10:35:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:35:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-06 10:35:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:25,430 INFO L225 Difference]: With dead ends: 345 [2021-11-06 10:35:25,430 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 10:35:25,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:35:25,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 10:35:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 10:35:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3088235294117647) internal successors, (267), 216 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 267 transitions. [2021-11-06 10:35:25,435 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 267 transitions. Word has length 65 [2021-11-06 10:35:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:25,435 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 267 transitions. [2021-11-06 10:35:25,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 267 transitions. [2021-11-06 10:35:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 10:35:25,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:25,436 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] [2021-11-06 10:35:25,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:35:25,436 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1147926727, now seen corresponding path program 1 times [2021-11-06 10:35:25,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:25,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096828902] [2021-11-06 10:35:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:25,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:35:25,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:25,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096828902] [2021-11-06 10:35:25,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096828902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:25,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:25,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:35:25,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082908801] [2021-11-06 10:35:25,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:35:25,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:35:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:35:25,973 INFO L87 Difference]: Start difference. First operand 217 states and 267 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:26,464 INFO L93 Difference]: Finished difference Result 390 states and 473 transitions. [2021-11-06 10:35:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:35:26,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 10:35:26,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:26,465 INFO L225 Difference]: With dead ends: 390 [2021-11-06 10:35:26,466 INFO L226 Difference]: Without dead ends: 386 [2021-11-06 10:35:26,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:35:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-06 10:35:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 225. [2021-11-06 10:35:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 212 states have (on average 1.2971698113207548) internal successors, (275), 224 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 275 transitions. [2021-11-06 10:35:26,471 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 275 transitions. Word has length 71 [2021-11-06 10:35:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:26,471 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 275 transitions. [2021-11-06 10:35:26,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:26,471 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 275 transitions. [2021-11-06 10:35:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 10:35:26,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:26,472 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] [2021-11-06 10:35:26,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:35:26,472 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:26,472 INFO L85 PathProgramCache]: Analyzing trace with hash 52918081, now seen corresponding path program 1 times [2021-11-06 10:35:26,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:26,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301647551] [2021-11-06 10:35:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:26,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:27,854 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 10:35:27,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:27,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301647551] [2021-11-06 10:35:27,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301647551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:27,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:27,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:35:27,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370211795] [2021-11-06 10:35:27,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:35:27,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:27,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:35:27,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:35:27,856 INFO L87 Difference]: Start difference. First operand 225 states and 275 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:41,287 INFO L93 Difference]: Finished difference Result 704 states and 856 transitions. [2021-11-06 10:35:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:35:41,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-06 10:35:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:41,292 INFO L225 Difference]: With dead ends: 704 [2021-11-06 10:35:41,292 INFO L226 Difference]: Without dead ends: 533 [2021-11-06 10:35:41,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2021-11-06 10:35:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-06 10:35:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 372. [2021-11-06 10:35:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 359 states have (on average 1.2924791086350975) internal successors, (464), 371 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 464 transitions. [2021-11-06 10:35:41,314 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 464 transitions. Word has length 75 [2021-11-06 10:35:41,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:41,315 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 464 transitions. [2021-11-06 10:35:41,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 464 transitions. [2021-11-06 10:35:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 10:35:41,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:41,317 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 10:35:41,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:35:41,318 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:41,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:41,318 INFO L85 PathProgramCache]: Analyzing trace with hash -599539449, now seen corresponding path program 1 times [2021-11-06 10:35:41,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:41,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64121914] [2021-11-06 10:35:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:41,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:42,825 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 10:35:42,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:42,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64121914] [2021-11-06 10:35:42,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64121914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:42,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:42,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:35:42,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010209144] [2021-11-06 10:35:42,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:35:42,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:35:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:35:42,827 INFO L87 Difference]: Start difference. First operand 372 states and 464 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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 10:35:51,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:51,464 INFO L93 Difference]: Finished difference Result 827 states and 1035 transitions. [2021-11-06 10:35:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:35:51,465 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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 10:35:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:51,467 INFO L225 Difference]: With dead ends: 827 [2021-11-06 10:35:51,467 INFO L226 Difference]: Without dead ends: 613 [2021-11-06 10:35:51,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:35:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-06 10:35:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 479. [2021-11-06 10:35:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 466 states have (on average 1.2896995708154506) internal successors, (601), 478 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 601 transitions. [2021-11-06 10:35:51,481 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 601 transitions. Word has length 78 [2021-11-06 10:35:51,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:51,481 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 601 transitions. [2021-11-06 10:35:51,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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 10:35:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 601 transitions. [2021-11-06 10:35:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 10:35:51,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:51,482 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:35:51,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 10:35:51,482 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:51,483 INFO L85 PathProgramCache]: Analyzing trace with hash -733552955, now seen corresponding path program 1 times [2021-11-06 10:35:51,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:51,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311939563] [2021-11-06 10:35:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:51,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:51,669 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 10:35:51,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:51,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311939563] [2021-11-06 10:35:51,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311939563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:51,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:51,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:35:51,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947540596] [2021-11-06 10:35:51,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:35:51,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:35:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:35:51,671 INFO L87 Difference]: Start difference. First operand 479 states and 601 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 10:35:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:51,895 INFO L93 Difference]: Finished difference Result 962 states and 1219 transitions. [2021-11-06 10:35:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:35:51,896 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 10:35:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:51,898 INFO L225 Difference]: With dead ends: 962 [2021-11-06 10:35:51,898 INFO L226 Difference]: Without dead ends: 559 [2021-11-06 10:35:51,899 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 10:35:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-06 10:35:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 495. [2021-11-06 10:35:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 482 states have (on average 1.2759336099585061) internal successors, (615), 494 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 615 transitions. [2021-11-06 10:35:51,913 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 615 transitions. Word has length 78 [2021-11-06 10:35:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:51,913 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 615 transitions. [2021-11-06 10:35:51,914 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 10:35:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 615 transitions. [2021-11-06 10:35:51,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 10:35:51,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:51,915 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] [2021-11-06 10:35:51,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 10:35:51,915 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:51,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:51,915 INFO L85 PathProgramCache]: Analyzing trace with hash -544811959, now seen corresponding path program 1 times [2021-11-06 10:35:51,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:51,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552621130] [2021-11-06 10:35:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:51,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:52,452 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 10:35:52,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:52,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552621130] [2021-11-06 10:35:52,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552621130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:52,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:52,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:35:52,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485471314] [2021-11-06 10:35:52,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:35:52,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:35:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:35:52,454 INFO L87 Difference]: Start difference. First operand 495 states and 615 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:53,040 INFO L93 Difference]: Finished difference Result 1075 states and 1328 transitions. [2021-11-06 10:35:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:35:53,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 10:35:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:53,042 INFO L225 Difference]: With dead ends: 1075 [2021-11-06 10:35:53,042 INFO L226 Difference]: Without dead ends: 662 [2021-11-06 10:35:53,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:35:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-11-06 10:35:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 495. [2021-11-06 10:35:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 482 states have (on average 1.2697095435684647) internal successors, (612), 494 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 612 transitions. [2021-11-06 10:35:53,054 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 612 transitions. Word has length 79 [2021-11-06 10:35:53,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:53,055 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 612 transitions. [2021-11-06 10:35:53,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 612 transitions. [2021-11-06 10:35:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 10:35:53,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:53,057 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] [2021-11-06 10:35:53,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 10:35:53,058 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:53,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:53,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1220520658, now seen corresponding path program 1 times [2021-11-06 10:35:53,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:53,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082864131] [2021-11-06 10:35:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:53,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:53,594 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 10:35:53,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:53,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082864131] [2021-11-06 10:35:53,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082864131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:53,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:53,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:35:53,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375506025] [2021-11-06 10:35:53,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:35:53,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:53,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:35:53,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:35:53,596 INFO L87 Difference]: Start difference. First operand 495 states and 612 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:56,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:56,517 INFO L93 Difference]: Finished difference Result 1037 states and 1282 transitions. [2021-11-06 10:35:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:35:56,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-06 10:35:56,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:56,520 INFO L225 Difference]: With dead ends: 1037 [2021-11-06 10:35:56,520 INFO L226 Difference]: Without dead ends: 633 [2021-11-06 10:35:56,521 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 10:35:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-06 10:35:56,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 495. [2021-11-06 10:35:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 482 states have (on average 1.2531120331950207) internal successors, (604), 494 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 604 transitions. [2021-11-06 10:35:56,563 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 604 transitions. Word has length 81 [2021-11-06 10:35:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:56,563 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 604 transitions. [2021-11-06 10:35:56,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:56,563 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 604 transitions. [2021-11-06 10:35:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 10:35:56,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:56,564 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] [2021-11-06 10:35:56,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 10:35:56,565 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:35:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1858292912, now seen corresponding path program 1 times [2021-11-06 10:35:56,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:56,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685026445] [2021-11-06 10:35:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:56,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:57,217 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 10:35:57,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:57,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685026445] [2021-11-06 10:35:57,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685026445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:35:57,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:35:57,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:35:57,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663817839] [2021-11-06 10:35:57,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:35:57,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:35:57,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:35:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:35:57,219 INFO L87 Difference]: Start difference. First operand 495 states and 604 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:04,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:04,968 INFO L93 Difference]: Finished difference Result 728 states and 869 transitions. [2021-11-06 10:36:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:36:04,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-06 10:36:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:04,971 INFO L225 Difference]: With dead ends: 728 [2021-11-06 10:36:04,971 INFO L226 Difference]: Without dead ends: 601 [2021-11-06 10:36:04,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:36:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-06 10:36:04,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 443. [2021-11-06 10:36:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 430 states have (on average 1.2465116279069768) internal successors, (536), 442 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 536 transitions. [2021-11-06 10:36:04,983 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 536 transitions. Word has length 81 [2021-11-06 10:36:04,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:04,983 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 536 transitions. [2021-11-06 10:36:04,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 536 transitions. [2021-11-06 10:36:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:36:04,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:04,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:36:04,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 10:36:04,985 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:36:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:04,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2017431216, now seen corresponding path program 1 times [2021-11-06 10:36:04,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:04,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462133384] [2021-11-06 10:36:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:04,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:05,360 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 10:36:05,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:05,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462133384] [2021-11-06 10:36:05,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462133384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:05,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:05,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:36:05,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228814594] [2021-11-06 10:36:05,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:36:05,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:05,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:36:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:36:05,361 INFO L87 Difference]: Start difference. First operand 443 states and 536 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:05,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:05,895 INFO L93 Difference]: Finished difference Result 679 states and 803 transitions. [2021-11-06 10:36:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:36:05,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:36:05,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:05,898 INFO L225 Difference]: With dead ends: 679 [2021-11-06 10:36:05,898 INFO L226 Difference]: Without dead ends: 675 [2021-11-06 10:36:05,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:36:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-06 10:36:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 455. [2021-11-06 10:36:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 442 states have (on average 1.239819004524887) internal successors, (548), 454 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 548 transitions. [2021-11-06 10:36:05,923 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 548 transitions. Word has length 82 [2021-11-06 10:36:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:05,923 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 