./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_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 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:15:27,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:15:27,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:15:27,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:15:27,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:15:27,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:15:27,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:15:27,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:15:27,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:15:27,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:15:27,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:15:27,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:15:27,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:15:27,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:15:27,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:15:27,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:15:27,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:15:27,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:15:27,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:15:27,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:15:27,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:15:27,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:15:27,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:15:27,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:15:27,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:15:27,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:15:27,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:15:27,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:15:27,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:15:27,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:15:27,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:15:27,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:15:27,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:15:27,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:15:27,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:15:27,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:15:27,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:15:27,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:15:27,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:15:27,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:15:27,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:15:27,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:15:27,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:15:27,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:15:27,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:15:27,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:15:27,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:15:27,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:15:27,308 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:15:27,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:15:27,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:15:27,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:15:27,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:15:27,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:15:27,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:15:27,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:15:27,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:15:27,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:15:27,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:15:27,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:15:27,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:15:27,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:15:27,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:15:27,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:15:27,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:15:27,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:15:27,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:15:27,311 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:15:27,311 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:15:27,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:15:27,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:15:27,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 [2021-11-06 10:15:27,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:15:27,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:15:27,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:15:27,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:15:27,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:15:27,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2021-11-06 10:15:27,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908f283cc/a8f7047a610041fd8d3279197f3817fb/FLAG7730bdcda [2021-11-06 10:15:28,237 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:15:28,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2021-11-06 10:15:28,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908f283cc/a8f7047a610041fd8d3279197f3817fb/FLAG7730bdcda [2021-11-06 10:15:28,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908f283cc/a8f7047a610041fd8d3279197f3817fb [2021-11-06 10:15:28,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:15:28,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:15:28,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:15:28,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:15:28,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:15:28,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:28" (1/1) ... [2021-11-06 10:15:28,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6103e22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:28, skipping insertion in model container [2021-11-06 10:15:28,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:28" (1/1) ... [2021-11-06 10:15:28,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:15:28,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:15:28,693 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2021-11-06 10:15:28,700 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2021-11-06 10:15:28,719 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:15:28,725 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:15:29,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,240 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,240 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,241 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,471 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:15:29,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:15:29,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:15:29,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:15:29,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:15:29,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:15:29,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:15:29,476 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:15:29,476 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:15:29,477 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:15:29,586 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:15:29,680 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:15:29,783 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:15:29,802 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2021-11-06 10:15:29,804 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2021-11-06 10:15:29,806 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:15:29,808 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:15:29,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,842 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,842 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,842 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,843 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,855 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,855 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,887 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:15:29,888 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:15:29,888 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:15:29,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:15:29,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:15:29,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:15:29,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:15:29,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:15:29,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:15:29,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:15:29,911 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:15:29,955 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,955 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:15:29,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:15:30,130 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:15:30,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30 WrapperNode [2021-11-06 10:15:30,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:15:30,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:15:30,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:15:30,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:15:30,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:15:30,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:15:30,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:15:30,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:15:30,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:15:30,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:15:30,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:15:30,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:15:30,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ... [2021-11-06 10:15:30,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:15:30,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:15:30,489 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 10:15:30,514 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 10:15:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:15:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:15:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:15:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:15:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:15:30,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:15:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:15:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:15:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:15:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:15:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:15:38,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:15:38,479 INFO L299 CfgBuilder]: Removed 119 assume(true) statements. [2021-11-06 10:15:38,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:38 BoogieIcfgContainer [2021-11-06 10:15:38,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:15:38,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:15:38,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:15:38,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:15:38,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:15:28" (1/3) ... [2021-11-06 10:15:38,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6421959f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:38, skipping insertion in model container [2021-11-06 10:15:38,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (2/3) ... [2021-11-06 10:15:38,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6421959f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:38, skipping insertion in model container [2021-11-06 10:15:38,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:38" (3/3) ... [2021-11-06 10:15:38,487 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_ignore_case_harness.i [2021-11-06 10:15:38,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:15:38,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-06 10:15:38,524 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:15:38,529 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 10:15:38,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-06 10:15:38,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 235 states have (on average 1.4851063829787234) internal successors, (349), 250 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 10:15:38,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:38,556 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] [2021-11-06 10:15:38,556 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:15:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:38,564 INFO L85 PathProgramCache]: Analyzing trace with hash 825701746, now seen corresponding path program 1 times [2021-11-06 10:15:38,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:38,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657312353] [2021-11-06 10:15:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:38,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:39,093 INFO 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 10:15:39,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:39,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657312353] [2021-11-06 10:15:39,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657312353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:39,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:39,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:15:39,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134403418] [2021-11-06 10:15:39,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:15:39,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:39,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:15:39,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:15:39,110 INFO L87 Difference]: Start difference. First operand has 251 states, 235 states have (on average 1.4851063829787234) internal successors, (349), 250 states have internal predecessors, (349), 0 states have call successors, (0), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:39,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:39,137 INFO L93 Difference]: Finished difference Result 498 states and 693 transitions. [2021-11-06 10:15:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:15:39,138 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 10:15:39,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:39,146 INFO L225 Difference]: With dead ends: 498 [2021-11-06 10:15:39,146 INFO L226 Difference]: Without dead ends: 244 [2021-11-06 10:15:39,149 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 10:15:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-06 10:15:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-06 10:15:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 229 states have (on average 1.3580786026200873) internal successors, (311), 243 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 10:15:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 311 transitions. [2021-11-06 10:15:39,187 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 311 transitions. Word has length 44 [2021-11-06 10:15:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:39,188 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 311 transitions. [2021-11-06 10:15:39,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 311 transitions. [2021-11-06 10:15:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 10:15:39,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:39,190 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] [2021-11-06 10:15:39,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:15:39,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:15:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash -291371024, now seen corresponding path program 1 times [2021-11-06 10:15:39,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:39,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668552796] [2021-11-06 10:15:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:39,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:39,461 INFO 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 10:15:39,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:39,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668552796] [2021-11-06 10:15:39,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668552796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:39,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:39,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:15:39,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046355872] [2021-11-06 10:15:39,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:15:39,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:39,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:15:39,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:39,465 INFO L87 Difference]: Start difference. First operand 244 states and 311 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:39,734 INFO L93 Difference]: Finished difference Result 462 states and 588 transitions. [2021-11-06 10:15:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:15:39,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 10:15:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:39,736 INFO L225 Difference]: With dead ends: 462 [2021-11-06 10:15:39,736 INFO L226 Difference]: Without dead ends: 244 [2021-11-06 10:15:39,737 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 10:15:39,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-06 10:15:39,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-06 10:15:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 229 states have (on average 1.3449781659388647) internal successors, (308), 243 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 308 transitions. [2021-11-06 10:15:39,754 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 308 transitions. Word has length 44 [2021-11-06 10:15:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:39,754 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 308 transitions. [2021-11-06 10:15:39,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 308 transitions. [2021-11-06 10:15:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 10:15:39,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:39,758 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:39,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:15:39,758 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:15:39,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:39,759 INFO L85 PathProgramCache]: Analyzing trace with hash 913690504, now seen corresponding path program 1 times [2021-11-06 10:15:39,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:39,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143403135] [2021-11-06 10:15:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:39,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:40,024 INFO 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 10:15:40,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:40,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143403135] [2021-11-06 10:15:40,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143403135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:40,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:40,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:15:40,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073478277] [2021-11-06 10:15:40,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:15:40,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:40,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:15:40,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:40,026 INFO L87 Difference]: Start difference. First operand 244 states and 308 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:40,601 INFO L93 Difference]: Finished difference Result 543 states and 696 transitions. [2021-11-06 10:15:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:15:40,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-06 10:15:40,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:40,603 INFO L225 Difference]: With dead ends: 543 [2021-11-06 10:15:40,603 INFO L226 Difference]: Without dead ends: 324 [2021-11-06 10:15:40,604 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 10:15:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-06 10:15:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 260. [2021-11-06 10:15:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 259 