/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/sum10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:14:13,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:14:13,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:14:13,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:14:13,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:14:13,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:14:13,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:14:13,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:14:13,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:14:13,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:14:13,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:14:13,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:14:13,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:14:13,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:14:13,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:14:13,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:14:13,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:14:13,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:14:13,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:14:13,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:14:13,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:14:13,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:14:13,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:14:13,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:14:13,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:14:13,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:14:13,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:14:13,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:14:13,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:14:13,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:14:13,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:14:13,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:14:13,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:14:13,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:14:13,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:14:13,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:14:13,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:14:13,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:14:13,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:14:13,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:14:13,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:14:13,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:14:13,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:14:13,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:14:13,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:14:13,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:14:13,392 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:14:13,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:14:13,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:14:13,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:14:13,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:14:13,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:14:13,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:14:13,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:14:13,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:14:13,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:14:13,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:14:13,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:14:13,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:14:13,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:14:13,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:14:13,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:14:13,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:14:13,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:14:13,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:14:13,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:14:13,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:14:13,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:14:13,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:14:13,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:14:13,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:14:13,406 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:14:13,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:14:13,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:14:13,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:14:13,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:14:13,979 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:14:13,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum10-1.i [2020-10-27 04:14:14,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01a18420b/fbba570358f64ebe8668c135b6bd845e/FLAG6ed698924 [2020-10-27 04:14:15,038 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:14:15,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum10-1.i [2020-10-27 04:14:15,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01a18420b/fbba570358f64ebe8668c135b6bd845e/FLAG6ed698924 [2020-10-27 04:14:15,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01a18420b/fbba570358f64ebe8668c135b6bd845e [2020-10-27 04:14:15,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:14:15,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:14:15,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:14:15,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:14:15,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:14:15,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:15" (1/1) ... [2020-10-27 04:14:15,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8a761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15, skipping insertion in model container [2020-10-27 04:14:15,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:15" (1/1) ... [2020-10-27 04:14:15,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:14:15,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:14:15,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:14:15,680 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:14:15,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:14:15,733 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:14:15,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15 WrapperNode [2020-10-27 04:14:15,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:14:15,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:14:15,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:14:15,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:14:15,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15" (1/1) ... [2020-10-27 04:14:15,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15" (1/1) ... [2020-10-27 04:14:15,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15" (1/1) ... [2020-10-27 04:14:15,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15" (1/1) ... [2020-10-27 04:14:15,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15" (1/1) ... [2020-10-27 04:14:15,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15" (1/1) ... [2020-10-27 04:14:15,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15" (1/1) ... [2020-10-27 04:14:15,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:14:15,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:14:15,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:14:15,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:14:15,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:14:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:14:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:14:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:14:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-27 04:14:15,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:14:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:14:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:14:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:14:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:14:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:14:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:14:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:14:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-27 04:14:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:14:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:14:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:14:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:14:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:14:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:14:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:14:16,463 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:14:16,464 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:14:16,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:14:16 BoogieIcfgContainer [2020-10-27 04:14:16,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:14:16,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:14:16,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:14:16,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:14:16,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:14:15" (1/3) ... [2020-10-27 04:14:16,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf45e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:14:16, skipping insertion in model container [2020-10-27 04:14:16,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:15" (2/3) ... [2020-10-27 04:14:16,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf45e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:14:16, skipping insertion in model container [2020-10-27 04:14:16,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:14:16" (3/3) ... [2020-10-27 04:14:16,479 INFO L111 eAbstractionObserver]: Analyzing ICFG sum10-1.i [2020-10-27 04:14:16,495 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:14:16,502 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:14:16,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:14:16,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:14:16,568 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:14:16,568 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:14:16,568 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:14:16,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:14:16,569 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:14:16,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:14:16,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:14:16,596 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 04:14:16,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:14:16,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:16,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:16,610 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:16,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-27 04:14:16,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:16,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287132476] [2020-10-27 04:14:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:16,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:17,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:18,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:14:18,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:14:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2060 [2020-10-27 04:14:18,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:14:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:14:18,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:18,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:18,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:18,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:14:18,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:19,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:14:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:19,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:19,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:19,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:14:19,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:14:19,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:19,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:14:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:19,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:19,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:19,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:19,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:14:19,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:14:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:19,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:19,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:14:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:14:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:14:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:14:19,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287132476] [2020-10-27 