548 transitions. [2021-11-06 10:36:05,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 548 transitions. [2021-11-06 10:36:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:36:05,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:05,924 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] [2021-11-06 10:36:05,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 10:36:05,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:36:05,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:05,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1022528614, now seen corresponding path program 1 times [2021-11-06 10:36:05,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:05,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532077377] [2021-11-06 10:36:05,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:05,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:36:06,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:06,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532077377] [2021-11-06 10:36:06,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532077377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:06,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:06,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:36:06,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859667948] [2021-11-06 10:36:06,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:36:06,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:06,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:36:06,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:36:06,906 INFO L87 Difference]: Start difference. First operand 455 states and 548 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:17,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:17,878 INFO L93 Difference]: Finished difference Result 1171 states and 1420 transitions. [2021-11-06 10:36:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:36:17,879 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-06 10:36:17,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:17,881 INFO L225 Difference]: With dead ends: 1171 [2021-11-06 10:36:17,881 INFO L226 Difference]: Without dead ends: 849 [2021-11-06 10:36:17,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:36:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-06 10:36:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 684. [2021-11-06 10:36:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 671 states have (on average 1.247391952309985) internal successors, (837), 683 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 837 transitions. [2021-11-06 10:36:17,899 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 837 transitions. Word has length 86 [2021-11-06 10:36:17,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:17,900 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 837 transitions. [2021-11-06 10:36:17,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 837 transitions. [2021-11-06 10:36:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:36:17,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:17,901 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] [2021-11-06 10:36:17,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 10:36:17,901 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:36:17,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash 593301109, now seen corresponding path program 1 times [2021-11-06 10:36:17,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:17,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298105486] [2021-11-06 10:36:17,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:17,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:18,160 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 10:36:18,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:18,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298105486] [2021-11-06 10:36:18,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298105486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:18,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:18,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:36:18,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997178084] [2021-11-06 10:36:18,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:36:18,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:18,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:36:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:36:18,162 INFO L87 Difference]: Start difference. First operand 684 states and 837 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:18,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:18,324 INFO L93 Difference]: Finished difference Result 1134 states and 1378 transitions. [2021-11-06 10:36:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:36:18,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-06 10:36:18,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:18,327 INFO L225 Difference]: With dead ends: 1134 [2021-11-06 10:36:18,327 INFO L226 Difference]: Without dead ends: 981 [2021-11-06 10:36:18,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:36:18,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-11-06 10:36:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 874. [2021-11-06 10:36:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 861 states have (on average 1.2415795586527294) internal successors, (1069), 873 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1069 transitions. [2021-11-06 10:36:18,350 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1069 transitions. Word has length 86 [2021-11-06 10:36:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:18,350 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1069 transitions. [2021-11-06 10:36:18,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1069 transitions. [2021-11-06 10:36:18,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:36:18,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:18,351 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] [2021-11-06 10:36:18,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 10:36:18,352 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:36:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:18,352 INFO L85 PathProgramCache]: Analyzing trace with hash 764363176, now seen corresponding path program 1 times [2021-11-06 10:36:18,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:18,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536315788] [2021-11-06 10:36:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:18,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:18,916 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 10:36:18,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:18,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536315788] [2021-11-06 10:36:18,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536315788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:18,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:18,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:36:18,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780753253] [2021-11-06 10:36:18,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:36:18,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:36:18,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:36:18,918 INFO L87 Difference]: Start difference. First operand 874 states and 1069 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:26,832 INFO L93 Difference]: Finished difference Result 2160 states and 2653 transitions. [2021-11-06 10:36:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:36:26,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-06 10:36:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:26,836 INFO L225 Difference]: With dead ends: 2160 [2021-11-06 10:36:26,836 INFO L226 Difference]: Without dead ends: 1393 [2021-11-06 10:36:26,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:36:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-11-06 10:36:26,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 917. [2021-11-06 10:36:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 904 states have (on average 1.2444690265486726) internal successors, (1125), 916 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:26,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1125 transitions. [2021-11-06 10:36:26,863 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1125 transitions. Word has length 86 [2021-11-06 10:36:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:26,863 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1125 transitions. [2021-11-06 10:36:26,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1125 transitions. [2021-11-06 10:36:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:36:26,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:26,865 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] [2021-11-06 10:36:26,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 10:36:26,865 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:36:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:26,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1444421546, now seen corresponding path program 1 times [2021-11-06 10:36:26,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:26,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674222645] [2021-11-06 10:36:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:26,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:28,187 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 10:36:28,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:28,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674222645] [2021-11-06 10:36:28,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674222645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:28,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:28,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:36:28,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422581839] [2021-11-06 10:36:28,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:36:28,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:28,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:36:28,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:36:28,188 INFO L87 Difference]: Start difference. First operand 917 states and 1125 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:42,649 INFO L93 Difference]: Finished difference Result 2611 states and 3127 transitions. [2021-11-06 10:36:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-06 10:36:42,650 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-06 10:36:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:42,656 INFO L225 Difference]: With dead ends: 2611 [2021-11-06 10:36:42,656 INFO L226 Difference]: Without dead ends: 2457 [2021-11-06 10:36:42,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=764, Invalid=2776, Unknown=0, NotChecked=0, Total=3540 [2021-11-06 10:36:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2021-11-06 10:36:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 945. [2021-11-06 10:36:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 932 states have (on average 1.2414163090128756) internal successors, (1157), 944 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1157 transitions. [2021-11-06 10:36:42,692 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1157 transitions. Word has length 86 [2021-11-06 10:36:42,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:42,692 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 1157 transitions. [2021-11-06 10:36:42,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1157 transitions. [2021-11-06 10:36:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 10:36:42,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:42,694 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] [2021-11-06 10:36:42,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 10:36:42,694 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:36:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash 466581414, now seen corresponding path program 1 times [2021-11-06 10:36:42,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:42,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588693729] [2021-11-06 10:36:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:42,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:43,578 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 10:36:43,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:43,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588693729] [2021-11-06 10:36:43,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588693729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:43,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:43,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:36:43,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304162571] [2021-11-06 10:36:43,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:36:43,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:36:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:36:43,580 INFO L87 Difference]: Start difference. First operand 945 states and 1157 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:36:52,849 INFO L93 Difference]: Finished difference Result 1984 states and 2391 transitions. [2021-11-06 10:36:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 10:36:52,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 10:36:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:36:52,854 INFO L225 Difference]: With dead ends: 1984 [2021-11-06 10:36:52,855 INFO L226 Difference]: Without dead ends: 1802 [2021-11-06 10:36:52,856 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2021-11-06 10:36:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-11-06 10:36:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1039. [2021-11-06 10:36:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1026 states have (on average 1.2387914230019492) internal successors, (1271), 1038 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1271 transitions. [2021-11-06 10:36:52,887 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1271 transitions. Word has length 87 [2021-11-06 10:36:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:36:52,887 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 1271 transitions. [2021-11-06 10:36:52,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:36:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1271 transitions. [2021-11-06 10:36:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 10:36:52,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:36:52,888 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] [2021-11-06 10:36:52,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 10:36:52,889 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:36:52,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:36:52,889 INFO L85 PathProgramCache]: Analyzing trace with hash 600594920, now seen corresponding path program 1 times [2021-11-06 10:36:52,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:36:52,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834509868] [2021-11-06 10:36:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:36:52,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:36:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:36:56,266 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 10:36:56,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:36:56,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834509868] [2021-11-06 10:36:56,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834509868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:36:56,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:36:56,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 10:36:56,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437456016] [2021-11-06 10:36:56,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:36:56,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:36:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:36:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:36:56,268 INFO L87 Difference]: Start difference. First operand 1039 states and 1271 transitions. Second operand has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:16,080 INFO L93 Difference]: Finished difference Result 1522 states and 1817 transitions. [2021-11-06 10:37:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-06 10:37:16,081 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 10:37:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:16,085 INFO L225 Difference]: With dead ends: 1522 [2021-11-06 10:37:16,085 INFO L226 Difference]: Without dead ends: 1520 [2021-11-06 10:37:16,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=482, Invalid=1240, Unknown=0, NotChecked=0, Total=1722 [2021-11-06 10:37:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-11-06 10:37:16,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1078. [2021-11-06 10:37:16,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1065 states have (on average 1.2384976525821596) internal successors, (1319), 1077 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1319 transitions. [2021-11-06 10:37:16,157 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1319 transitions. Word has length 87 [2021-11-06 10:37:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:16,157 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 1319 transitions. [2021-11-06 10:37:16,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1319 transitions. [2021-11-06 10:37:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 10:37:16,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:16,159 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] [2021-11-06 10:37:16,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 10:37:16,159 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:37:16,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1451715357, now seen corresponding path program 1 times [2021-11-06 10:37:16,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:16,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687829937] [2021-11-06 10:37:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:16,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:19,448 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 10:37:19,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:19,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687829937] [2021-11-06 10:37:19,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687829937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:19,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:19,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:37:19,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535306638] [2021-11-06 10:37:19,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:37:19,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:37:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:37:19,450 INFO L87 Difference]: Start difference. First operand 1078 states and 1319 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:20,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:20,344 INFO L93 Difference]: Finished difference Result 2437 states and 2987 transitions. [2021-11-06 10:37:20,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:37:20,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 10:37:20,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:20,348 INFO L225 Difference]: With dead ends: 2437 [2021-11-06 10:37:20,348 INFO L226 Difference]: Without dead ends: 1518 [2021-11-06 10:37:20,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:37:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-11-06 10:37:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1380. [2021-11-06 10:37:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1367 states have (on average 1.2435991221653255) internal successors, (1700), 1379 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1700 transitions. [2021-11-06 10:37:20,386 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1700 transitions. Word has length 87 [2021-11-06 10:37:20,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:20,386 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 1700 transitions. [2021-11-06 10:37:20,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1700 transitions. [2021-11-06 10:37:20,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 10:37:20,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:20,388 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] [2021-11-06 10:37:20,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 10:37:20,388 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:37:20,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:20,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1832928425, now seen corresponding path program 1 times [2021-11-06 10:37:20,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:20,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180063068] [2021-11-06 10:37:20,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:20,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:20,895 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 10:37:20,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:20,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180063068] [2021-11-06 10:37:20,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180063068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:20,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:20,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:37:20,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926071496] [2021-11-06 10:37:20,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:37:20,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:37:20,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:37:20,896 INFO L87 Difference]: Start difference. First operand 1380 states and 1700 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:21,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:21,506 INFO L93 Difference]: Finished difference Result 3025 states and 3702 transitions. [2021-11-06 10:37:21,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:37:21,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-06 10:37:21,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:21,510 INFO L225 Difference]: With dead ends: 3025 [2021-11-06 10:37:21,511 INFO L226 Difference]: Without dead ends: 1662 [2021-11-06 10:37:21,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:37:21,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2021-11-06 10:37:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1357. [2021-11-06 10:37:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1344 states have (on average 1.2313988095238095) internal successors, (1655), 1356 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1655 transitions. [2021-11-06 10:37:21,555 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1655 transitions. Word has length 91 [2021-11-06 10:37:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:21,555 INFO L470 AbstractCegarLoop]: Abstraction has 1357 states and 1655 transitions. [2021-11-06 10:37:21,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1655 transitions. [2021-11-06 10:37:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:37:21,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:21,557 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] [2021-11-06 10:37:21,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 10:37:21,558 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:37:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1541645744, now seen corresponding path program 1 times [2021-11-06 10:37:21,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:21,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906157113] [2021-11-06 