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 324 transitions. [2021-11-06 10:15:40,620 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 324 transitions. Word has length 56 [2021-11-06 10:15:40,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:40,620 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 324 transitions. [2021-11-06 10:15:40,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 324 transitions. [2021-11-06 10:15:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 10:15:40,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:40,622 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] [2021-11-06 10:15:40,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:15:40,622 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:15:40,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash 490043782, now seen corresponding path program 1 times [2021-11-06 10:15:40,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:40,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943752557] [2021-11-06 10:15:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:40,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:40,938 INFO 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 10:15:40,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:40,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943752557] [2021-11-06 10:15:40,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943752557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:40,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:40,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:15:40,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103098913] [2021-11-06 10:15:40,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:15:40,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:15:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:15:40,940 INFO L87 Difference]: Start difference. First operand 260 states and 324 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:41,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:41,277 INFO L93 Difference]: Finished difference Result 460 states and 572 transitions. [2021-11-06 10:15:41,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:15:41,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-06 10:15:41,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:41,279 INFO L225 Difference]: With dead ends: 460 [2021-11-06 10:15:41,279 INFO L226 Difference]: Without dead ends: 260 [2021-11-06 10:15:41,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:15:41,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-06 10:15:41,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-11-06 10:15:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.3061224489795917) internal successors, (320), 259 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:41,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 320 transitions. [2021-11-06 10:15:41,286 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 320 transitions. Word has length 56 [2021-11-06 10:15:41,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:41,287 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 320 transitions. [2021-11-06 10:15:41,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 320 transitions. [2021-11-06 10:15:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 10:15:41,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:41,290 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] [2021-11-06 10:15:41,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:15:41,290 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:15:41,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:41,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1793580219, now seen corresponding path program 1 times [2021-11-06 10:15:41,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:41,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915924980] [2021-11-06 10:15:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:41,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:41,601 INFO 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 10:15:41,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:41,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915924980] [2021-11-06 10:15:41,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915924980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:41,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:41,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:15:41,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986520205] [2021-11-06 10:15:41,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:15:41,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:41,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:15:41,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:15:41,603 INFO L87 Difference]: Start difference. First operand 260 states and 320 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:41,900 INFO L93 Difference]: Finished difference Result 383 states and 464 transitions. [2021-11-06 10:15:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:15:41,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 10:15:41,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:41,901 INFO L225 Difference]: With dead ends: 383 [2021-11-06 10:15:41,901 INFO L226 Difference]: Without dead ends: 260 [2021-11-06 10:15:41,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:15:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-06 10:15:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-11-06 10:15:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.3020408163265307) internal successors, (319), 259 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 319 transitions. [2021-11-06 10:15:41,907 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 319 transitions. Word has length 62 [2021-11-06 10:15:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:41,907 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 319 transitions. [2021-11-06 10:15:41,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 319 transitions. [2021-11-06 10:15:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 10:15:41,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:41,909 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] [2021-11-06 10:15:41,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:15:41,909 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:15:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:41,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1456541106, now seen corresponding path program 1 times [2021-11-06 10:15:41,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:41,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132612814] [2021-11-06 10:15:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:41,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:42,190 INFO 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 10:15:42,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:42,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132612814] [2021-11-06 10:15:42,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132612814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:42,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:42,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:15:42,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965723470] [2021-11-06 10:15:42,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:15:42,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:42,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:15:42,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:42,192 INFO L87 Difference]: Start difference. First operand 260 states and 319 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:42,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:42,751 INFO L93 Difference]: Finished difference Result 661 states and 832 transitions. [2021-11-06 10:15:42,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:15:42,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 10:15:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:42,753 INFO L225 Difference]: With dead ends: 661 [2021-11-06 10:15:42,754 INFO L226 Difference]: Without dead ends: 420 [2021-11-06 10:15:42,754 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 10:15:42,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-06 10:15:42,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 276. [2021-11-06 10:15:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 261 states have (on average 1.2835249042145593) internal successors, (335), 275 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 335 transitions. [2021-11-06 10:15:42,760 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 335 transitions. Word has length 68 [2021-11-06 10:15:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:42,760 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 335 transitions. [2021-11-06 10:15:42,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:42,761 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 335 transitions. [2021-11-06 10:15:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 10:15:42,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:42,762 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] [2021-11-06 10:15:42,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:15:42,762 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:15:42,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1063514096, now seen corresponding path program 1 times [2021-11-06 10:15:42,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:42,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943009974] [2021-11-06 10:15:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:42,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:43,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:43,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943009974] [2021-11-06 10:15:43,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943009974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:43,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:43,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:15:43,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644692222] [2021-11-06 10:15:43,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:15:43,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:43,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:15:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:15:43,392 INFO L87 Difference]: Start difference. First operand 276 states and 335 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:44,387 INFO L93 Difference]: Finished difference Result 480 states and 567 transitions. [2021-11-06 10:15:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:15:44,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 10:15:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:44,389 INFO L225 Difference]: With dead ends: 480 [2021-11-06 10:15:44,389 INFO L226 Difference]: Without dead ends: 472 [2021-11-06 10:15:44,390 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:15:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-06 10:15:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 292. [2021-11-06 10:15:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 277 states have (on average 1.2671480144404332) internal successors, (351), 291 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 351 transitions. [2021-11-06 10:15:44,397 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 351 transitions. Word has length 68 [2021-11-06 10:15:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:44,397 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 351 transitions. [2021-11-06 10:15:44,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 351 transitions. [2021-11-06 10:15:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 10:15:44,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:44,398 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:44,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:15:44,399 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:15:44,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash -634504508, now seen corresponding path program 1 times [2021-11-06 10:15:44,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:44,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044875502] [2021-11-06 10:15:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:44,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:45,353 INFO 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 10:15:45,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:45,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044875502] [2021-11-06 10:15:45,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044875502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:45,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:45,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:15:45,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491460953] [2021-11-06 10:15:45,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:15:45,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:45,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:15:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:15:45,355 INFO L87 Difference]: Start difference. First operand 292 states and 351 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:02,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:02,416 INFO L93 Difference]: Finished difference Result 767 states and 927 transitions. [2021-11-06 10:16:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 10:16:02,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 10:16:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:02,419 INFO L225 Difference]: With dead ends: 767 [2021-11-06 10:16:02,419 INFO L226 Difference]: Without dead ends: 624 [2021-11-06 10:16:02,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2021-11-06 10:16:02,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-11-06 10:16:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 346. [2021-11-06 10:16:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 331 states have (on average 1.2719033232628398) internal successors, (421), 345 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 421 transitions. [2021-11-06 10:16:02,431 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 421 transitions. Word has length 72 [2021-11-06 10:16:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:02,431 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 421 transitions. [2021-11-06 10:16:02,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:02,432 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 421 transitions. [2021-11-06 10:16:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 10:16:02,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:02,433 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:02,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 10:16:02,434 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:16:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash 45553862, now seen corresponding path program 1 times [2021-11-06 10:16:02,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:02,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314146374] [2021-11-06 10:16:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:02,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:02,929 INFO 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 10:16:02,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:02,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314146374] [2021-11-06 10:16:02,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314146374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:02,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:02,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:16:02,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128860793] [2021-11-06 10:16:02,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:16:02,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:02,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:16:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:16:02,932 INFO L87 Difference]: Start difference. First operand 346 states and 421 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:06,725 INFO L93 Difference]: Finished difference Result 886 states and 1072 transitions. [2021-11-06 10:16:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:16:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 10:16:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:06,727 INFO L225 Difference]: With dead ends: 886 [2021-11-06 10:16:06,727 INFO L226 Difference]: Without dead ends: 564 [2021-11-06 10:16:06,728 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 10:16:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-06 10:16:06,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 376. [2021-11-06 10:16:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 361 states have (on average 1.2493074792243768) internal successors, (451), 375 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 451 transitions. [2021-11-06 10:16:06,740 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 451 transitions. Word has length 72 [2021-11-06 10:16:06,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:06,740 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 451 transitions. [2021-11-06 10:16:06,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:06,740 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 451 transitions. [2021-11-06 10:16:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 10:16:06,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:06,741 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:06,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 10:16:06,741 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:16:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash 798505674, now seen corresponding path program 1 times [2021-11-06 10:16:06,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:06,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931973647] [2021-11-06 10:16:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:06,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:08,465 INFO 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 10:16:08,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:08,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931973647] [2021-11-06 10:16:08,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931973647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:08,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:08,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:16:08,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699050239] [2021-11-06 10:16:08,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:16:08,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:08,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:16:08,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:16:08,467 INFO L87 Difference]: Start difference. First operand 376 states and 451 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:45,222 INFO L93 Difference]: Finished difference Result 2440 states and 2924 transitions. [2021-11-06 10:16:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-06 10:16:45,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 10:16:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:45,229 INFO L225 Difference]: With dead ends: 2440 [2021-11-06 10:16:45,229 INFO L226 Difference]: Without dead ends: 2145 [2021-11-06 10:16:45,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=850, Invalid=3980, Unknown=0, NotChecked=0, Total=4830 [2021-11-06 10:16:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2021-11-06 10:16:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 439. [2021-11-06 10:16:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 424 states have (on average 1.2523584905660377) internal successors, (531), 438 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 531 transitions. [2021-11-06 10:16:45,253 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 531 transitions. Word has length 72 [2021-11-06 10:16:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:45,254 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 531 transitions. [2021-11-06 10:16:45,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 531 transitions. [2021-11-06 10:16:45,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 10:16:45,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:45,255 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] [2021-11-06 