04:14:19,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:14:19,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 04:14:19,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958251037] [2020-10-27 04:14:19,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 04:14:19,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:19,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 04:14:19,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:14:19,100 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 04:14:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:19,256 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 04:14:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 04:14:19,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 04:14:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:19,270 INFO L225 Difference]: With dead ends: 60 [2020-10-27 04:14:19,270 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 04:14:19,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:14:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 04:14:19,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 04:14:19,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 04:14:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 04:14:19,342 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 04:14:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:19,343 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 04:14:19,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 04:14:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 04:14:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:14:19,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:19,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:19,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:14:19,348 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:19,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1640105647, now seen corresponding path program 1 times [2020-10-27 04:14:19,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:19,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697233505] [2020-10-27 04:14:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:21,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:14:21,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:14:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1996 [2020-10-27 04:14:21,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:21,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:21,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:21,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:21,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:21,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:21,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:14:21,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:21,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:14:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:21,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:21,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:21,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:14:21,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:21,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:14:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:21,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:21,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:21,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:14:21,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:21,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:14:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:21,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:21,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:14:21,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:21,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:14:21,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697233505] [2020-10-27 04:14:21,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:14:21,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:14:21,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165387493] [2020-10-27 04:14:21,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:14:21,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:21,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:14:21,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:14:21,558 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-27 04:14:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:21,724 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-10-27 04:14:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:14:21,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 04:14:21,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:21,727 INFO L225 Difference]: With dead ends: 52 [2020-10-27 04:14:21,728 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 04:14:21,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:14:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 04:14:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 04:14:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 04:14:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-27 04:14:21,742 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2020-10-27 04:14:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:21,743 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-27 04:14:21,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:14:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-27 04:14:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 04:14:21,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:21,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:21,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:14:21,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:21,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1537402351, now seen corresponding path program 1 times [2020-10-27 04:14:21,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:21,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546315554] [2020-10-27 04:14:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:14:26,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:26,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:14:26,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:26,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:26,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:26,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:14:26,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:14:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:14:26,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:14:26,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:26,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 04:14:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:14:26,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:26,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 04:14:26,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:26,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:26,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:14:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:27,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:27,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:14:27,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:14:27,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 04:14:27,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546315554] [2020-10-27 04:14:27,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:27,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:14:27,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970390879] [2020-10-27 04:14:27,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:14:27,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:27,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:14:27,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:14:27,027 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-27 04:14:27,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:27,300 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-10-27 04:14:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:14:27,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-27 04:14:27,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:27,301 INFO L225 Difference]: With dead ends: 57 [2020-10-27 04:14:27,302 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 04:14:27,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:14:27,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 04:14:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 04:14:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 04:14:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 04:14:27,326 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 42 [2020-10-27 04:14:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:27,327 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 04:14:27,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:14:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 04:14:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:14:27,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:27,330 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:27,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:14:27,333 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:27,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1486624559, now seen corresponding path program 2 times [2020-10-27 04:14:27,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:27,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377379607] [2020-10-27 04:14:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:27,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:14:32,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:32,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:14:32,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:32,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:32,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:14:32,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:32,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:32,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:14:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:14:32,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 04:14:32,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:32,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 04:14:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:14:32,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:14:32,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:14:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:14:32,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 04:14:32,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:32,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 04:14:32,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377379607] [2020-10-27 04:14:32,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:32,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:14:32,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53184169] [2020-10-27 04:14:32,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:14:32,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:32,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:14:32,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:14:32,688 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2020-10-27 04:14:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:32,982 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-27 04:14:32,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:14:32,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-27 04:14:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:32,984 INFO L225 Difference]: With dead ends: 63 [2020-10-27 04:14:32,984 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 