10:37:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:21,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:37:21,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:21,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906157113] [2021-11-06 10:37:21,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906157113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:21,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:21,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:37:21,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264769106] [2021-11-06 10:37:21,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:37:21,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:37:21,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:37:21,975 INFO L87 Difference]: Start difference. First operand 1357 states and 1655 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:27,266 INFO L93 Difference]: Finished difference Result 3965 states and 4832 transitions. [2021-11-06 10:37:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:37:27,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:37:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:27,272 INFO L225 Difference]: With dead ends: 3965 [2021-11-06 10:37:27,272 INFO L226 Difference]: Without dead ends: 2680 [2021-11-06 10:37:27,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:37:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-11-06 10:37:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1518. [2021-11-06 10:37:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1505 states have (on average 1.2325581395348837) internal successors, (1855), 1517 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 1855 transitions. [2021-11-06 10:37:27,320 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 1855 transitions. Word has length 93 [2021-11-06 10:37:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:27,320 INFO L470 AbstractCegarLoop]: Abstraction has 1518 states and 1855 transitions. [2021-11-06 10:37:27,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 1855 transitions. [2021-11-06 10:37:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:37:27,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:27,322 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] [2021-11-06 10:37:27,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 10:37:27,323 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:37:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:27,324 INFO L85 PathProgramCache]: Analyzing trace with hash -791746894, now seen corresponding path program 1 times [2021-11-06 10:37:27,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:27,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703327871] [2021-11-06 10:37:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:27,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:27,492 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 10:37:27,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:27,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703327871] [2021-11-06 10:37:27,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703327871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:27,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:27,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:37:27,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627073869] [2021-11-06 10:37:27,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:37:27,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:27,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:37:27,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:37:27,494 INFO L87 Difference]: Start difference. First operand 1518 states and 1855 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:27,711 INFO L93 Difference]: Finished difference Result 3090 states and 3763 transitions. [2021-11-06 10:37:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:37:27,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:37:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:27,715 INFO L225 Difference]: With dead ends: 3090 [2021-11-06 10:37:27,715 INFO L226 Difference]: Without dead ends: 1583 [2021-11-06 10:37:27,717 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 10:37:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-11-06 10:37:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1499. [2021-11-06 10:37:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1486 states have (on average 1.2099596231493943) internal successors, (1798), 1498 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1798 transitions. [2021-11-06 10:37:27,783 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1798 transitions. Word has length 93 [2021-11-06 10:37:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:27,783 INFO L470 AbstractCegarLoop]: Abstraction has 1499 states and 1798 transitions. [2021-11-06 10:37:27,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1798 transitions. [2021-11-06 10:37:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:37:27,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:27,785 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] [2021-11-06 10:37:27,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 10:37:27,785 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:37:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash 809678318, now seen corresponding path program 1 times [2021-11-06 10:37:27,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:27,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908474636] [2021-11-06 10:37:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:27,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:27,909 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 10:37:27,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:27,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908474636] [2021-11-06 10:37:27,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908474636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:27,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:27,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:37:27,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139576102] [2021-11-06 10:37:27,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:37:27,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:27,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:37:27,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:37:27,911 INFO L87 Difference]: Start difference. First operand 1499 states and 1798 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:28,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:28,136 INFO L93 Difference]: Finished difference Result 2369 states and 2816 transitions. [2021-11-06 10:37:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:37:28,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:37:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:28,139 INFO L225 Difference]: With dead ends: 2369 [2021-11-06 10:37:28,139 INFO L226 Difference]: Without dead ends: 1073 [2021-11-06 10:37:28,140 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 10:37:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-06 10:37:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 958. [2021-11-06 10:37:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 945 states have (on average 1.1841269841269841) internal successors, (1119), 957 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:28,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1119 transitions. [2021-11-06 10:37:28,166 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1119 transitions. Word has length 93 [2021-11-06 10:37:28,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:28,166 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1119 transitions. [2021-11-06 10:37:28,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1119 transitions. [2021-11-06 10:37:28,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:37:28,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:28,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:37:28,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 10:37:28,168 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:37:28,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1013450858, now seen corresponding path program 1 times [2021-11-06 10:37:28,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:28,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23513755] [2021-11-06 10:37:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:28,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:37:28,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:28,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23513755] [2021-11-06 10:37:28,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23513755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:28,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:28,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:37:28,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371638463] [2021-11-06 10:37:28,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:37:28,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:37:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:37:28,814 INFO L87 Difference]: Start difference. First operand 958 states and 1119 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:37:41,546 INFO L93 Difference]: Finished difference Result 2096 states and 2466 transitions. [2021-11-06 10:37:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:37:41,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:37:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:37:41,551 INFO L225 Difference]: With dead ends: 2096 [2021-11-06 10:37:41,551 INFO L226 Difference]: Without dead ends: 1856 [2021-11-06 10:37:41,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-06 10:37:41,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-11-06 10:37:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1093. [2021-11-06 10:37:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1080 states have (on average 1.1870370370370371) internal successors, (1282), 1092 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1282 transitions. [2021-11-06 10:37:41,588 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1282 transitions. Word has length 93 [2021-11-06 10:37:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:37:41,589 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 1282 transitions. [2021-11-06 10:37:41,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:37:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1282 transitions. [2021-11-06 10:37:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:37:41,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:37:41,591 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] [2021-11-06 10:37:41,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 10:37:41,591 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:37:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:37:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash -95835017, now seen corresponding path program 1 times [2021-11-06 10:37:41,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:37:41,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028556639] [2021-11-06 10:37:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:37:41,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:37:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:37:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:37:44,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:37:44,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028556639] [2021-11-06 10:37:44,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028556639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:37:44,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:37:44,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:37:44,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658795142] [2021-11-06 10:37:44,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:37:44,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:37:44,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:37:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:37:44,467 INFO L87 Difference]: Start difference. First operand 1093 states and 1282 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:04,455 INFO L93 Difference]: Finished difference Result 1756 states and 2013 transitions. [2021-11-06 10:38:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-06 10:38:04,455 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:38:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:04,459 INFO L225 Difference]: With dead ends: 1756 [2021-11-06 10:38:04,459 INFO L226 Difference]: Without dead ends: 1754 [2021-11-06 10:38:04,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=420, Invalid=1302, Unknown=0, NotChecked=0, Total=1722 [2021-11-06 10:38:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-11-06 10:38:04,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1135. [2021-11-06 10:38:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1122 states have (on average 1.1889483065953654) internal successors, (1334), 1134 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1334 transitions. [2021-11-06 10:38:04,495 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1334 transitions. Word has length 93 [2021-11-06 10:38:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:04,496 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1334 transitions. [2021-11-06 10:38:04,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1334 transitions. [2021-11-06 10:38:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:38:04,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:04,498 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] [2021-11-06 10:38:04,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 10:38:04,498 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:38:04,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 755285420, now seen corresponding path program 1 times [2021-11-06 10:38:04,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:04,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339275878] [2021-11-06 10:38:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:04,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:08,077 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 10:38:08,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:08,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339275878] [2021-11-06 10:38:08,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339275878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:08,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:08,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:38:08,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315685976] [2021-11-06 10:38:08,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:38:08,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:08,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:38:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:38:08,079 INFO L87 Difference]: Start difference. First operand 1135 states and 1334 transitions. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:17,633 INFO L93 Difference]: Finished difference Result 2062 states and 2426 transitions. [2021-11-06 10:38:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 10:38:17,633 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:38:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:17,637 INFO L225 Difference]: With dead ends: 2062 [2021-11-06 10:38:17,637 INFO L226 Difference]: Without dead ends: 1834 [2021-11-06 10:38:17,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=346, Invalid=776, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 10:38:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2021-11-06 10:38:17,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1147. [2021-11-06 10:38:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1134 states have (on average 1.1869488536155204) internal successors, (1346), 1146 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1346 transitions. [2021-11-06 10:38:17,678 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1346 transitions. Word has length 93 [2021-11-06 10:38:17,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:17,679 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1346 transitions. [2021-11-06 10:38:17,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1346 transitions. [2021-11-06 10:38:17,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:38:17,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:17,680 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] [2021-11-06 10:38:17,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 10:38:17,681 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:38:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash -677724762, now seen corresponding path program 1 times [2021-11-06 10:38:17,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:17,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774952773] [2021-11-06 10:38:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:17,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:38:18,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:18,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774952773] [2021-11-06 10:38:18,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774952773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:18,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:18,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:38:18,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929923889] [2021-11-06 10:38:18,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:38:18,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:18,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:38:18,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:38:18,433 INFO L87 Difference]: Start difference. First operand 1147 states and 1346 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:31,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:31,746 INFO L93 Difference]: Finished difference Result 2161 states and 2525 transitions. [2021-11-06 10:38:31,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:38:31,746 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:38:31,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:31,750 INFO L225 Difference]: With dead ends: 2161 [2021-11-06 10:38:31,750 INFO L226 Difference]: Without dead ends: 1734 [2021-11-06 10:38:31,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:38:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-11-06 10:38:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1617. [2021-11-06 10:38:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1604 states have (on average 1.1832917705735662) internal successors, (1898), 1616 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 1898 transitions. [2021-11-06 10:38:31,800 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 1898 transitions. Word has length 93 [2021-11-06 10:38:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:31,800 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 1898 transitions. [2021-11-06 10:38:31,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:31,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 1898 transitions. [2021-11-06 10:38:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:38:31,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:31,802 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] [2021-11-06 10:38:31,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 10:38:31,802 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:38:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:31,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2333608, now seen corresponding path program 1 times [2021-11-06 10:38:31,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:31,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448517624] [2021-11-06 10:38:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:31,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:38:32,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:32,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448517624] [2021-11-06 10:38:32,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448517624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:32,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:32,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:38:32,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780785146] [2021-11-06 10:38:32,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:38:32,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:32,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:38:32,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:38:32,198 INFO L87 Difference]: Start difference. First operand 1617 states and 1898 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:37,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:37,303 INFO L93 Difference]: Finished difference Result 2287 states and 2701 transitions. [2021-11-06 10:38:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:38:37,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:38:37,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:37,308 INFO L225 Difference]: With dead ends: 2287 [2021-11-06 10:38:37,308 INFO L226 Difference]: Without dead ends: 1920 [2021-11-06 10:38:37,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:38:37,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-11-06 10:38:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1617. [2021-11-06 10:38:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1604 states have (on average 1.1726932668329177) internal successors, (1881), 1616 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 1881 transitions. [2021-11-06 10:38:37,372 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 1881 transitions. Word has length 93 [2021-11-06 10:38:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:37,372 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 1881 transitions. [2021-11-06 10:38:37,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 1881 transitions. [2021-11-06 10:38:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:38:37,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:37,374 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] [2021-11-06 10:38:37,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 10:38:37,374 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:38:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:37,375 INFO L85 PathProgramCache]: Analyzing trace with hash -243995676, now seen corresponding path program 1 times [2021-11-06 10:38:37,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:37,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715781423] [2021-11-06 10:38:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:37,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:38,264 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 10:38:38,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:38,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715781423] [2021-11-06 10:38:38,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715781423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:38,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:38,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:38:38,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729165386] [2021-11-06 10:38:38,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:38:38,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:38,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:38:38,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:38:38,266 INFO L87 