10:16:45,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 10:16:45,256 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:16:45,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:45,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1349516089, now seen corresponding path program 1 times [2021-11-06 10:16:45,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:45,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446301245] [2021-11-06 10:16:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:45,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:47,609 INFO 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 10:16:47,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:47,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446301245] [2021-11-06 10:16:47,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446301245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:47,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:47,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:16:47,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536626082] [2021-11-06 10:16:47,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:16:47,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:16:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:16:47,611 INFO L87 Difference]: Start difference. First operand 439 states and 531 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:53,654 INFO L93 Difference]: Finished difference Result 1253 states and 1530 transitions. [2021-11-06 10:16:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 10:16:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 10:16:53,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:53,658 INFO L225 Difference]: With dead ends: 1253 [2021-11-06 10:16:53,659 INFO L226 Difference]: Without dead ends: 859 [2021-11-06 10:16:53,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:16:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-11-06 10:16:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 439. [2021-11-06 10:16:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 424 states have (on average 1.25) internal successors, (530), 438 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 530 transitions. [2021-11-06 10:16:53,672 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 530 transitions. Word has length 74 [2021-11-06 10:16:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:53,672 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 530 transitions. [2021-11-06 10:16:53,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 530 transitions. [2021-11-06 10:16:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 10:16:53,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:53,673 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:53,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 10:16:53,673 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:16:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash 936922580, now seen corresponding path program 1 times [2021-11-06 10:16:53,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:53,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896535493] [2021-11-06 10:16:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:53,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:54,199 INFO 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 10:16:54,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:54,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896535493] [2021-11-06 10:16:54,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896535493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:54,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:54,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:16:54,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215286455] [2021-11-06 10:16:54,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:16:54,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:16:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:16:54,201 INFO L87 Difference]: Start difference. First operand 439 states and 530 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:55,209 INFO L93 Difference]: Finished difference Result 963 states and 1139 transitions. [2021-11-06 10:16:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:16:55,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 10:16:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:55,212 INFO L225 Difference]: With dead ends: 963 [2021-11-06 10:16:55,212 INFO L226 Difference]: Without dead ends: 525 [2021-11-06 10:16:55,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:16:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-06 10:16:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 439. [2021-11-06 10:16:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 424 states have (on average 1.2287735849056605) internal successors, (521), 438 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 521 transitions. [2021-11-06 10:16:55,222 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 521 transitions. Word has length 76 [2021-11-06 10:16:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:55,222 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 521 transitions. [2021-11-06 10:16:55,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 521 transitions. [2021-11-06 10:16:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 10:16:55,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:55,223 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:55,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 10:16:55,223 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:16:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1786353145, now seen corresponding path program 1 times [2021-11-06 10:16:55,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:55,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110916003] [2021-11-06 10:16:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:55,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:55,762 INFO 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 10:16:55,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:55,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110916003] [2021-11-06 10:16:55,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110916003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:55,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:55,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:16:55,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752213701] [2021-11-06 10:16:55,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:16:55,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:55,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:16:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:16:55,763 INFO L87 Difference]: Start difference. First operand 439 states and 521 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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 10:17:03,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:03,073 INFO L93 Difference]: Finished difference Result 1079 states and 1270 transitions. [2021-11-06 10:17:03,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:17:03,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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 10:17:03,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:03,075 INFO L225 Difference]: With dead ends: 1079 [2021-11-06 10:17:03,075 INFO L226 Difference]: Without dead ends: 626 [2021-11-06 10:17:03,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:17:03,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-11-06 10:17:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 434. [2021-11-06 10:17:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 419 states have (on average 1.2028639618138426) internal successors, (504), 433 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 504 transitions. [2021-11-06 10:17:03,102 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 504 transitions. Word has length 78 [2021-11-06 10:17:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:03,103 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 504 transitions. [2021-11-06 10:17:03,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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 10:17:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 504 transitions. [2021-11-06 10:17:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 10:17:03,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:03,104 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 10:17:03,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 10:17:03,104 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:17:03,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash 100173307, now seen corresponding path program 1 times [2021-11-06 10:17:03,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:03,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916078302] [2021-11-06 10:17:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:03,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:04,079 INFO 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 10:17:04,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:04,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916078302] [2021-11-06 10:17:04,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916078302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:04,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:04,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:17:04,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487956722] [2021-11-06 10:17:04,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:17:04,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:17:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:17:04,081 INFO L87 Difference]: Start difference. First operand 434 states and 504 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 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 10:17:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:24,141 INFO L93 Difference]: Finished difference Result 2386 states and 2777 transitions. [2021-11-06 10:17:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-06 10:17:24,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 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 10:17:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:24,147 INFO L225 Difference]: With dead ends: 2386 [2021-11-06 10:17:24,147 INFO L226 Difference]: Without dead ends: 2207 [2021-11-06 10:17:24,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=791, Invalid=2289, Unknown=0, NotChecked=0, Total=3080 [2021-11-06 10:17:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-06 10:17:24,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 499. [2021-11-06 10:17:24,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 484 states have (on average 1.2024793388429753) internal successors, (582), 498 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 582 transitions. [2021-11-06 10:17:24,166 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 582 transitions. Word has length 78 [2021-11-06 10:17:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:24,167 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 582 transitions. [2021-11-06 10:17:24,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 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 10:17:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 582 transitions. [2021-11-06 10:17:24,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 10:17:24,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:24,168 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 10:17:24,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 10:17:24,169 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:17:24,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:24,169 INFO L85 PathProgramCache]: Analyzing trace with hash 358338745, now seen corresponding path program 1 times [2021-11-06 10:17:24,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:24,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806452700] [2021-11-06 10:17:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:24,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:24,882 INFO 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 10:17:24,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:24,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806452700] [2021-11-06 10:17:24,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806452700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:24,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:24,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:17:24,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731544104] [2021-11-06 10:17:24,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:17:24,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:24,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:17:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:17:24,884 INFO L87 Difference]: Start difference. First operand 499 states and 582 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 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 10:17:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:33,578 INFO L93 Difference]: Finished difference Result 1033 states and 1199 transitions. [2021-11-06 10:17:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:17:33,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 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 10:17:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:33,580 INFO L225 Difference]: With dead ends: 1033 [2021-11-06 10:17:33,580 INFO L226 Difference]: Without dead ends: 831 [2021-11-06 10:17:33,581 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:17:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-11-06 10:17:33,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 472. [2021-11-06 10:17:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 457 states have (on average 1.1969365426695842) internal successors, (547), 471 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 547 transitions. [2021-11-06 10:17:33,593 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 547 transitions. Word has length 78 [2021-11-06 10:17:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:33,593 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 547 transitions. [2021-11-06 10:17:33,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 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 10:17:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 547 transitions. [2021-11-06 10:17:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 10:17:33,594 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:33,594 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] [2021-11-06 10:17:33,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 10:17:33,594 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:17:33,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:33,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1125624154, now seen corresponding path program 1 times [2021-11-06 10:17:33,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:33,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153554587] [2021-11-06 10:17:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:33,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:33,992 INFO 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 10:17:33,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:33,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153554587] [2021-11-06 10:17:33,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153554587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:33,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:33,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:17:33,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855748514] [2021-11-06 10:17:33,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:17:33,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:33,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:17:33,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:17:33,994 INFO L87 Difference]: Start difference. First operand 472 states and 547 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:37,255 INFO L93 Difference]: Finished difference Result 937 states and 1076 transitions. [2021-11-06 10:17:37,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:17:37,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 10:17:37,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:37,257 INFO L225 Difference]: With dead ends: 937 [2021-11-06 10:17:37,257 INFO L226 Difference]: Without dead ends: 493 [2021-11-06 10:17:37,257 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 10:17:37,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-06 10:17:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 383. [2021-11-06 10:17:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 368 states have (on average 1.171195652173913) internal successors, (431), 382 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 431 transitions. [2021-11-06 10:17:37,268 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 431 transitions. Word has length 80 [2021-11-06 10:17:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:37,268 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 431 transitions. [2021-11-06 10:17:37,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:37,268 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 431 transitions. [2021-11-06 10:17:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 10:17:37,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:37,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:17:37,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 10:17:37,270 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:17:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash 161114960, now seen corresponding path program 1 times [2021-11-06 10:17:37,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:37,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761087279] [2021-11-06 10:17:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:37,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:37,699 INFO 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 10:17:37,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:37,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761087279] [2021-11-06 10:17:37,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761087279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:37,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:37,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:17:37,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768015762] [2021-11-06 10:17:37,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:17:37,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:17:37,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:17:37,701 INFO L87 Difference]: Start difference. First operand 383 states and 431 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:39,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:39,562 INFO L93 Difference]: Finished difference Result 649 states and 723 transitions. [2021-11-06 10:17:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:17:39,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 10:17:39,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:39,564 INFO L225 Difference]: With dead ends: 649 [2021-11-06 10:17:39,564 INFO L226 Difference]: Without dead ends: 641 [2021-11-06 10:17:39,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:17:39,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-11-06 10:17:39,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 391. [2021-11-06 10:17:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 376 states have (on average 1.1675531914893618) internal successors, (439), 390 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 439 transitions. [2021-11-06 10:17:39,575 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 439 transitions. Word has length 80 [2021-11-06 10:17:39,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:39,576 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 439 transitions. [2021-11-06 10:17:39,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 439 transitions. [2021-11-06 10:17:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 10:17:39,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:39,577 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] [2021-11-06 10:17:39,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 10:17:39,577 