Difference]: Start difference. First operand 1617 states and 1881 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:49,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:49,802 INFO L93 Difference]: Finished difference Result 2061 states and 2344 transitions. [2021-11-06 10:38:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 10:38:49,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:38:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:49,805 INFO L225 Difference]: With dead ends: 2061 [2021-11-06 10:38:49,805 INFO L226 Difference]: Without dead ends: 1751 [2021-11-06 10:38:49,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2021-11-06 10:38:49,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-11-06 10:38:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1470. [2021-11-06 10:38:49,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1457 states have (on average 1.1702127659574468) internal successors, (1705), 1469 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1705 transitions. [2021-11-06 10:38:49,879 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1705 transitions. Word has length 93 [2021-11-06 10:38:49,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:49,879 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 1705 transitions. [2021-11-06 10:38:49,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:49,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1705 transitions. [2021-11-06 10:38:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:38:49,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:49,881 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] [2021-11-06 10:38:49,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 10:38:49,882 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:38:49,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1799236596, now seen corresponding path program 1 times [2021-11-06 10:38:49,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:49,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070199136] [2021-11-06 10:38:49,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:49,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:50,070 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 10:38:50,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:50,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070199136] [2021-11-06 10:38:50,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070199136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:50,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:50,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:38:50,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593620820] [2021-11-06 10:38:50,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:38:50,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:50,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:38:50,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:38:50,072 INFO L87 Difference]: Start difference. First operand 1470 states and 1705 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:50,342 INFO L93 Difference]: Finished difference Result 2933 states and 3407 transitions. [2021-11-06 10:38:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:38:50,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:38:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:50,345 INFO L225 Difference]: With dead ends: 2933 [2021-11-06 10:38:50,345 INFO L226 Difference]: Without dead ends: 1590 [2021-11-06 10:38:50,346 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 10:38:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-06 10:38:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1500. [2021-11-06 10:38:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1487 states have (on average 1.1634162743779422) internal successors, (1730), 1499 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1730 transitions. [2021-11-06 10:38:50,395 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1730 transitions. Word has length 93 [2021-11-06 10:38:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:50,395 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 1730 transitions. [2021-11-06 10:38:50,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1730 transitions. [2021-11-06 10:38:50,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:38:50,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:50,397 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] [2021-11-06 10:38:50,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 10:38:50,397 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:38:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:50,398 INFO L85 PathProgramCache]: Analyzing trace with hash -769877298, now seen corresponding path program 1 times [2021-11-06 10:38:50,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:50,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437913191] [2021-11-06 10:38:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:50,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:38:50,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:50,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437913191] [2021-11-06 10:38:50,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437913191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:50,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:50,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:38:50,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527523163] [2021-11-06 10:38:50,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:38:50,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:50,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:38:50,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:38:50,891 INFO L87 Difference]: Start difference. First operand 1500 states and 1730 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:53,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:53,496 INFO L93 Difference]: Finished difference Result 1960 states and 2271 transitions. [2021-11-06 10:38:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:38:53,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:38:53,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:53,498 INFO L225 Difference]: With dead ends: 1960 [2021-11-06 10:38:53,498 INFO L226 Difference]: Without dead ends: 1470 [2021-11-06 10:38:53,499 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 10:38:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-06 10:38:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1470. [2021-11-06 10:38:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1457 states have (on average 1.1564859299931365) internal successors, (1685), 1469 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1685 transitions. [2021-11-06 10:38:53,546 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1685 transitions. Word has length 93 [2021-11-06 10:38:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:53,547 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 1685 transitions. [2021-11-06 10:38:53,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1685 transitions. [2021-11-06 10:38:53,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 10:38:53,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:53,562 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] [2021-11-06 10:38:53,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 10:38:53,562 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:38:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:53,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1449935668, now seen corresponding path program 1 times [2021-11-06 10:38:53,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:53,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174701626] [2021-11-06 10:38:53,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:53,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:38:56,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:56,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174701626] [2021-11-06 10:38:56,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174701626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:56,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:56,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:38:56,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362118016] [2021-11-06 10:38:56,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:38:56,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:38:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:38:56,077 INFO L87 Difference]: Start difference. First operand 1470 states and 1685 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:38:59,071 INFO L93 Difference]: Finished difference Result 2822 states and 3244 transitions. [2021-11-06 10:38:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:38:59,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 10:38:59,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:38:59,073 INFO L225 Difference]: With dead ends: 2822 [2021-11-06 10:38:59,074 INFO L226 Difference]: Without dead ends: 1486 [2021-11-06 10:38:59,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:38:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-06 10:38:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1474. [2021-11-06 10:38:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1461 states have (on average 1.1560574948665299) internal successors, (1689), 1473 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1689 transitions. [2021-11-06 10:38:59,120 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1689 transitions. Word has length 93 [2021-11-06 10:38:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:38:59,120 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 1689 transitions. [2021-11-06 10:38:59,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:38:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1689 transitions. [2021-11-06 10:38:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 10:38:59,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:38:59,122 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] [2021-11-06 10:38:59,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-06 10:38:59,122 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:38:59,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:38:59,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1636337183, now seen corresponding path program 1 times [2021-11-06 10:38:59,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:38:59,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097993700] [2021-11-06 10:38:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:38:59,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:38:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:38:59,533 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 10:38:59,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:38:59,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097993700] [2021-11-06 10:38:59,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097993700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:38:59,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:38:59,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:38:59,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655694095] [2021-11-06 10:38:59,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:38:59,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:38:59,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:38:59,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:38:59,535 INFO L87 Difference]: Start difference. First operand 1474 states and 1689 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:39:00,662 INFO L93 Difference]: Finished difference Result 2213 states and 2535 transitions. [2021-11-06 10:39:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:39:00,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-06 10:39:00,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:39:00,665 INFO L225 Difference]: With dead ends: 2213 [2021-11-06 10:39:00,665 INFO L226 Difference]: Without dead ends: 2209 [2021-11-06 10:39:00,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:39:00,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2021-11-06 10:39:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 1528. [2021-11-06 10:39:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1515 states have (on average 1.1504950495049504) internal successors, (1743), 1527 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1743 transitions. [2021-11-06 10:39:00,722 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1743 transitions. Word has length 95 [2021-11-06 10:39:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:39:00,722 INFO L470 AbstractCegarLoop]: Abstraction has 1528 states and 1743 transitions. [2021-11-06 10:39:00,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1743 transitions. [2021-11-06 10:39:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 10:39:00,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:39:00,724 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] [2021-11-06 10:39:00,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-06 10:39:00,724 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:39:00,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:39:00,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1849283487, now seen corresponding path program 1 times [2021-11-06 10:39:00,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:39:00,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214365898] [2021-11-06 10:39:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:39:00,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:39:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:39:01,581 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 10:39:01,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:39:01,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214365898] [2021-11-06 10:39:01,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214365898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:39:01,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:39:01,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:39:01,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560835285] [2021-11-06 10:39:01,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:39:01,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:39:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:39:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:39:01,582 INFO L87 Difference]: Start difference. First operand 1528 states and 1743 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:18,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:39:18,822 INFO L93 Difference]: Finished difference Result 2083 states and 2341 transitions. [2021-11-06 10:39:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:39:18,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-06 10:39:18,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:39:18,825 INFO L225 Difference]: With dead ends: 2083 [2021-11-06 10:39:18,825 INFO L226 Difference]: Without dead ends: 1725 [2021-11-06 10:39:18,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2021-11-06 10:39:18,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2021-11-06 10:39:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1524. [2021-11-06 10:39:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1511 states have (on average 1.1455989410986103) internal successors, (1731), 1523 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1731 transitions. [2021-11-06 10:39:18,876 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1731 transitions. Word has length 95 [2021-11-06 10:39:18,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:39:18,876 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 1731 transitions. [2021-11-06 10:39:18,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1731 transitions. [2021-11-06 10:39:18,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 10:39:18,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:39:18,878 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 10:39:18,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-06 10:39:18,878 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:39:18,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:39:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1136546407, now seen corresponding path program 1 times [2021-11-06 10:39:18,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:39:18,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172661544] [2021-11-06 10:39:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:39:18,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:39:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:39:19,429 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 10:39:19,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:39:19,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172661544] [2021-11-06 10:39:19,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172661544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:39:19,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:39:19,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:39:19,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584312239] [2021-11-06 10:39:19,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:39:19,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:39:19,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:39:19,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:39:19,431 INFO L87 Difference]: Start difference. First operand 1524 states and 1731 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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 10:39:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:39:26,748 INFO L93 Difference]: Finished difference Result 1719 states and 1940 transitions. [2021-11-06 10:39:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:39:26,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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 10:39:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:39:26,751 INFO L225 Difference]: With dead ends: 1719 [2021-11-06 10:39:26,751 INFO L226 Difference]: Without dead ends: 1587 [2021-11-06 10:39:26,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:39:26,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-06 10:39:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1500. [2021-11-06 10:39:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1487 states have (on average 1.1398789509078682) internal successors, (1695), 1499 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1695 transitions. [2021-11-06 10:39:26,806 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1695 transitions. Word has length 96 [2021-11-06 10:39:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:39:26,806 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 1695 transitions. [2021-11-06 10:39:26,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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 10:39:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1695 transitions. [2021-11-06 10:39:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 10:39:26,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:39:26,808 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 10:39:26,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 10:39:26,808 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:39:26,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:39:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1686002742, now seen corresponding path program 1 times [2021-11-06 10:39:26,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:39:26,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809476742] [2021-11-06 10:39:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:39:26,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:39:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:39:28,694 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 10:39:28,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:39:28,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809476742] [2021-11-06 10:39:28,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809476742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:39:28,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:39:28,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 10:39:28,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377177827] [2021-11-06 10:39:28,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 10:39:28,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:39:28,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 10:39:28,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:39:28,695 INFO L87 Difference]: Start difference. First operand 1500 states and 1695 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 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 10:39:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:39:51,400 INFO L93 Difference]: Finished difference Result 2303 states and 2581 transitions. [2021-11-06 10:39:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-06 10:39:51,400 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 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 10:39:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:39:51,403 INFO L225 Difference]: With dead ends: 2303 [2021-11-06 10:39:51,403 INFO L226 Difference]: Without dead ends: 2019 [2021-11-06 10:39:51,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2021-11-06 10:39:51,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2021-11-06 10:39:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1533. [2021-11-06 10:39:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1520 states have (on average 1.138157894736842) internal successors, (1730), 1532 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:39:51,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 1730 transitions. [2021-11-06 10:39:51,460 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 1730 transitions. Word has length 96 [2021-11-06 10:39:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:39:51,460 INFO L470 AbstractCegarLoop]: Abstraction has 1533 states and 1730 transitions. [2021-11-06 10:39:51,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 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 10:39:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 1730 transitions. [2021-11-06 10:39:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 10:39:51,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:39:51,462 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 10:39:51,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-06 10:39:51,462 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:39:51,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:39:51,462 INFO L85 PathProgramCache]: Analyzing trace with hash -606083529, now seen corresponding path program 1 times [2021-11-06 10:39:51,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:39:51,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464064482] [2021-11-06 10:39:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:39:51,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:39:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:39:56,972 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 10:39:56,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:39:56,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464064482] [2021-11-06 10:39:56,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464064482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:39:56,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:39:56,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:39:56,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236679327] [2021-11-06 10:39:56,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:39:56,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:39:56,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:39:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:39:56,974 INFO L87 Difference]: Start difference. First operand 1533 states and 1730 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 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 10:40:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:15,386 INFO L93 Difference]: Finished difference Result 2053 states and 2284 transitions. [2021-11-06 10:40:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:40:15,387 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 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 10:40:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:15,389 INFO L225 Difference]: With dead ends: 2053 [2021-11-06 10:40:15,389 INFO L226 Difference]: Without dead ends: 1579 [2021-11-06 10:40:15,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-11-06 10:40:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-11-06 10:40:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1155. [2021-11-06 10:40:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1142 states have (on average 1.12784588441331) internal successors, (1288), 1154 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1288 transitions. [2021-11-06 10:40:15,433 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1288 transitions. Word has length 96 [2021-11-06 10:40:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:15,433 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1288 transitions. [2021-11-06 10:40:15,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 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 10:40:15,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1288 transitions. [2021-11-06 10:40:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:40:15,434 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:15,434 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] [2021-11-06 10:40:15,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-06 10:40:15,435 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:40:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1330967370, now seen corresponding path program 1 times [2021-11-06 10:40:15,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:15,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134142213] [2021-11-06 10:40:15,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:15,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:16,068 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 10:40:16,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:16,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134142213] [2021-11-06 10:40:16,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134142213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:16,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:16,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:40:16,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355684130] [2021-11-06 10:40:16,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:40:16,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:16,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:40:16,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:40:16,069 INFO L87 Difference]: Start difference. First operand 1155 states and 1288 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:27,141 INFO L93 Difference]: Finished difference Result 2573 states and 2875 transitions. [2021-11-06 10:40:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:40:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-06 10:40:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:27,144 INFO L225 Difference]: With dead ends: 2573 [2021-11-06 10:40:27,145 INFO L226 Difference]: Without dead ends: 2310 [2021-11-06 10:40:27,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:40:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-11-06 10:40:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1375. [2021-11-06 10:40:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1362 states have (on average 1.1255506607929515) internal successors, (1533), 1374 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1533 transitions. [2021-11-06 10:40:27,200 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1533 transitions. Word has length 98 [2021-11-06 10:40:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:27,200 INFO L470 AbstractCegarLoop]: Abstraction has 1375 states and 1533 transitions. [2021-11-06 10:40:27,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1533 transitions. [2021-11-06 10:40:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:40:27,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:27,202 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] [2021-11-06 10:40:27,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-06 10:40:27,202 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:40:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:27,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1072801932, now seen corresponding path program 1 times [2021-11-06 10:40:27,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:27,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900811350] [2021-11-06 10:40:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:27,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:28,085 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 10:40:28,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:28,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900811350] [2021-11-06 10:40:28,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900811350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:28,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:28,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:40:28,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869055457] [2021-11-06 10:40:28,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:40:28,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:28,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:40:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:40:28,087 INFO L87 Difference]: Start difference. First operand 1375 states and 1533 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:43,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:40:43,595 INFO L93 Difference]: Finished difference Result 3044 states and 3370 transitions. [2021-11-06 10:40:43,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-06 10:40:43,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-06 10:40:43,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:40:43,599 INFO L225 Difference]: With dead ends: 3044 [2021-11-06 10:40:43,599 INFO L226 Difference]: Without dead ends: 2816 [2021-11-06 10:40:43,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=513, Invalid=1649, Unknown=0, NotChecked=0, Total=2162 [2021-11-06 10:40:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-11-06 10:40:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1304. [2021-11-06 10:40:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1291 states have (on average 1.1239349341595661) internal successors, (1451), 1303 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:43,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1451 transitions. [2021-11-06 10:40:43,722 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1451 transitions. Word has length 98 [2021-11-06 10:40:43,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:40:43,722 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 1451 transitions. [2021-11-06 10:40:43,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:40:43,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1451 transitions. [2021-11-06 10:40:43,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:40:43,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:40:43,723 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] [2021-11-06 10:40:43,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-06 10:40:43,724 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:40:43,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:40:43,724 INFO L85 PathProgramCache]: Analyzing trace with hash 69565262, now seen corresponding path program 1 times [2021-11-06 10:40:43,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:40:43,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684978870] [2021-11-06 10:40:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:40:43,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:40:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:40:46,748 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 10:40:46,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:40:46,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684978870] [2021-11-06 10:40:46,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684978870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:40:46,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:40:46,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 10:40:46,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846041000] [2021-11-06 10:40:46,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:40:46,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:40:46,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:40:46,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:40:46,750 INFO L87 Difference]: Start difference. First operand 1304 states and 1451 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:05,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:41:05,661 INFO L93 Difference]: Finished difference Result 1612 states and 1781 transitions. [2021-11-06 10:41:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-06 10:41:05,661 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-06 10:41:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:41:05,663 INFO L225 Difference]: With dead ends: 1612 [2021-11-06 10:41:05,663 INFO L226 Difference]: Without dead ends: 1431 [2021-11-06 10:41:05,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2021-11-06 10:41:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-11-06 10:41:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1229. [2021-11-06 10:41:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1216 states have (on average 1.1233552631578947) internal successors, (1366), 1228 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1366 transitions. [2021-11-06 10:41:05,712 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1366 transitions. Word has length 98 [2021-11-06 10:41:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:41:05,712 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1366 transitions. [2021-11-06 10:41:05,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1366 transitions. [2021-11-06 10:41:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 10:41:05,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:41:05,714 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:41:05,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-06 10:41:05,714 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:41:05,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:41:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1478558085, now seen corresponding path program 1 times [2021-11-06 10:41:05,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:41:05,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983483779] [2021-11-06 10:41:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:41:05,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:41:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:41:09,691 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 10:41:09,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:41:09,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983483779] [2021-11-06 10:41:09,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983483779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:41:09,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:41:09,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:41:09,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15201174] [2021-11-06 10:41:09,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:41:09,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:41:09,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:41:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:41:09,693 INFO L87 Difference]: Start difference. First operand 1229 states and 1366 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:41:15,385 INFO L93 Difference]: Finished difference Result 1585 states and 1757 transitions. [2021-11-06 10:41:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:41:15,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-06 10:41:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:41:15,387 INFO L225 Difference]: With dead ends: 1585 [2021-11-06 10:41:15,387 INFO L226 Difference]: Without dead ends: 1324 [2021-11-06 10:41:15,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:41:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-11-06 10:41:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 926. [2021-11-06 10:41:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 913 states have (on average 1.1073384446878423) internal successors, (1011), 925 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 10:41:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1011 transitions. [2021-11-06 10:41:15,425 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1011 transitions. Word has length 99 [2021-11-06 10:41:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:41:15,425 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1011 transitions. [2021-11-06 10:41:15,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1011 transitions. [2021-11-06 10:41:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 10:41:15,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:41:15,426 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] [2021-11-06 10:41:15,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-06 10:41:15,427 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:41:15,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:41:15,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1329006131, now seen corresponding path program 1 times [2021-11-06 10:41:15,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:41:15,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987297199] [2021-11-06 10:41:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:41:15,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:41:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:41:16,248 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 10:41:16,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:41:16,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987297199] [2021-11-06 10:41:16,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987297199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:41:16,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:41:16,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:41:16,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184798062] [2021-11-06 10:41:16,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:41:16,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:41:16,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:41:16,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:41:16,251 INFO L87 Difference]: Start difference. First operand 926 states and 1011 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:26,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:41:26,788 INFO L93 Difference]: Finished difference Result 1034 states and 1119 transitions. [2021-11-06 10:41:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:41:26,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-06 10:41:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:41:26,790 INFO L225 Difference]: With dead ends: 1034 [2021-11-06 10:41:26,790 INFO L226 Difference]: Without dead ends: 866 [2021-11-06 10:41:26,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:41:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-11-06 10:41:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 812. [2021-11-06 10:41:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 799 states have (on average 1.1113892365456821) internal successors, (888), 811 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 888 transitions. [2021-11-06 10:41:26,828 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 888 transitions. Word has length 99 [2021-11-06 10:41:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:41:26,832 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 888 transitions. [2021-11-06 10:41:26,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:26,845 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 888 transitions. [2021-11-06 10:41:26,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 10:41:26,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:41:26,847 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] [2021-11-06 10:41:26,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-06 10:41:26,847 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:41:26,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:41:26,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1397652545, now seen corresponding path program 1 times [2021-11-06 10:41:26,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:41:26,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572339532] [2021-11-06 10:41:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:41:26,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:41:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:41:31,798 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 10:41:31,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:41:31,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572339532] [2021-11-06 10:41:31,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572339532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:41:31,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:41:31,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:41:31,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748075423] [2021-11-06 10:41:31,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:41:31,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:41:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:41:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:41:31,800 INFO L87 Difference]: Start difference. First operand 812 states and 888 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:41:42,197 INFO L93 Difference]: Finished difference Result 1003 states and 1097 transitions. [2021-11-06 10:41:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:41:42,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-06 10:41:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:41:42,199 INFO L225 Difference]: With dead ends: 1003 [2021-11-06 10:41:42,199 INFO L226 Difference]: Without dead ends: 651 [2021-11-06 10:41:42,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=247, Invalid=509, Unknown=0, NotChecked=0, Total=756 [2021-11-06 10:41:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-11-06 10:41:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 611. [2021-11-06 10:41:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 598 states have (on average 1.105351170568562) internal successors, (661), 610 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 661 transitions. [2021-11-06 10:41:42,225 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 661 transitions. Word has length 99 [2021-11-06 10:41:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:41:42,226 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 661 transitions. [2021-11-06 10:41:42,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:41:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 661 transitions. [2021-11-06 10:41:42,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 10:41:42,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:41:42,227 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] [2021-11-06 10:41:42,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-06 10:41:42,227 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:41:42,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:41:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1736857598, now seen corresponding path program 1 times [2021-11-06 10:41:42,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:41:42,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056963014] [2021-11-06 10:41:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:41:42,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:41:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:41:51,741 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 10:41:51,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:41:51,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056963014] [2021-11-06 10:41:51,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056963014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:41:51,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:41:51,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-06 10:41:51,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082896729] [2021-11-06 10:41:51,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-06 10:41:51,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:41:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-06 10:41:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:41:51,743 INFO L87 Difference]: Start difference. First operand 611 states and 661 transitions. Second operand has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:42:35,210 INFO L93 Difference]: Finished difference Result 1177 states and 1279 transitions. [2021-11-06 10:42:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 10:42:35,211 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-06 10:42:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:42:35,212 INFO L225 Difference]: With dead ends: 1177 [2021-11-06 10:42:35,212 INFO L226 Difference]: Without dead ends: 1033 [2021-11-06 10:42:35,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=608, Invalid=1648, Unknown=0, NotChecked=0, Total=2256 [2021-11-06 10:42:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-11-06 10:42:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 884. [2021-11-06 10:42:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 871 states have (on average 1.1090700344431688) internal successors, (966), 883 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 966 transitions. [2021-11-06 10:42:35,258 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 966 transitions. Word has length 101 [2021-11-06 10:42:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:42:35,258 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 966 transitions. [2021-11-06 10:42:35,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 966 transitions. [2021-11-06 10:42:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 10:42:35,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:42:35,259 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 10:42:35,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-06 10:42:35,259 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:42:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:42:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1314375689, now seen corresponding path program 1 times [2021-11-06 10:42:35,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:42:35,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800774126] [2021-11-06 