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:17:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash -648231666, now seen corresponding path program 1 times [2021-11-06 10:17:39,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:39,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016356746] [2021-11-06 10:17:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:39,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:40,754 INFO 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 10:17:40,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:40,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016356746] [2021-11-06 10:17:40,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016356746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:40,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:40,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:17:40,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182762515] [2021-11-06 10:17:40,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:17:40,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:17:40,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:17:40,756 INFO L87 Difference]: Start difference. First operand 391 states and 439 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:56,020 INFO L93 Difference]: Finished difference Result 1944 states and 2157 transitions. [2021-11-06 10:17:56,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-06 10:17:56,020 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 10:17:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:56,024 INFO L225 Difference]: With dead ends: 1944 [2021-11-06 10:17:56,024 INFO L226 Difference]: Without dead ends: 1762 [2021-11-06 10:17:56,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2021-11-06 10:17:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2021-11-06 10:17:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 388. [2021-11-06 10:17:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 373 states have (on average 1.1662198391420913) internal successors, (435), 387 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 435 transitions. [2021-11-06 10:17:56,039 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 435 transitions. Word has length 80 [2021-11-06 10:17:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:56,040 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 435 transitions. [2021-11-06 10:17:56,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 435 transitions. [2021-11-06 10:17:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 10:17:56,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:56,041 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] [2021-11-06 10:17:56,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 10:17:56,041 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:17:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash 267009578, now seen corresponding path program 1 times [2021-11-06 10:17:56,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:56,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415124786] [2021-11-06 10:17:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:56,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:58,357 INFO 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 10:17:58,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:58,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415124786] [2021-11-06 10:17:58,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415124786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:58,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:58,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:17:58,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401202918] [2021-11-06 10:17:58,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:17:58,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:58,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:17:58,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:17:58,359 INFO L87 Difference]: Start difference. First operand 388 states and 435 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:07,612 INFO L93 Difference]: Finished difference Result 1296 states and 1444 transitions. [2021-11-06 10:18:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:18:07,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 10:18:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:07,615 INFO L225 Difference]: With dead ends: 1296 [2021-11-06 10:18:07,616 INFO L226 Difference]: Without dead ends: 1062 [2021-11-06 10:18:07,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2021-11-06 10:18:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2021-11-06 10:18:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 532. [2021-11-06 10:18:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 517 states have (on average 1.1760154738878144) internal successors, (608), 531 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 608 transitions. [2021-11-06 10:18:07,636 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 608 transitions. Word has length 80 [2021-11-06 10:18:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:07,636 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 608 transitions. [2021-11-06 10:18:07,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 608 transitions. [2021-11-06 10:18:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 10:18:07,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:07,637 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] [2021-11-06 10:18:07,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 10:18:07,638 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:18:07,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:07,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1666111877, now seen corresponding path program 1 times [2021-11-06 10:18:07,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:07,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603275516] [2021-11-06 10:18:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:07,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:09,126 INFO 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 10:18:09,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:09,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603275516] [2021-11-06 10:18:09,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603275516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:09,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:09,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:18:09,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99760545] [2021-11-06 10:18:09,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:18:09,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:09,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:18:09,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:18:09,127 INFO L87 Difference]: Start difference. First operand 532 states and 608 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:27,948 INFO L93 Difference]: Finished difference Result 1914 states and 2153 transitions. [2021-11-06 10:18:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:18:27,949 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 10:18:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:27,953 INFO L225 Difference]: With dead ends: 1914 [2021-11-06 10:18:27,953 INFO L226 Difference]: Without dead ends: 1600 [2021-11-06 10:18:27,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:18:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-11-06 10:18:27,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 537. [2021-11-06 10:18:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 522 states have (on average 1.1743295019157087) internal successors, (613), 536 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 613 transitions. [2021-11-06 10:18:27,975 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 613 transitions. Word has length 83 [2021-11-06 10:18:27,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:27,975 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 613 transitions. [2021-11-06 10:18:27,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:27,975 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 613 transitions. [2021-11-06 10:18:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 10:18:27,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:27,976 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] [2021-11-06 10:18:27,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 10:18:27,977 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:18:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash -731921839, now seen corresponding path program 1 times [2021-11-06 10:18:27,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:27,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132733750] [2021-11-06 10:18:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:27,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:28,914 INFO 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 10:18:28,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:28,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132733750] [2021-11-06 10:18:28,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132733750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:28,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:28,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:18:28,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739433002] [2021-11-06 10:18:28,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:18:28,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:18:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:18:28,916 INFO L87 Difference]: Start difference. First operand 537 states and 613 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:37,101 INFO L93 Difference]: Finished difference Result 1841 states and 2084 transitions. [2021-11-06 10:18:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-06 10:18:37,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 10:18:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:37,105 INFO L225 Difference]: With dead ends: 1841 [2021-11-06 10:18:37,105 INFO L226 Difference]: Without dead ends: 1524 [2021-11-06 10:18:37,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:18:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-11-06 10:18:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 550. [2021-11-06 10:18:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 535 states have (on average 1.1738317757009347) internal successors, (628), 549 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 628 transitions. [2021-11-06 10:18:37,127 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 628 transitions. Word has length 83 [2021-11-06 10:18:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:37,127 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 628 transitions. [2021-11-06 10:18:37,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 628 transitions. [2021-11-06 10:18:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 10:18:37,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:37,128 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] [2021-11-06 10:18:37,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 10:18:37,128 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:18:37,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:37,129 INFO L85 PathProgramCache]: Analyzing trace with hash -52649585, now seen corresponding path program 1 times [2021-11-06 10:18:37,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:37,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319329562] [2021-11-06 10:18:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:37,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:38,232 INFO 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 10:18:38,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:38,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319329562] [2021-11-06 10:18:38,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319329562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:38,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:38,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:18:38,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098510836] [2021-11-06 10:18:38,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:18:38,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:38,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:18:38,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:18:38,234 INFO L87 Difference]: Start difference. First operand 550 states and 628 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:53,513 INFO L93 Difference]: Finished difference Result 2070 states and 2352 transitions. [2021-11-06 10:18:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:18:53,514 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 10:18:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:53,518 INFO L225 Difference]: With dead ends: 2070 [2021-11-06 10:18:53,518 INFO L226 Difference]: Without dead ends: 1753 [2021-11-06 10:18:53,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:18:53,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-11-06 10:18:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 537. [2021-11-06 10:18:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 522 states have (on average 1.1724137931034482) internal successors, (612), 536 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 10:18:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 612 transitions. [2021-11-06 10:18:53,543 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 612 transitions. Word has length 83 [2021-11-06 10:18:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:53,543 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 612 transitions. [2021-11-06 10:18:53,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 612 transitions. [2021-11-06 10:18:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 10:18:53,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:53,544 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:18:53,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 10:18:53,544 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:18:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash -91529882, now seen corresponding path program 1 times [2021-11-06 10:18:53,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:53,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882821381] [2021-11-06 10:18:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:53,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:54,976 INFO 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 10:18:54,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:54,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882821381] [2021-11-06 10:18:54,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882821381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:54,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:54,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:18:54,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725954710] [2021-11-06 10:18:54,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:18:54,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:54,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:18:54,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:18:54,978 INFO L87 Difference]: Start difference. First operand 537 states and 612 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:21,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:19:21,319 INFO L93 Difference]: Finished difference Result 3676 states and 4136 transitions. [2021-11-06 10:19:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-06 10:19:21,320 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 10:19:21,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:19:21,327 INFO L225 Difference]: With dead ends: 3676 [2021-11-06 10:19:21,328 INFO L226 Difference]: Without dead ends: 3415 [2021-11-06 10:19:21,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1285, Invalid=4567, Unknown=0, NotChecked=0, Total=5852 [2021-11-06 10:19:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2021-11-06 10:19:21,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 581. [2021-11-06 10:19:21,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 566 states have (on average 1.1625441696113075) internal successors, (658), 580 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 658 transitions. [2021-11-06 10:19:21,362 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 658 transitions. Word has length 84 [2021-11-06 10:19:21,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:19:21,362 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 658 transitions. [2021-11-06 10:19:21,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:21,362 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 658 transitions. [2021-11-06 10:19:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 10:19:21,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:19:21,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:19:21,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 10:19:21,363 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:19:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:19:21,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1936897048, now seen corresponding path program 1 times [2021-11-06 10:19:21,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:19:21,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470119883] [2021-11-06 10:19:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:19:21,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:19:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:19:22,191 INFO 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 10:19:22,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:19:22,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470119883] [2021-11-06 10:19:22,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470119883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:19:22,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:19:22,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:19:22,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162511599] [2021-11-06 10:19:22,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:19:22,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:19:22,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:19:22,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:19:22,193 INFO L87 Difference]: Start difference. First operand 581 states and 658 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:19:30,225 INFO L93 Difference]: Finished difference Result 1645 states and 1841 transitions. [2021-11-06 10:19:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:19:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 10:19:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:19:30,229 INFO L225 Difference]: With dead ends: 1645 [2021-11-06 10:19:30,229 INFO L226 Difference]: Without dead ends: 1451 [2021-11-06 10:19:30,230 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:19:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2021-11-06 10:19:30,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 559. [2021-11-06 10:19:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 544 states have (on average 1.1636029411764706) internal successors, (633), 558 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 633 transitions. [2021-11-06 10:19:30,256 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 633 transitions. Word has length 84 [2021-11-06 10:19:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:19:30,256 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 633 transitions. [2021-11-06 10:19:30,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:30,256 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 633 transitions. [2021-11-06 10:19:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:19:30,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:19:30,257 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 10:19:30,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 10:19:30,257 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:19:30,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:19:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1562027286, now seen corresponding path program 1 times [2021-11-06 10:19:30,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:19:30,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240936621] [2021-11-06 