10:42:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:42:35,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:42:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:42:39,254 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 10:42:39,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:42:39,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800774126] [2021-11-06 10:42:39,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800774126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:42:39,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:42:39,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:42:39,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022970195] [2021-11-06 10:42:39,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:42:39,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:42:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:42:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:42:39,255 INFO L87 Difference]: Start difference. First operand 884 states and 966 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 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 10:42:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:42:57,767 INFO L93 Difference]: Finished difference Result 1591 states and 1744 transitions. [2021-11-06 10:42:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-06 10:42:57,767 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 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 10:42:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:42:57,769 INFO L225 Difference]: With dead ends: 1591 [2021-11-06 10:42:57,769 INFO L226 Difference]: Without dead ends: 1587 [2021-11-06 10:42:57,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=526, Invalid=1636, Unknown=0, NotChecked=0, Total=2162 [2021-11-06 10:42:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-06 10:42:57,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1127. [2021-11-06 10:42:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1114 states have (on average 1.1166965888689409) internal successors, (1244), 1126 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:42:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1244 transitions. [2021-11-06 10:42:57,830 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1244 transitions. Word has length 103 [2021-11-06 10:42:57,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:42:57,830 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1244 transitions. [2021-11-06 10:42:57,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 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 10:42:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1244 transitions. [2021-11-06 10:42:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 10:42:57,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:42:57,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:42:57,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-06 10:42:57,832 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:42:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:42:57,832 INFO L85 PathProgramCache]: Analyzing trace with hash 212738741, now seen corresponding path program 1 times [2021-11-06 10:42:57,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:42:57,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627717307] [2021-11-06 10:42:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:42:57,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:42:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:43:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:43:00,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:43:00,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627717307] [2021-11-06 10:43:00,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627717307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:43:00,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:43:00,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:43:00,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802174137] [2021-11-06 10:43:00,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:43:00,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:43:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:43:00,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:43:00,590 INFO L87 Difference]: Start difference. First operand 1127 states and 1244 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:43:18,682 INFO L93 Difference]: Finished difference Result 1645 states and 1787 transitions. [2021-11-06 10:43:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-06 10:43:18,683 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-06 10:43:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:43:18,684 INFO L225 Difference]: With dead ends: 1645 [2021-11-06 10:43:18,684 INFO L226 Difference]: Without dead ends: 1643 [2021-11-06 10:43:18,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-11-06 10:43:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-06 10:43:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1220. [2021-11-06 10:43:18,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1207 states have (on average 1.1176470588235294) internal successors, (1349), 1219 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1349 transitions. [2021-11-06 10:43:18,770 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1349 transitions. Word has length 105 [2021-11-06 10:43:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:43:18,770 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1349 transitions. [2021-11-06 10:43:18,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1349 transitions. [2021-11-06 10:43:18,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 10:43:18,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:43:18,772 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] [2021-11-06 10:43:18,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-06 10:43:18,772 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:43:18,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:43:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash 195340878, now seen corresponding path program 1 times [2021-11-06 10:43:18,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:43:18,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933324251] [2021-11-06 10:43:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:43:18,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:43:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:43:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:43:23,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:43:23,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933324251] [2021-11-06 10:43:23,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933324251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:43:23,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:43:23,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:43:23,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849688836] [2021-11-06 10:43:23,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:43:23,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:43:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:43:23,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:43:23,103 INFO L87 Difference]: Start difference. First operand 1220 states and 1349 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:36,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:43:36,050 INFO L93 Difference]: Finished difference Result 1672 states and 1856 transitions. [2021-11-06 10:43:36,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:43:36,051 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-06 10:43:36,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:43:36,052 INFO L225 Difference]: With dead ends: 1672 [2021-11-06 10:43:36,052 INFO L226 Difference]: Without dead ends: 1320 [2021-11-06 10:43:36,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:43:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-11-06 10:43:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1220. [2021-11-06 10:43:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1207 states have (on average 1.1126760563380282) internal successors, (1343), 1219 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1343 transitions. [2021-11-06 10:43:36,119 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1343 transitions. Word has length 105 [2021-11-06 10:43:36,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:43:36,120 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1343 transitions. [2021-11-06 10:43:36,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1343 transitions. [2021-11-06 10:43:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 10:43:36,124 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:43:36,125 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] [2021-11-06 10:43:36,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-06 10:43:36,126 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:43:36,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:43:36,127 INFO L85 PathProgramCache]: Analyzing trace with hash -948228409, now seen corresponding path program 1 times [2021-11-06 10:43:36,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:43:36,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857668590] [2021-11-06 10:43:36,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:43:36,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:43:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:43:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:43:36,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:43:36,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857668590] [2021-11-06 10:43:36,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857668590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:43:36,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:43:36,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:43:36,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418789144] [2021-11-06 10:43:36,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:43:36,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:43:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:43:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:43:36,742 INFO L87 Difference]: Start difference. First operand 1220 states and 1343 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:43:40,861 INFO L93 Difference]: Finished difference Result 1591 states and 1760 transitions. [2021-11-06 10:43:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:43:40,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-11-06 10:43:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:43:40,863 INFO L225 Difference]: With dead ends: 1591 [2021-11-06 10:43:40,863 INFO L226 Difference]: Without dead ends: 1587 [2021-11-06 10:43:40,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:43:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-06 10:43:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1197. [2021-11-06 10:43:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1185 states have (on average 1.109704641350211) internal successors, (1315), 1196 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1315 transitions. [2021-11-06 10:43:40,952 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1315 transitions. Word has length 107 [2021-11-06 10:43:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:43:40,952 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1315 transitions. [2021-11-06 10:43:40,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1315 transitions. [2021-11-06 10:43:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 10:43:40,953 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:43:40,953 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:43:40,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-06 10:43:40,954 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:43:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:43:40,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1150084859, now seen corresponding path program 1 times [2021-11-06 10:43:40,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:43:40,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926198245] [2021-11-06 10:43:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:43:40,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:43:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:43:41,932 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 10:43:41,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:43:41,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926198245] [2021-11-06 10:43:41,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926198245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:43:41,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:43:41,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:43:41,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786218400] [2021-11-06 10:43:41,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:43:41,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:43:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:43:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:43:41,934 INFO L87 Difference]: Start difference. First operand 1197 states and 1315 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:43:48,448 INFO L93 Difference]: Finished difference Result 3232 states and 3603 transitions. [2021-11-06 10:43:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:43:48,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 10:43:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:43:48,451 INFO L225 Difference]: With dead ends: 3232 [2021-11-06 10:43:48,451 INFO L226 Difference]: Without dead ends: 2806 [2021-11-06 10:43:48,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:43:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2021-11-06 10:43:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 1232. [2021-11-06 10:43:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1220 states have (on average 1.1057377049180328) internal successors, (1349), 1231 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1349 transitions. [2021-11-06 10:43:48,532 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1349 transitions. Word has length 108 [2021-11-06 10:43:48,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:43:48,547 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1349 transitions. [2021-11-06 10:43:48,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:43:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1349 transitions. [2021-11-06 10:43:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 10:43:48,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:43:48,549 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 10:43:48,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-06 10:43:48,549 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:43:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:43:48,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1961551642, now seen corresponding path program 1 times [2021-11-06 10:43:48,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:43:48,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433971326] [2021-11-06 10:43:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:43:48,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:43:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:43:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:43:50,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:43:50,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433971326] [2021-11-06 10:43:50,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433971326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:43:50,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:43:50,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:43:50,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256476234] [2021-11-06 10:43:50,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:43:50,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:43:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:43:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:43:50,508 INFO L87 Difference]: Start difference. First operand 1232 states and 1349 transitions. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 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 10:44:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:44:20,963 INFO L93 Difference]: Finished difference Result 1765 states and 1935 transitions. [2021-11-06 10:44:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 10:44:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 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 10:44:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:44:20,964 INFO L225 Difference]: With dead ends: 1765 [2021-11-06 10:44:20,965 INFO L226 Difference]: Without dead ends: 930 [2021-11-06 10:44:20,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 10:44:20,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-11-06 10:44:21,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 852. [2021-11-06 10:44:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 840 states have (on average 1.0976190476190477) internal successors, (922), 851 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:44:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 922 transitions. [2021-11-06 10:44:21,011 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 922 transitions. Word has length 110 [2021-11-06 10:44:21,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:44:21,011 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 922 transitions. [2021-11-06 10:44:21,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 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 10:44:21,011 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 922 transitions. [2021-11-06 10:44:21,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:44:21,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:44:21,012 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:44:21,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-06 10:44:21,013 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:44:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:44:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash -494130780, now seen corresponding path program 1 times [2021-11-06 10:44:21,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:44:21,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026200996] [2021-11-06 10:44:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:44:21,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:44:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:44:22,750 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 10:44:22,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:44:22,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026200996] [2021-11-06 10:44:22,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026200996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:44:22,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:44:22,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:44:22,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444709940] [2021-11-06 10:44:22,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:44:22,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:44:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:44:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:44:22,752 INFO L87 Difference]: Start difference. First operand 852 states and 922 transitions. Second operand has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:44:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:44:34,987 INFO L93 Difference]: Finished difference Result 1709 states and 1860 transitions. [2021-11-06 10:44:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-06 10:44:34,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-06 10:44:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:44:34,989 INFO L225 Difference]: With dead ends: 1709 [2021-11-06 10:44:34,989 INFO L226 Difference]: Without dead ends: 1535 [2021-11-06 10:44:34,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 10:44:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-11-06 10:44:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 944. [2021-11-06 10:44:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 932 states have (on average 1.0879828326180256) internal successors, (1014), 943 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:44:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1014 transitions. [2021-11-06 10:44:35,046 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1014 transitions. Word has length 122 [2021-11-06 10:44:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:44:35,046 INFO L470 AbstractCegarLoop]: Abstraction has 944 states and 1014 transitions. [2021-11-06 10:44:35,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:44:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1014 transitions. [2021-11-06 10:44:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:44:35,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:44:35,048 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:44:35,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-06 10:44:35,048 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:44:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:44:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash -70484058, now seen corresponding path program 1 times [2021-11-06 10:44:35,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:44:35,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359429056] [2021-11-06 10:44:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:44:35,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:44:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:44:37,495 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 10:44:37,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:44:37,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359429056] [2021-11-06 10:44:37,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359429056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:44:37,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:44:37,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-06 10:44:37,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835817470] [2021-11-06 10:44:37,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-06 10:44:37,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:44:37,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-06 10:44:37,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:44:37,496 INFO L87 Difference]: Start difference. First operand 944 states and 1014 transitions. Second operand has 21 states, 21 states have (on average 5.809523809523809) internal successors, (122), 21 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:45:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:45:00,177 INFO L93 Difference]: Finished difference Result 1612 states and 1737 transitions. [2021-11-06 10:45:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-06 10:45:00,178 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.809523809523809) internal successors, (122), 21 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-06 10:45:00,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:45:00,179 INFO L225 Difference]: With dead ends: 1612 [2021-11-06 10:45:00,179 INFO L226 Difference]: Without dead ends: 1281 [2021-11-06 10:45:00,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=425, Invalid=1135, Unknown=0, NotChecked=0, Total=1560 [2021-11-06 10:45:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-11-06 10:45:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1114. [2021-11-06 10:45:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1102 states have (on average 