10:19:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:19:30,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:19:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:19:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:19:32,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:19:32,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240936621] [2021-11-06 10:19:32,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240936621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:19:32,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:19:32,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-06 10:19:32,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945812102] [2021-11-06 10:19:32,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 10:19:32,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:19:32,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 10:19:32,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:19:32,513 INFO L87 Difference]: Start difference. First operand 559 states and 633 transitions. Second operand has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 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 10:19:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:19:49,871 INFO L93 Difference]: Finished difference Result 2350 states and 2636 transitions. [2021-11-06 10:19:49,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 10:19:49,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 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 10:19:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:19:49,876 INFO L225 Difference]: With dead ends: 2350 [2021-11-06 10:19:49,877 INFO L226 Difference]: Without dead ends: 2117 [2021-11-06 10:19:49,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=391, Invalid=1015, Unknown=0, NotChecked=0, Total=1406 [2021-11-06 10:19:49,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2021-11-06 10:19:49,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 665. [2021-11-06 10:19:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 650 states have (on average 1.1492307692307693) internal successors, (747), 664 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 747 transitions. [2021-11-06 10:19:49,908 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 747 transitions. Word has length 86 [2021-11-06 10:19:49,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:19:49,908 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 747 transitions. [2021-11-06 10:19:49,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 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 10:19:49,910 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 747 transitions. [2021-11-06 10:19:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:19:49,910 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:19:49,911 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 10:19:49,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 10:19:49,911 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:19:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:19:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2024078677, now seen corresponding path program 1 times [2021-11-06 10:19:49,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:19:49,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041534543] [2021-11-06 10:19:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:19:49,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:19:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:19:50,811 INFO 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 10:19:50,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:19:50,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041534543] [2021-11-06 10:19:50,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041534543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:19:50,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:19:50,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:19:50,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179523371] [2021-11-06 10:19:50,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:19:50,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:19:50,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:19:50,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:19:50,816 INFO L87 Difference]: Start difference. First operand 665 states and 747 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 10:20:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:20:03,077 INFO L93 Difference]: Finished difference Result 1295 states and 1463 transitions. [2021-11-06 10:20:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:20:03,078 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 10:20:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:20:03,081 INFO L225 Difference]: With dead ends: 1295 [2021-11-06 10:20:03,081 INFO L226 Difference]: Without dead ends: 1084 [2021-11-06 10:20:03,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:20:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-11-06 10:20:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 783. [2021-11-06 10:20:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 768 states have (on average 1.15234375) internal successors, (885), 782 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 885 transitions. [2021-11-06 10:20:03,124 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 885 transitions. Word has length 86 [2021-11-06 10:20:03,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:20:03,125 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 885 transitions. [2021-11-06 10:20:03,125 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 10:20:03,125 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 885 transitions. [2021-11-06 10:20:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:20:03,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:20:03,126 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 10:20:03,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 10:20:03,127 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:20:03,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:20:03,127 INFO L85 PathProgramCache]: Analyzing trace with hash -837878437, now seen corresponding path program 1 times [2021-11-06 10:20:03,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:20:03,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121465630] [2021-11-06 10:20:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:20:03,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:20:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:20:06,396 INFO 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 10:20:06,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:20:06,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121465630] [2021-11-06 10:20:06,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121465630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:20:06,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:20:06,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:20:06,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797672651] [2021-11-06 10:20:06,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:20:06,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:20:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:20:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:20:06,398 INFO L87 Difference]: Start difference. First operand 783 states and 885 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 10:20:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:20:13,481 INFO L93 Difference]: Finished difference Result 1467 states and 1643 transitions. [2021-11-06 10:20:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 10:20:13,482 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 10:20:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:20:13,485 INFO L225 Difference]: With dead ends: 1467 [2021-11-06 10:20:13,485 INFO L226 Difference]: Without dead ends: 1222 [2021-11-06 10:20:13,485 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=301, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:20:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-11-06 10:20:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 767. [2021-11-06 10:20:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 752 states have (on average 1.1476063829787233) internal successors, (863), 766 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 863 transitions. [2021-11-06 10:20:13,521 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 863 transitions. Word has length 86 [2021-11-06 10:20:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:20:13,522 INFO L470 AbstractCegarLoop]: Abstraction has 767 states and 863 transitions. [2021-11-06 10:20:13,522 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 10:20:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 863 transitions. [2021-11-06 10:20:13,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 10:20:13,523 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:20:13,523 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:20:13,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 10:20:13,524 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:20:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:20:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash 225369878, now seen corresponding path program 1 times [2021-11-06 10:20:13,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:20:13,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420143361] [2021-11-06 10:20:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:20:13,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:20:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:20:15,904 INFO 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 10:20:15,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:20:15,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420143361] [2021-11-06 10:20:15,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420143361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:20:15,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:20:15,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:20:15,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557383069] [2021-11-06 10:20:15,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:20:15,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:20:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:20:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:20:15,907 INFO L87 Difference]: Start difference. First operand 767 states and 863 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:20:30,198 INFO L93 Difference]: Finished difference Result 1453 states and 1629 transitions. [2021-11-06 10:20:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:20:30,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-06 10:20:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:20:30,200 INFO L225 Difference]: With dead ends: 1453 [2021-11-06 10:20:30,201 INFO L226 Difference]: Without dead ends: 1189 [2021-11-06 10:20:30,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:20:30,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-11-06 10:20:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 778. [2021-11-06 10:20:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 763 states have (on average 1.146788990825688) internal successors, (875), 777 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 875 transitions. [2021-11-06 10:20:30,237 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 875 transitions. Word has length 90 [2021-11-06 10:20:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:20:30,237 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 875 transitions. [2021-11-06 10:20:30,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 875 transitions. [2021-11-06 10:20:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 10:20:30,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:20:30,238 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:20:30,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 10:20:30,238 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:20:30,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:20:30,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1813535956, now seen corresponding path program 1 times [2021-11-06 10:20:30,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:20:30,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457861010] [2021-11-06 10:20:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:20:30,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:20:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:20:31,998 INFO 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 10:20:31,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:20:31,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457861010] [2021-11-06 10:20:31,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457861010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:20:31,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:20:31,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:20:31,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528776367] [2021-11-06 10:20:31,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:20:31,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:20:31,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:20:31,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:20:32,000 INFO L87 Difference]: Start difference. First operand 778 states and 875 transitions. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:20:53,969 INFO L93 Difference]: Finished difference Result 1197 states and 1348 transitions. [2021-11-06 10:20:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:20:53,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-06 10:20:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:20:53,971 INFO L225 Difference]: With dead ends: 1197 [2021-11-06 10:20:53,971 INFO L226 Difference]: Without dead ends: 962 [2021-11-06 10:20:53,971 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:20:53,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-11-06 10:20:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 810. [2021-11-06 10:20:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 795 states have (on average 1.1534591194968553) internal successors, (917), 809 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 917 transitions. [2021-11-06 10:20:54,007 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 917 transitions. Word has length 90 [2021-11-06 10:20:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:20:54,007 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 917 transitions. [2021-11-06 10:20:54,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 917 transitions. [2021-11-06 10:20:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 10:20:54,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:20:54,008 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] [2021-11-06 10:20:54,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 10:20:54,009 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:20:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:20:54,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1670319370, now seen corresponding path program 1 times [2021-11-06 10:20:54,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:20:54,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272163178] [2021-11-06 10:20:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:20:54,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:20:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:20:59,762 INFO 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 10:20:59,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:20:59,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272163178] [2021-11-06 10:20:59,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272163178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:20:59,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:20:59,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:20:59,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286722547] [2021-11-06 10:20:59,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:20:59,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:20:59,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:20:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:20:59,763 INFO L87 Difference]: Start difference. First operand 810 states and 917 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:21:12,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:21:12,689 INFO L93 Difference]: Finished difference Result 1573 states and 1768 transitions. [2021-11-06 10:21:12,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-06 10:21:12,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 10:21:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:21:12,691 INFO L225 Difference]: With dead ends: 1573 [2021-11-06 10:21:12,691 INFO L226 Difference]: Without dead ends: 1283 [2021-11-06 10:21:12,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 10:21:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-11-06 10:21:12,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 766. [2021-11-06 10:21:12,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 751 states have (on average 1.137150466045273) internal successors, (854), 765 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:21:12,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 854 transitions. [2021-11-06 10:21:12,734 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 854 transitions. Word has length 92 [2021-11-06 10:21:12,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:21:12,734 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 854 transitions. [2021-11-06 10:21:12,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:21:12,735 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 854 transitions. [2021-11-06 10:21:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 10:21:12,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:21:12,735 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] [2021-11-06 10:21:12,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 10:21:12,736 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:21:12,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:21:12,736 INFO L85 PathProgramCache]: Analyzing trace with hash -115779194, now seen corresponding path program 1 times [2021-11-06 10:21:12,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:21:12,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490527496] [2021-11-06 10:21:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:21:12,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:21:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:21:13,643 INFO 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 10:21:13,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:21:13,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490527496] [2021-11-06 10:21:13,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490527496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:21:13,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:21:13,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:21:13,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329300330] [2021-11-06 10:21:13,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:21:13,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:21:13,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:21:13,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:21:13,645 INFO L87 Difference]: Start difference. First operand 766 states and 854 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:21:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:21:31,956 INFO L93 Difference]: Finished difference Result 2352 states and 2633 transitions. [2021-11-06 10:21:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-06 10:21:31,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 10:21:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:21:31,959 INFO L225 Difference]: With dead ends: 2352 [2021-11-06 10:21:31,959 INFO L226 Difference]: Without dead ends: 2075 [2021-11-06 10:21:31,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 10:21:31,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2021-11-06 10:21:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 768. [2021-11-06 10:21:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 753 states have (on average 1.1367861885790174) internal successors, (856), 767 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:21:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 