1.0907441016333939) internal successors, (1202), 1113 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:45:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1202 transitions. [2021-11-06 10:45:00,242 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1202 transitions. Word has length 122 [2021-11-06 10:45:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:45:00,242 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 1202 transitions. [2021-11-06 10:45:00,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.809523809523809) internal successors, (122), 21 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:45:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1202 transitions. [2021-11-06 10:45:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 10:45:00,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:45:00,243 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:45:00,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-06 10:45:00,244 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:45:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:45:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash 768549604, now seen corresponding path program 1 times [2021-11-06 10:45:00,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:45:00,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926428045] [2021-11-06 10:45:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:45:00,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:45:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:45:07,571 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 10:45:07,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:45:07,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926428045] [2021-11-06 10:45:07,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926428045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:45:07,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:45:07,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-06 10:45:07,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996752300] [2021-11-06 10:45:07,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-06 10:45:07,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:45:07,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-06 10:45:07,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-11-06 10:45:07,572 INFO L87 Difference]: Start difference. First operand 1114 states and 1202 transitions. Second operand has 23 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:45:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:45:43,626 INFO L93 Difference]: Finished difference Result 1405 states and 1501 transitions. [2021-11-06 10:45:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-06 10:45:43,626 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-06 10:45:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:45:43,628 INFO L225 Difference]: With dead ends: 1405 [2021-11-06 10:45:43,628 INFO L226 Difference]: Without dead ends: 1287 [2021-11-06 10:45:43,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=726, Invalid=2136, Unknown=0, NotChecked=0, Total=2862 [2021-11-06 10:45:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-11-06 10:45:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 903. [2021-11-06 10:45:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 891 states have (on average 1.0886644219977553) internal successors, (970), 902 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:45:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 970 transitions. [2021-11-06 10:45:43,681 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 970 transitions. Word has length 122 [2021-11-06 10:45:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:45:43,681 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 970 transitions. [2021-11-06 10:45:43,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:45:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 970 transitions. [2021-11-06 10:45:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 10:45:43,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:45:43,682 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, 1, 1, 1, 1, 1, 1] [2021-11-06 10:45:43,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-06 10:45:43,683 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:45:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:45:43,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2105526243, now seen corresponding path program 1 times [2021-11-06 10:45:43,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:45:43,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961640899] [2021-11-06 10:45:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:45:43,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:45:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:45:45,853 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 10:45:45,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:45:45,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961640899] [2021-11-06 10:45:45,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961640899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:45:45,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:45:45,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 10:45:45,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436661178] [2021-11-06 10:45:45,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 10:45:45,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:45:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 10:45:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:45:45,855 INFO L87 Difference]: Start difference. First operand 903 states and 970 transitions. Second operand has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 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 10:46:18,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:46:18,680 INFO L93 Difference]: Finished difference Result 1369 states and 1465 transitions. [2021-11-06 10:46:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 10:46:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 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 10:46:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:46:18,681 INFO L225 Difference]: With dead ends: 1369 [2021-11-06 10:46:18,681 INFO L226 Difference]: Without dead ends: 1177 [2021-11-06 10:46:18,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2021-11-06 10:46:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-06 10:46:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1030. [2021-11-06 10:46:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1018 states have (on average 1.0884086444007859) internal successors, (1108), 1029 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:46:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1108 transitions. [2021-11-06 10:46:18,744 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1108 transitions. Word has length 124 [2021-11-06 10:46:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:46:18,744 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 1108 transitions. [2021-11-06 10:46:18,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 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 10:46:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1108 transitions. [2021-11-06 10:46:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 10:46:18,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:46:18,746 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 10:46:18,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-06 10:46:18,746 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:46:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:46:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1046938587, now seen corresponding path program 1 times [2021-11-06 10:46:18,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:46:18,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176716265] [2021-11-06 10:46:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:46:18,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:46:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:46:20,138 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 10:46:20,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:46:20,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176716265] [2021-11-06 10:46:20,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176716265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:46:20,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:46:20,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:46:20,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498907912] [2021-11-06 10:46:20,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:46:20,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:46:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:46:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:46:20,140 INFO L87 Difference]: Start difference. First operand 1030 states and 1108 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 10:46:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:46:36,126 INFO L93 Difference]: Finished difference Result 1914 states and 2074 transitions. [2021-11-06 10:46:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 10:46:36,127 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 10:46:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:46:36,129 INFO L225 Difference]: With dead ends: 1914 [2021-11-06 10:46:36,129 INFO L226 Difference]: Without dead ends: 1664 [2021-11-06 10:46:36,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2021-11-06 10:46:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-11-06 10:46:36,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1128. [2021-11-06 10:46:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1116 states have (on average 1.0797491039426523) internal successors, (1205), 1127 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:46:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1205 transitions. [2021-11-06 10:46:36,198 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1205 transitions. Word has length 124 [2021-11-06 10:46:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:46:36,199 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 1205 transitions. [2021-11-06 10:46:36,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 10:46:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1205 transitions. [2021-11-06 10:46:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 10:46:36,200 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:46:36,200 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 10:46:36,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-06 10:46:36,201 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:46:36,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:46:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash 149545309, now seen corresponding path program 1 times [2021-11-06 10:46:36,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:46:36,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894731833] [2021-11-06 10:46:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:46:36,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:46:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:46:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:46:40,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:46:40,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894731833] [2021-11-06 10:46:40,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894731833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:46:40,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:46:40,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:46:40,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712814808] [2021-11-06 10:46:40,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:46:40,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:46:40,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:46:40,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:46:40,400 INFO L87 Difference]: Start difference. First operand 1128 states and 1205 transitions. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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 10:46:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:46:56,216 INFO L93 Difference]: Finished difference Result 1451 states and 1542 transitions. [2021-11-06 10:46:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 10:46:56,217 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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 10:46:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:46:56,218 INFO L225 Difference]: With dead ends: 1451 [2021-11-06 10:46:56,218 INFO L226 Difference]: Without dead ends: 1259 [2021-11-06 10:46:56,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 10:46:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-06 10:46:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1056. [2021-11-06 10:46:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1044 states have (on average 1.0795019157088122) internal successors, (1127), 1055 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:46:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1127 transitions. [2021-11-06 10:46:56,280 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1127 transitions. Word has length 124 [2021-11-06 10:46:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:46:56,280 INFO L470 AbstractCegarLoop]: Abstraction has 1056 states and 1127 transitions. [2021-11-06 10:46:56,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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 10:46:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1127 transitions. [2021-11-06 10:46:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 10:46:56,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:46:56,282 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, 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 10:46:56,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-06 10:46:56,282 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:46:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:46:56,282 INFO L85 PathProgramCache]: Analyzing trace with hash -120300828, now seen corresponding path program 1 times [2021-11-06 10:46:56,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:46:56,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663459343] [2021-11-06 10:46:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:46:56,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:47:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:47:07,895 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 10:47:07,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:47:07,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663459343] [2021-11-06 10:47:07,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663459343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:47:07,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:47:07,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-06 10:47:07,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794400285] [2021-11-06 10:47:07,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-06 10:47:07,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:47:07,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-06 10:47:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2021-11-06 10:47:07,896 INFO L87 Difference]: Start difference. First operand 1056 states and 1127 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:47:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:47:23,849 INFO L93 Difference]: Finished difference Result 1176 states and 1258 transitions. [2021-11-06 10:47:23,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-06 10:47:23,849 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-06 10:47:23,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:47:23,850 INFO L225 Difference]: With dead ends: 1176 [2021-11-06 10:47:23,850 INFO L226 Difference]: Without dead ends: 1059 [2021-11-06 10:47:23,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=546, Invalid=1616, Unknown=0, NotChecked=0, Total=2162 [2021-11-06 10:47:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2021-11-06 10:47:23,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1037. [2021-11-06 10:47:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 1026 states have (on average 1.0760233918128654) internal successors, (1104), 1036 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:47:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1104 transitions. [2021-11-06 10:47:23,927 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1104 transitions. Word has length 125 [2021-11-06 10:47:23,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:47:23,928 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 1104 transitions. [2021-11-06 10:47:23,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:47:23,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1104 transitions. [2021-11-06 10:47:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-06 10:47:23,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:47:23,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:47:23,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-06 10:47:23,930 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:47:23,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:47:23,930 INFO L85 PathProgramCache]: Analyzing trace with hash -719755921, now seen corresponding path program 1 times [2021-11-06 10:47:23,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:47:23,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240288557] [2021-11-06 10:47:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:47:23,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:47:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:47:24,184 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 10:47:24,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:47:24,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240288557] [2021-11-06 10:47:24,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240288557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:47:24,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:47:24,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:47:24,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871967488] [2021-11-06 10:47:24,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:47:24,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:47:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:47:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:47:24,186 INFO L87 Difference]: Start difference. First operand 1037 states and 1104 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:47:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:47:24,411 INFO L93 Difference]: Finished difference Result 1552 states and 1676 transitions. [2021-11-06 10:47:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:47:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-06 10:47:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:47:24,413 INFO L225 Difference]: With dead ends: 1552 [2021-11-06 10:47:24,413 INFO L226 Difference]: Without dead ends: 1384 [2021-11-06 10:47:24,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:47:24,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-11-06 10:47:24,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1169. [2021-11-06 10:47:24,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1158 states have (on average 1.0656303972366148) internal successors, (1234), 1168 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:47:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1234 transitions. [2021-11-06 10:47:24,493 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1234 transitions. Word has length 126 [2021-11-06 10:47:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:47:24,494 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1234 transitions. [2021-11-06 10:47:24,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:47:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1234 transitions. [2021-11-06 10:47:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 10:47:24,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:47:24,504 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 10:47:24,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-06 10:47:24,504 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:47:24,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:47:24,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1624365142, now seen corresponding path program 1 times [2021-11-06 10:47:24,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:47:24,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658245393] [2021-11-06 10:47:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:47:24,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:47:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:47:29,574 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 10:47:29,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:47:29,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658245393] [2021-11-06 10:47:29,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658245393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:47:29,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:47:29,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:47:29,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032912548] [2021-11-06 10:47:29,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:47:29,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:47:29,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:47:29,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:47:29,575 INFO L87 Difference]: Start difference. First operand 1169 states and 1234 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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 10:47:37,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:47:37,317 INFO L93 Difference]: Finished difference Result 1304 states and 1374 transitions. [2021-11-06 10:47:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:47:37,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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 10:47:37,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:47:37,319 INFO L225 Difference]: With dead ends: 1304 [2021-11-06 10:47:37,319 INFO L226 Difference]: Without dead ends: 1259 [2021-11-06 10:47:37,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:47:37,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-06 10:47:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1176. [2021-11-06 10:47:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1165 states have (on average 1.065236051502146) internal successors, (1241), 1175 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:47:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1241 transitions. [2021-11-06 10:47:37,397 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1241 transitions. Word has length 129 [2021-11-06 10:47:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:47:37,397 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 1241 transitions. [2021-11-06 10:47:37,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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 10:47:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1241 transitions. [2021-11-06 10:47:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 10:47:37,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:47:37,399 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 10:47:37,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-06 10:47:37,400 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:47:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:47:37,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1609008045, now