856 transitions. [2021-11-06 10:21:32,000 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 856 transitions. Word has length 92 [2021-11-06 10:21:32,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:21:32,001 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 856 transitions. [2021-11-06 10:21:32,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:21:32,001 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 856 transitions. [2021-11-06 10:21:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 10:21:32,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:21:32,002 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] [2021-11-06 10:21:32,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 10:21:32,002 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:21:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:21:32,002 INFO L85 PathProgramCache]: Analyzing trace with hash -51499588, now seen corresponding path program 1 times [2021-11-06 10:21:32,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:21:32,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414440826] [2021-11-06 10:21:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:21:32,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:21:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:21:33,137 INFO 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 10:21:33,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:21:33,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414440826] [2021-11-06 10:21:33,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414440826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:21:33,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:21:33,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:21:33,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100219937] [2021-11-06 10:21:33,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:21:33,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:21:33,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:21:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:21:33,138 INFO L87 Difference]: Start difference. First operand 768 states and 856 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:21:54,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:21:54,496 INFO L93 Difference]: Finished difference Result 2820 states and 3136 transitions. [2021-11-06 10:21:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-06 10:21:54,497 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 10:21:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:21:54,499 INFO L225 Difference]: With dead ends: 2820 [2021-11-06 10:21:54,499 INFO L226 Difference]: Without dead ends: 2448 [2021-11-06 10:21:54,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=395, Invalid=1087, Unknown=0, NotChecked=0, Total=1482 [2021-11-06 10:21:54,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2021-11-06 10:21:54,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 825. [2021-11-06 10:21:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 810 states have (on average 1.1271604938271604) internal successors, (913), 824 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:21:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 913 transitions. [2021-11-06 10:21:54,556 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 913 transitions. Word has length 92 [2021-11-06 10:21:54,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:21:54,556 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 913 transitions. [2021-11-06 10:21:54,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:21:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 913 transitions. [2021-11-06 10:21:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 10:21:54,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:21:54,557 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] [2021-11-06 10:21:54,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 10:21:54,558 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:21:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:21:54,558 INFO L85 PathProgramCache]: Analyzing trace with hash -28867334, now seen corresponding path program 1 times [2021-11-06 10:21:54,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:21:54,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745107172] [2021-11-06 10:21:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:21:54,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:21:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:21:55,743 INFO 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 10:21:55,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:21:55,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745107172] [2021-11-06 10:21:55,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745107172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:21:55,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:21:55,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:21:55,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181711984] [2021-11-06 10:21:55,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:21:55,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:21:55,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:21:55,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:21:55,745 INFO L87 Difference]: Start difference. First operand 825 states and 913 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:22:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:22:11,858 INFO L93 Difference]: Finished difference Result 1671 states and 1843 transitions. [2021-11-06 10:22:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-06 10:22:11,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 10:22:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:22:11,860 INFO L225 Difference]: With dead ends: 1671 [2021-11-06 10:22:11,860 INFO L226 Difference]: Without dead ends: 1424 [2021-11-06 10:22:11,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 10:22:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-11-06 10:22:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1128. [2021-11-06 10:22:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1113 states have (on average 1.1302785265049415) internal successors, (1258), 1127 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:22:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1258 transitions. [2021-11-06 10:22:11,920 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1258 transitions. Word has length 92 [2021-11-06 10:22:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:22:11,921 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 1258 transitions. [2021-11-06 10:22:11,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:22:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1258 transitions. [2021-11-06 10:22:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 10:22:11,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:22:11,922 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] [2021-11-06 10:22:11,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-06 10:22:11,922 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:22:11,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:22:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash -996217988, now seen corresponding path program 1 times [2021-11-06 10:22:11,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:22:11,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231145170] [2021-11-06 10:22:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:22:11,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:22:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:22:15,752 INFO 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 10:22:15,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:22:15,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231145170] [2021-11-06 10:22:15,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231145170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:22:15,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:22:15,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:22:15,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082118531] [2021-11-06 10:22:15,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:22:15,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:22:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:22:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:22:15,755 INFO L87 Difference]: Start difference. First operand 1128 states and 1258 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:22:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:22:40,130 INFO L93 Difference]: Finished difference Result 1739 states and 1922 transitions. [2021-11-06 10:22:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:22:40,131 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 10:22:40,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:22:40,133 INFO L225 Difference]: With dead ends: 1739 [2021-11-06 10:22:40,133 INFO L226 Difference]: Without dead ends: 1457 [2021-11-06 10:22:40,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:22:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-06 10:22:40,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1011. [2021-11-06 10:22:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 996 states have (on average 1.1275100401606426) internal successors, (1123), 1010 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:22:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1123 transitions. [2021-11-06 10:22:40,188 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1123 transitions. Word has length 92 [2021-11-06 10:22:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:22:40,188 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 1123 transitions. [2021-11-06 10:22:40,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:22:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1123 transitions. [2021-11-06 10:22:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 10:22:40,189 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:22:40,189 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:22:40,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-06 10:22:40,189 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:22:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:22:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash 728613981, now seen corresponding path program 1 times [2021-11-06 10:22:40,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:22:40,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109360193] [2021-11-06 10:22:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:22:40,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:22:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:22:41,290 INFO 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 10:22:41,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:22:41,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109360193] [2021-11-06 10:22:41,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109360193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:22:41,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:22:41,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:22:41,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298245688] [2021-11-06 10:22:41,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:22:41,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:22:41,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:22:41,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:22:41,292 INFO L87 Difference]: Start difference. First operand 1011 states and 1123 transitions. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:22:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:22:56,524 INFO L93 Difference]: Finished difference Result 1586 states and 1759 transitions. [2021-11-06 10:22:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:22:56,525 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 10:22:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:22:56,527 INFO L225 Difference]: With dead ends: 1586 [2021-11-06 10:22:56,527 INFO L226 Difference]: Without dead ends: 1256 [2021-11-06 10:22:56,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2021-11-06 10:22:56,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-11-06 10:22:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 987. [2021-11-06 10:22:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 972 states have (on average 1.1224279835390947) internal successors, (1091), 986 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:22:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1091 transitions. [2021-11-06 10:22:56,581 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1091 transitions. Word has length 94 [2021-11-06 10:22:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:22:56,582 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1091 transitions. [2021-11-06 10:22:56,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:22:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1091 transitions. [2021-11-06 10:22:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 10:22:56,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:22:56,583 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 10:22:56,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-06 10:22:56,583 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:22:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:22:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1822899773, now seen corresponding path program 1 times [2021-11-06 10:22:56,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:22:56,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221114571] [2021-11-06 10:22:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:22:56,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:22:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:22:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:22:58,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:22:58,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221114571] [2021-11-06 10:22:58,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221114571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:22:58,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:22:58,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:22:58,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160053151] [2021-11-06 10:22:58,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:22:58,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:22:58,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:22:58,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:22:58,776 INFO L87 Difference]: Start difference. First operand 987 states and 1091 transitions. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 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 10:23:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:23:18,303 INFO L93 Difference]: Finished difference Result 1439 states and 1592 transitions. [2021-11-06 10:23:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:23:18,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 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 10:23:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:23:18,306 INFO L225 Difference]: With dead ends: 1439 [2021-11-06 10:23:18,306 INFO L226 Difference]: Without dead ends: 1146 [2021-11-06 10:23:18,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:23:18,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-11-06 10:23:18,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 981. [2021-11-06 10:23:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 966 states have (on average 1.1221532091097308) internal successors, (1084), 980 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:23:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1084 transitions. [2021-11-06 10:23:18,369 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1084 transitions. Word has length 96 [2021-11-06 10:23:18,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:23:18,370 INFO L470 AbstractCegarLoop]: Abstraction has 981 states and 1084 transitions. [2021-11-06 10:23:18,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 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 10:23:18,370 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1084 transitions. [2021-11-06 10:23:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 10:23:18,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:23:18,370 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 10:23:18,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 10:23:18,371 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:23:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:23:18,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1962594433, now seen corresponding path program 1 times [2021-11-06 10:23:18,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:23:18,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120961121] [2021-11-06 10:23:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:23:18,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:23:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:23:19,674 INFO 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 10:23:19,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:23:19,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120961121] [2021-11-06 10:23:19,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120961121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:23:19,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:23:19,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:23:19,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816178110] [2021-11-06 10:23:19,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:23:19,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:23:19,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:23:19,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:23:19,676 INFO L87 Difference]: Start difference. First operand 981 states and 1084 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 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 10:23:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:23:26,562 INFO L93 Difference]: Finished difference Result 1827 states and 2007 transitions. [2021-11-06 10:23:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:23:26,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 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 10:23:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:23:26,565 INFO L225 Difference]: With dead ends: 1827 [2021-11-06 10:23:26,565 INFO L226 Difference]: Without dead ends: 1511 [2021-11-06 10:23:26,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:23:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-11-06 10:23:26,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 981. [2021-11-06 10:23:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 966 states have (on average 1.1211180124223603) internal successors, (1083), 980 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:23:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1083 transitions. [2021-11-06 10:23:26,618 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1083 transitions. Word has length 96 [2021-11-06 10:23:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:23:26,618 INFO L470 AbstractCegarLoop]: Abstraction has 981 states and 1083 transitions. [2021-11-06 10:23:26,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 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 10:23:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1083 transitions. [2021-11-06 10:23:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 10:23:26,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:23:26,619 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 10:23:26,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-06 10:23:26,619 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:23:26,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:23:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash -598268413, now seen corresponding path program 1 times [2021-11-06 10:23:26,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:23:26,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966151273] [2021-11-06 10:23:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:23:26,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:23:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:23:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:23:30,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:23:30,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966151273] [2021-11-06 10:23:30,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966151273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:23:30,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:23:30,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:23:30,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830586230] [2021-11-06 10:23:30,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:23:30,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:23:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:23:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:23:30,481 INFO L87 Difference]: Start difference. First operand 981 states and 1083 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 10:23:46,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:23:46,081 INFO L93 Difference]: Finished difference Result 1523 states and 1680 transitions. [2021-11-06 10:23:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:23:46,081 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 10:23:46,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:23:46,083 INFO L225 Difference]: With dead ends: 1523 [2021-11-06 10:23:46,083 INFO L226 Difference]: Without dead ends: 1292 [2021-11-06 10:23:46,084 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:23:46,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-11-06 10:23:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1051. [2021-11-06 10:23:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1036 states have (on average 1.113899613899614) internal successors, (1154), 1050 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:23:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1154 transitions. [2021-11-06 10:23:46,138 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1154 transitions. Word has length 96 [2021-11-06 10:23:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:23:46,139 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1154 transitions. [2021-11-06 10:23:46,139 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 10:23:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1154 transitions. [2021-11-06 10:23:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:23:46,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:23:46,140 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 10:23:46,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-06 10:23:46,140 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:23:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:23:46,140 INFO L85 PathProgramCache]: Analyzing trace with hash 443934440, now seen corresponding path program 1 times [2021-11-06 10:23:46,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:23:46,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008043071] [2021-11-06 10:23:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:23:46,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:23:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:24:00,657 INFO 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 10:24:00,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:24:00,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008043071] [2021-11-06 10:24:00,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008043071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:24:00,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:24:00,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-06 10:24:00,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198007843] [2021-11-06 10:24:00,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-06 10:24:00,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:24:00,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-06 10:24:00,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=848, Unknown=0, NotChecked=0, Total=930 [2021-11-06 10:24:00,658 INFO L87 Difference]: Start difference. First operand 1051 states and 1154 transitions. Second operand has 31 states, 31 states have (on average 3.161290322580645) internal successors, (98), 31 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 10:24:56,001 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification. DAG size of input: 159 DAG size of output: 108 [2021-11-06 10:25:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:25:37,046 INFO L93 Difference]: Finished difference Result 1462 states and 1608 transitions. [2021-11-06 10:25:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-06 10:25:37,048 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.161290322580645) internal successors, (98), 31 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 10:25:37,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:25:37,049 INFO L225 Difference]: With dead ends: 1462 [2021-11-06 10:25:37,049 INFO L226 Difference]: Without dead ends: 1306 [2021-11-06 10:25:37,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=662, Invalid=2876, Unknown=2, NotChecked=0, Total=3540 [2021-11-06 10:25:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-11-06 10:25:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1059. [2021-11-06 10:25:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1044 states have (on average 1.1149425287356323) internal successors, (1164), 1058 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:25:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1164 transitions. [2021-11-06 10:25:37,110 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1164 transitions. Word has length 98 [2021-11-06 10:25:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:25:37,111 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 1164 transitions. [2021-11-06 10:25:37,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.161290322580645) internal successors, (98), 31 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 10:25:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1164 transitions. [2021-11-06 10:25:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 10:25:37,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:25:37,112 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:25:37,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-06 10:25:37,112 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:25:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:25:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1726985537, now seen corresponding path program 1 times [2021-11-06 10:25:37,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:25:37,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588157517] [2021-11-06 10:25:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:25:37,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:25:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:25:43,006 INFO 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 10:25:43,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:25:43,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588157517] [2021-11-06 10:25:43,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588157517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:25:43,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:25:43,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-06 10:25:43,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631387119] [2021-11-06 10:25:43,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-06 10:25:43,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:25:43,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-06 10:25:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:25:43,008 INFO L87 Difference]: Start difference. First operand 1059 states and 1164 transitions. Second operand has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:26:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:26:34,293 INFO L93 Difference]: Finished difference Result 2637 states and 2914 transitions. [2021-11-06 10:26:34,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-06 10:26:34,293 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-06 10:26:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:26:34,296 INFO L225 Difference]: With dead ends: 2637 [2021-11-06 10:26:34,297 INFO L226 Difference]: Without dead ends: 2633 [2021-11-06 10:26:34,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4794 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=2557, Invalid=12943, Unknown=0, NotChecked=0, Total=15500 [2021-11-06 10:26:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2021-11-06 10:26:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 1268. [2021-11-06 10:26:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1253 states have (on average 1.1189146049481244) internal successors, (1402), 1267 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:26:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1402 transitions. [2021-11-06 10:26:34,385 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1402 transitions. Word has length 100 [2021-11-06 10:26:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:26:34,385 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1402 transitions. [2021-11-06 10:26:34,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:26:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1402 transitions. [2021-11-06 10:26:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 10:26:34,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:26:34,387 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 10:26:34,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-06 10:26:34,387 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:26:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:26:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash -218236382, now seen corresponding path program 1 times [2021-11-06 10:26:34,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:26:34,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908855911] [2021-11-06 10:26:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:26:34,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:26:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:26:37,723 INFO 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 10:26:37,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:26:37,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908855911] [2021-11-06 10:26:37,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908855911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:26:37,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:26:37,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:26:37,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631931928] [2021-11-06 10:26:37,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:26:37,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:26:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:26:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:26:37,725 INFO L87 Difference]: Start difference. First operand 1268 states and 1402 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 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 10:26:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:26:44,552 INFO L93 Difference]: Finished difference Result 2042 states and 2266 transitions. [2021-11-06 10:26:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:26:44,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 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 10:26:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:26:44,555 INFO L225 Difference]: With dead ends: 2042 [2021-11-06 10:26:44,555 INFO L226 Difference]: Without dead ends: 1728 [2021-11-06 10:26:44,555 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:26:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-11-06 10:26:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1380. [2021-11-06 10:26:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1365 states have (on average 1.1223443223443224) internal successors, (1532), 1379 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:26:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1532 transitions. [2021-11-06 10:26:44,645 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1532 transitions. Word has length 101 [2021-11-06 10:26:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:26:44,645 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 1532 transitions. [2021-11-06 10:26:44,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 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 10:26:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1532 transitions. [2021-11-06 10:26:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 10:26:44,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:26:44,646 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 10:26:44,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-06 10:26:44,647 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:26:44,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:26:44,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1471623646, now seen corresponding path program 1 times [2021-11-06 10:26:44,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:26:44,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821348629] [2021-11-06 10:26:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:26:44,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:26:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:26:45,773 INFO 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 10:26:45,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:26:45,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821348629] [2021-11-06 10:26:45,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821348629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:26:45,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:26:45,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:26:45,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103636443] [2021-11-06 10:26:45,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:26:45,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:26:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:26:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:26:45,774 INFO L87 Difference]: Start difference. First operand 1380 states and 1532 transitions. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 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 10:26:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:26:57,638 INFO L93 Difference]: Finished difference Result 3325 states and 3699 transitions. [2021-11-06 10:26:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-06 10:26:57,639 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 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 10:26:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:26:57,642 INFO L225 Difference]: With dead ends: 3325 [2021-11-06 10:26:57,642 INFO L226 Difference]: Without dead ends: 2865 [2021-11-06 10:26:57,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2021-11-06 10:26:57,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-11-06 10:26:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1422. [2021-11-06 10:26:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1407 states have (on average 1.1208244491826582) internal successors, (1577), 1421 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:26:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1577 transitions. [2021-11-06 10:26:57,759 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1577 transitions. Word has length 105 [2021-11-06 10:26:57,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:26:57,759 INFO L470 AbstractCegarLoop]: Abstraction has 1422 states and 1577 transitions. [2021-11-06 10:26:57,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 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 10:26:57,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1577 transitions. [2021-11-06 10:26:57,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 10:26:57,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:26:57,760 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 10:26:57,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-06 10:26:57,761 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:26:57,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:26:57,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1598625937, now seen corresponding path program 1 times [2021-11-06 10:26:57,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:26:57,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744613682] [2021-11-06 10:26:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:26:57,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:27:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:27:00,857 INFO 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 10:27:00,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:27:00,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744613682] [2021-11-06 10:27:00,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744613682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:27:00,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:27:00,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:27:00,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633105036] [2021-11-06 10:27:00,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:27:00,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:27:00,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:27:00,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:27:00,858 INFO L87 Difference]: Start difference. First operand 1422 states and 1577 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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 10:27:09,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:27:09,699 INFO L93 Difference]: Finished difference Result 2000 states and 2202 transitions. [2021-11-06 10:27:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:27:09,699 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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 10:27:09,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:27:09,702 INFO L225 Difference]: With dead ends: 2000 [2021-11-06 10:27:09,702 INFO L226 Difference]: Without dead ends: 1753 [2021-11-06 10:27:09,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:27:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-11-06 10:27:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1340. [2021-11-06 10:27:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1325 states have (on average 1.1230188679245283) internal successors, (1488), 1339 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:27:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1488 transitions. [2021-11-06 10:27:09,792 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1488 transitions. Word has length 107 [2021-11-06 10:27:09,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:27:09,792 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1488 transitions. [2021-11-06 10:27:09,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 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 10:27:09,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1488 transitions. [2021-11-06 10:27:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 10:27:09,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:27:09,793 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 10:27:09,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-06 10:27:09,794 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:27:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:27:09,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1252400843, now seen corresponding path program 1 times [2021-11-06 10:27:09,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:27:09,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850260947] [2021-11-06 10:27:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:27:09,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:27:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:27:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:27:11,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:27:11,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850260947] [2021-11-06 10:27:11,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850260947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:27:11,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:27:11,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:27:11,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812623006] [2021-11-06 