seen corresponding path program 1 times [2021-11-06 10:47:37,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:47:37,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200091294] [2021-11-06 10:47:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:47:37,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:47:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:47:39,159 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 10:47:39,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:47:39,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200091294] [2021-11-06 10:47:39,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200091294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:47:39,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:47:39,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:47:39,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147470833] [2021-11-06 10:47:39,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:47:39,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:47:39,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:47:39,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:47:39,161 INFO L87 Difference]: Start difference. First operand 1176 states and 1241 transitions. Second operand has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 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 10:48:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:48:00,051 INFO L93 Difference]: Finished difference Result 1853 states and 1976 transitions. [2021-11-06 10:48:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 10:48:00,052 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 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 10:48:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:48:00,053 INFO L225 Difference]: With dead ends: 1853 [2021-11-06 10:48:00,053 INFO L226 Difference]: Without dead ends: 1373 [2021-11-06 10:48:00,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=346, Invalid=844, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 10:48:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2021-11-06 10:48:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 904. [2021-11-06 10:48:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 893 states have (on average 1.0627099664053752) internal successors, (949), 903 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 10:48:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 949 transitions. [2021-11-06 10:48:00,125 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 949 transitions. Word has length 129 [2021-11-06 10:48:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:48:00,125 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 949 transitions. [2021-11-06 10:48:00,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 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 10:48:00,126 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 949 transitions. [2021-11-06 10:48:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 10:48:00,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:48:00,127 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 10:48:00,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-06 10:48:00,127 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:48:00,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:48:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash -463545121, now seen corresponding path program 1 times [2021-11-06 10:48:00,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:48:00,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162760929] [2021-11-06 10:48:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:48:00,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:48:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:48:01,831 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 10:48:01,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:48:01,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162760929] [2021-11-06 10:48:01,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162760929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:48:01,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:48:01,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:48:01,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368935533] [2021-11-06 10:48:01,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:48:01,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:48:01,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:48:01,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:48:01,833 INFO L87 Difference]: Start difference. First operand 904 states and 949 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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 10:48:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:48:12,255 INFO L93 Difference]: Finished difference Result 1210 states and 1282 transitions. [2021-11-06 10:48:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:48:12,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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 10:48:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:48:12,256 INFO L225 Difference]: With dead ends: 1210 [2021-11-06 10:48:12,256 INFO L226 Difference]: Without dead ends: 1031 [2021-11-06 10:48:12,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:48:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-11-06 10:48:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 904. [2021-11-06 10:48:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 893 states have (on average 1.057110862262038) internal successors, (944), 903 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 944 transitions. [2021-11-06 10:48:12,316 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 944 transitions. Word has length 129 [2021-11-06 10:48:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:48:12,316 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 944 transitions. [2021-11-06 10:48:12,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 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 10:48:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 944 transitions. [2021-11-06 10:48:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 10:48:12,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:48:12,318 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 10:48:12,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-06 10:48:12,318 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:48:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:48:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash -205379683, now seen corresponding path program 1 times [2021-11-06 10:48:12,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:48:12,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633638952] [2021-11-06 10:48:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:48:12,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:48:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:48:15,724 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 10:48:15,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:48:15,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633638952] [2021-11-06 10:48:15,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633638952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:48:15,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:48:15,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:48:15,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086519242] [2021-11-06 10:48:15,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:48:15,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:48:15,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:48:15,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:48:15,725 INFO L87 Difference]: Start difference. First operand 904 states and 944 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 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 10:48:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:48:21,035 INFO L93 Difference]: Finished difference Result 1050 states and 1103 transitions. [2021-11-06 10:48:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:48:21,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 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 10:48:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:48:21,037 INFO L225 Difference]: With dead ends: 1050 [2021-11-06 10:48:21,037 INFO L226 Difference]: Without dead ends: 1048 [2021-11-06 10:48:21,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:48:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-06 10:48:21,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 902. [2021-11-06 10:48:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 892 states have (on average 1.054932735426009) internal successors, (941), 901 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 10:48:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 941 transitions. [2021-11-06 10:48:21,093 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 941 transitions. Word has length 129 [2021-11-06 10:48:21,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:48:21,093 INFO L470 AbstractCegarLoop]: Abstraction has 902 states and 941 transitions. [2021-11-06 10:48:21,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 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 10:48:21,094 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 941 transitions. [2021-11-06 10:48:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 10:48:21,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:48:21,095 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] [2021-11-06 10:48:21,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-06 10:48:21,097 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:48:21,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:48:21,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1866546561, now seen corresponding path program 1 times [2021-11-06 10:48:21,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:48:21,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490670164] [2021-11-06 10:48:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:48:21,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:48:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:48:26,777 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 10:48:26,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:48:26,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490670164] [2021-11-06 10:48:26,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490670164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:48:26,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:48:26,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 10:48:26,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694113718] [2021-11-06 10:48:26,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:48:26,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:48:26,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:48:26,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:48:26,778 INFO L87 Difference]: Start difference. First operand 902 states and 941 transitions. Second operand has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:48:42,693 INFO L93 Difference]: Finished difference Result 972 states and 1011 transitions. [2021-11-06 10:48:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:48:42,694 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-06 10:48:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:48:42,695 INFO L225 Difference]: With dead ends: 972 [2021-11-06 10:48:42,695 INFO L226 Difference]: Without dead ends: 747 [2021-11-06 10:48:42,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2021-11-06 10:48:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-06 10:48:42,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 735. [2021-11-06 10:48:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 725 states have (on average 1.0524137931034483) internal successors, (763), 734 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 763 transitions. [2021-11-06 10:48:42,771 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 763 transitions. Word has length 132 [2021-11-06 10:48:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:48:42,771 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 763 transitions. [2021-11-06 10:48:42,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 763 transitions. [2021-11-06 10:48:42,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-06 10:48:42,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:48:42,773 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:48:42,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-06 10:48:42,773 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:48:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:48:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash 287316514, now seen corresponding path program 1 times [2021-11-06 10:48:42,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:48:42,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029050077] [2021-11-06 10:48:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:48:42,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:48:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:48:43,555 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 10:48:43,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:48:43,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029050077] [2021-11-06 10:48:43,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029050077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:48:43,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:48:43,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:48:43,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919532966] [2021-11-06 10:48:43,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:48:43,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:48:43,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:48:43,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:48:43,556 INFO L87 Difference]: Start difference. First operand 735 states and 763 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:46,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:48:46,667 INFO L93 Difference]: Finished difference Result 902 states and 937 transitions. [2021-11-06 10:48:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:48:46,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-06 10:48:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:48:46,668 INFO L225 Difference]: With dead ends: 902 [2021-11-06 10:48:46,668 INFO L226 Difference]: Without dead ends: 873 [2021-11-06 10:48:46,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:48:46,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-11-06 10:48:46,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 801. [2021-11-06 10:48:46,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 791 states have (on average 1.056890012642225) internal successors, (836), 800 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 836 transitions. [2021-11-06 10:48:46,720 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 836 transitions. Word has length 134 [2021-11-06 10:48:46,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:48:46,720 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 836 transitions. [2021-11-06 10:48:46,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:46,720 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 836 transitions. [2021-11-06 10:48:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 10:48:46,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:48:46,721 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:48:46,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-06 10:48:46,721 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:48:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:48:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 334026701, now seen corresponding path program 1 times [2021-11-06 10:48:46,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:48:46,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997408279] [2021-11-06 10:48:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:48:46,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:48:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:48:47,110 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 10:48:47,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:48:47,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997408279] [2021-11-06 10:48:47,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997408279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:48:47,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:48:47,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:48:47,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671595500] [2021-11-06 10:48:47,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:48:47,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:48:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:48:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:48:47,112 INFO L87 Difference]: Start difference. First operand 801 states and 836 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:48:47,504 INFO L93 Difference]: Finished difference Result 801 states and 836 transitions. [2021-11-06 10:48:47,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:48:47,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-11-06 10:48:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:48:47,505 INFO L225 Difference]: With dead ends: 801 [2021-11-06 10:48:47,505 INFO L226 Difference]: Without dead ends: 799 [2021-11-06 10:48:47,505 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 10:48:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-06 10:48:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2021-11-06 10:48:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 790 states have (on average 1.0556962025316456) internal successors, (834), 798 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 834 transitions. [2021-11-06 10:48:47,556 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 834 transitions. Word has length 135 [2021-11-06 10:48:47,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:48:47,556 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 834 transitions. [2021-11-06 10:48:47,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:48:47,556 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 834 transitions. [2021-11-06 10:48:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 10:48:47,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:48:47,557 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:48:47,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-06 10:48:47,557 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:48:47,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:48:47,558 INFO L85 PathProgramCache]: Analyzing trace with hash 286235341, now seen corresponding path program 1 times [2021-11-06 10:48:47,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:48:47,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18253710] [2021-11-06 10:48:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:48:47,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:48:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:48:54,318 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 10:48:54,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:48:54,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18253710] [2021-11-06 10:48:54,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18253710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:48:54,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:48:54,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:48:54,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043461733] [2021-11-06 10:48:54,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:48:54,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:48:54,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:48:54,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:48:54,320 INFO L87 Difference]: Start difference. First operand 799 states and 834 transitions. Second operand has 17 states, 17 states have (on average 7.9411764705882355) internal successors, (135), 17 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:49:13,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:49:13,082 INFO L93 Difference]: Finished difference Result 939 states and 980 transitions. [2021-11-06 10:49:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:49:13,083 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.9411764705882355) internal successors, (135), 17 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-11-06 10:49:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:49:13,084 INFO L225 Difference]: With dead ends: 939 [2021-11-06 10:49:13,084 INFO L226 Difference]: Without dead ends: 937 [2021-11-06 10:49:13,084 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:49:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-06 10:49:13,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 797. [2021-11-06 10:49:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 789 states have (on average 1.0544993662864386) internal successors, (832), 796 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:49:13,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 832 transitions. [2021-11-06 10:49:13,137 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 832 transitions. Word has length 135 [2021-11-06 10:49:13,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:49:13,138 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 832 transitions. [2021-11-06 10:49:13,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.9411764705882355) internal successors, (135), 17 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:49:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 832 transitions. [2021-11-06 10:49:13,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 10:49:13,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:49:13,139 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:49:13,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-06 10:49:13,139 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-06 10:49:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:49:13,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1122743345, now seen corresponding path program 1 times [2021-11-06 10:49:13,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:49:13,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626935414] [2021-11-06 10:49:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:49:13,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:49:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:49:14,548 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 10:49:14,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:49:14,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626935414] [2021-11-06 10:49:14,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626935414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:49:14,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:49:14,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:49:14,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34782723] [2021-11-06 10:49:14,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:49:14,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:49:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:49:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:49:14,550 INFO L87 Difference]: Start difference. First operand 797 states and 832 transitions. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15