10:27:11,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:27:11,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:27:11,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:27:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:27:11,182 INFO L87 Difference]: Start difference. First operand 1340 states and 1488 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 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 10:27:16,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:27:16,333 INFO L93 Difference]: Finished difference Result 2722 states and 3018 transitions. [2021-11-06 10:27:16,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 10:27:16,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 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 10:27:16,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:27:16,337 INFO L225 Difference]: With dead ends: 2722 [2021-11-06 10:27:16,337 INFO L226 Difference]: Without dead ends: 2211 [2021-11-06 10:27:16,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:27:16,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2021-11-06 10:27:16,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 1381. [2021-11-06 10:27:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1366 states have (on average 1.1215226939970717) internal successors, (1532), 1380 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:27:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1532 transitions. [2021-11-06 10:27:16,434 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1532 transitions. Word has length 108 [2021-11-06 10:27:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:27:16,434 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1532 transitions. [2021-11-06 10:27:16,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 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 10:27:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1532 transitions. [2021-11-06 10:27:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 10:27:16,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:27:16,435 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 10:27:16,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-06 10:27:16,435 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:27:16,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:27:16,436 INFO L85 PathProgramCache]: Analyzing trace with hash 666124621, now seen corresponding path program 1 times [2021-11-06 10:27:16,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:27:16,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569626480] [2021-11-06 10:27:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:27:16,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:27:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:27:21,216 INFO 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 10:27:21,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:27:21,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569626480] [2021-11-06 10:27:21,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569626480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:27:21,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:27:21,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:27:21,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257516144] [2021-11-06 10:27:21,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:27:21,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:27:21,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:27:21,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:27:21,218 INFO L87 Difference]: Start difference. First operand 1381 states and 1532 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:27:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:27:25,750 INFO L93 Difference]: Finished difference Result 2591 states and 2865 transitions. [2021-11-06 10:27:25,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:27:25,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 10:27:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:27:25,753 INFO L225 Difference]: With dead ends: 2591 [2021-11-06 10:27:25,753 INFO L226 Difference]: Without dead ends: 1799 [2021-11-06 10:27:25,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:27:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-11-06 10:27:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1357. [2021-11-06 10:27:25,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1342 states have (on average 1.1214605067064083) internal successors, (1505), 1356 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:27:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1505 transitions. [2021-11-06 10:27:25,845 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1505 transitions. Word has length 108 [2021-11-06 10:27:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:27:25,845 INFO L470 AbstractCegarLoop]: Abstraction has 1357 states and 1505 transitions. [2021-11-06 10:27:25,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:27:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1505 transitions. [2021-11-06 10:27:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 10:27:25,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:27:25,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:27:25,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-06 10:27:25,847 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:27:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:27:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash -208776075, now seen corresponding path program 1 times [2021-11-06 10:27:25,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:27:25,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831294552] [2021-11-06 10:27:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:27:25,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:27:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:27:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:27:30,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:27:30,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831294552] [2021-11-06 10:27:30,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831294552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:27:30,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:27:30,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:27:30,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945177448] [2021-11-06 10:27:30,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:27:30,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:27:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:27:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:27:30,350 INFO L87 Difference]: Start difference. First operand 1357 states and 1505 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:27:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:27:45,933 INFO L93 Difference]: Finished difference Result 1925 states and 2122 transitions. [2021-11-06 10:27:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:27:45,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-06 10:27:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:27:45,935 INFO L225 Difference]: With dead ends: 1925 [2021-11-06 10:27:45,935 INFO L226 Difference]: Without dead ends: 1736 [2021-11-06 10:27:45,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:27:45,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2021-11-06 10:27:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1343. [2021-11-06 10:27:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1328 states have (on average 1.1197289156626506) internal successors, (1487), 1342 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:27:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1487 transitions. [2021-11-06 10:27:46,029 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1487 transitions. Word has length 109 [2021-11-06 10:27:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:27:46,029 INFO L470 AbstractCegarLoop]: Abstraction has 1343 states and 1487 transitions. [2021-11-06 10:27:46,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:27:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1487 transitions. [2021-11-06 10:27:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 10:27:46,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:27:46,030 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:27:46,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-06 10:27:46,030 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:27:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:27:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1641786257, now seen corresponding path program 1 times [2021-11-06 10:27:46,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:27:46,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819656206] [2021-11-06 10:27:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:27:46,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:27:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:27:46,890 INFO 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 10:27:46,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:27:46,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819656206] [2021-11-06 10:27:46,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819656206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:27:46,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:27:46,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:27:46,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671492237] [2021-11-06 10:27:46,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 10:27:46,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:27:46,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 10:27:46,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-06 10:27:46,892 INFO L87 Difference]: Start difference. First operand 1343 states and 1487 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:02,299 INFO L93 Difference]: Finished difference Result 2299 states and 2571 transitions. [2021-11-06 10:28:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 10:28:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-06 10:28:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:02,301 INFO L225 Difference]: With dead ends: 2299 [2021-11-06 10:28:02,301 INFO L226 Difference]: Without dead ends: 2016 [2021-11-06 10:28:02,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2021-11-06 10:28:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-11-06 10:28:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1499. [2021-11-06 10:28:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1484 states have (on average 1.112533692722372) internal successors, (1651), 1498 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1651 transitions. [2021-11-06 10:28:02,405 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1651 transitions. Word has length 109 [2021-11-06 10:28:02,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:02,405 INFO L470 AbstractCegarLoop]: Abstraction has 1499 states and 1651 transitions. [2021-11-06 10:28:02,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1651 transitions. [2021-11-06 10:28:02,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 10:28:02,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:02,407 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:02,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-06 10:28:02,407 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:28:02,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:02,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1305398959, now seen corresponding path program 1 times [2021-11-06 10:28:02,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:02,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298097060] [2021-11-06 10:28:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:02,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:03,310 INFO 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 10:28:03,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:03,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298097060] [2021-11-06 10:28:03,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298097060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:03,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:03,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:28:03,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171911303] [2021-11-06 10:28:03,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:28:03,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:28:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:28:03,312 INFO L87 Difference]: Start difference. First operand 1499 states and 1651 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 11 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:24,732 INFO L93 Difference]: Finished difference Result 3655 states and 4076 transitions. [2021-11-06 10:28:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-06 10:28:24,733 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 11 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-06 10:28:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:24,736 INFO L225 Difference]: With dead ends: 3655 [2021-11-06 10:28:24,736 INFO L226 Difference]: Without dead ends: 3329 [2021-11-06 10:28:24,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=581, Invalid=1969, Unknown=0, NotChecked=0, Total=2550 [2021-11-06 10:28:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2021-11-06 10:28:24,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 1461. [2021-11-06 10:28:24,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1446 states have (on average 1.1141078838174274) internal successors, (1611), 1460 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1611 transitions. [2021-11-06 10:28:24,851 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1611 transitions. Word has length 109 [2021-11-06 10:28:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:24,851 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1611 transitions. [2021-11-06 10:28:24,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 11 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1611 transitions. [2021-11-06 10:28:24,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 10:28:24,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:24,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:24,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-06 10:28:24,859 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:28:24,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:24,859 INFO L85 PathProgramCache]: Analyzing trace with hash 681220806, now seen corresponding path program 1 times [2021-11-06 10:28:24,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:24,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697667127] [2021-11-06 10:28:24,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:24,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:26,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:26,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697667127] [2021-11-06 10:28:26,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697667127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:26,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:26,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:28:26,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117609970] [2021-11-06 10:28:26,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:28:26,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:28:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:28:26,132 INFO L87 Difference]: Start difference. First operand 1461 states and 1611 transitions. Second operand has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:43,370 INFO L93 Difference]: Finished difference Result 2199 states and 2411 transitions. [2021-11-06 10:28:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-06 10:28:43,370 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-06 10:28:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:43,372 INFO L225 Difference]: With dead ends: 2199 [2021-11-06 10:28:43,372 INFO L226 Difference]: Without dead ends: 1983 [2021-11-06 10:28:43,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=443, Invalid=1279, Unknown=0, NotChecked=0, Total=1722 [2021-11-06 10:28:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2021-11-06 10:28:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1421. [2021-11-06 10:28:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1406 states have (on average 1.1173541963015647) internal successors, (1571), 1420 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1571 transitions. [2021-11-06 10:28:43,495 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1571 transitions. Word has length 111 [2021-11-06 10:28:43,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:43,495 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 1571 transitions. [2021-11-06 10:28:43,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1571 transitions. [2021-11-06 10:28:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 10:28:43,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:43,497 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:43,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-06 10:28:43,497 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:28:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1848424134, now seen corresponding path program 1 times [2021-11-06 10:28:43,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:43,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517057010] [2021-11-06 10:28:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:43,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:45,685 INFO 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 10:28:45,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:45,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517057010] [2021-11-06 10:28:45,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517057010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:45,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:45,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-06 10:28:45,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989015085] [2021-11-06 10:28:45,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 10:28:45,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 10:28:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:28:45,687 INFO L87 Difference]: Start difference. First operand 1421 states and 1571 transitions. Second operand has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:24,933 INFO L93 Difference]: Finished difference Result 3007 states and 3286 transitions. [2021-11-06 10:29:24,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-06 10:29:24,934 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-06 10:29:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:24,936 INFO L225 Difference]: With dead ends: 3007 [2021-11-06 10:29:24,936 INFO L226 Difference]: Without dead ends: 2596 [2021-11-06 10:29:24,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3420 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=2333, Invalid=9223, Unknown=0, NotChecked=0, Total=11556 [2021-11-06 10:29:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2021-11-06 10:29:25,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 1441. [2021-11-06 10:29:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1426 states have (on average 1.1164095371669005) internal successors, (1592), 1440 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1592 transitions. [2021-11-06 10:29:25,046 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1592 transitions. Word has length 114 [2021-11-06 10:29:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:25,046 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1592 transitions. [2021-11-06 10:29:25,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1592 transitions. [2021-11-06 10:29:25,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 10:29:25,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:25,047 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:25,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-06 10:29:25,048 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:29:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1794031236, now seen corresponding path program 1 times [2021-11-06 10:29:25,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:25,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946455433] [2021-11-06 10:29:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:25,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15