04:14:32,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:14:32,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 04:14:32,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-27 04:14:32,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 04:14:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-27 04:14:33,000 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 50 [2020-10-27 04:14:33,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:33,001 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-27 04:14:33,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:14:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-27 04:14:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 04:14:33,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:33,004 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:33,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:14:33,004 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:33,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:33,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1972987281, now seen corresponding path program 3 times [2020-10-27 04:14:33,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:33,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127772331] [2020-10-27 04:14:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:38,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 04:14:38,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:38,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:14:38,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:38,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:38,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:14:38,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:38,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:14:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:38,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:38,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 04:14:38,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 04:14:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:38,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:38,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:38,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 04:14:38,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:38,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:38,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:14:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:38,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:38,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:38,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:14:38,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:38,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 04:14:38,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127772331] [2020-10-27 04:14:38,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:38,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:14:38,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169890835] [2020-10-27 04:14:38,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:14:38,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:38,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:14:38,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:14:38,349 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2020-10-27 04:14:38,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:38,672 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 04:14:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:14:38,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 04:14:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:38,675 INFO L225 Difference]: With dead ends: 69 [2020-10-27 04:14:38,675 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:14:38,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:14:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:14:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-27 04:14:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 04:14:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-27 04:14:38,694 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 58 [2020-10-27 04:14:38,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:38,694 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-27 04:14:38,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:14:38,694 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-27 04:14:38,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:14:38,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:38,699 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:38,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:14:38,699 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:38,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1550094417, now seen corresponding path program 4 times [2020-10-27 04:14:38,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:38,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859411909] [2020-10-27 04:14:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 04:14:43,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:43,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:43,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:43,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:43,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:43,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:14:43,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:14:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:43,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:14:43,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:14:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:14:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:14:44,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:14:44,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:44,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:14:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:44,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:14:44,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:14:44,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:44,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 48 proven. 112 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 04:14:44,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859411909] [2020-10-27 04:14:44,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:44,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:14:44,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045488145] [2020-10-27 04:14:44,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:14:44,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:44,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:14:44,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:14:44,080 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-10-27 04:14:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:44,422 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-27 04:14:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:14:44,423 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 04:14:44,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:44,424 INFO L225 Difference]: With dead ends: 75 [2020-10-27 04:14:44,424 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 04:14:44,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:14:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 04:14:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-27 04:14:44,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:14:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-27 04:14:44,441 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 66 [2020-10-27 04:14:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:44,441 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-27 04:14:44,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:14:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-27 04:14:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 04:14:44,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:44,444 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:44,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:14:44,445 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:44,445 INFO L82 PathProgramCache]: Analyzing trace with hash 407660817, now seen corresponding path program 5 times [2020-10-27 04:14:44,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:44,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184103604] [2020-10-27 04:14:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:44,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:49,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:14:49,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:14:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:14:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:49,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:14:49,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:49,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:14:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:49,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:14:49,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:49,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:14:49,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:14:49,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:49,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:14:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:49,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:14:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 04:14:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:14:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:14:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:49,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:49,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:14:49,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:49,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 04:14:49,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:14:49,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 75 proven. 175 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 04:14:49,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184103604] [2020-10-27 04:14:49,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:49,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:14:49,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589145927] [2020-10-27 04:14:49,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:14:49,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:49,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:14:49,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:14:49,888 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 15 states. [2020-10-27 04:14:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:50,321 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-27 04:14:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:14:50,322 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 04:14:50,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:50,323 INFO L225 Difference]: With dead ends: 81 [2020-10-27 04:14:50,323 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 04:14:50,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:14:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 04:14:50,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-27 04:14:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 04:14:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-27 04:14:50,334 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 74 [2020-10-27 04:14:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:50,334 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-27 04:14:50,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:14:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-27 04:14:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:14:50,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:50,338 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:50,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:14:50,339 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:50,341 INFO L82 PathProgramCache]: Analyzing trace with hash -990384175, now seen corresponding path program 6 times [2020-10-27 04:14:50,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:50,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307946917] [2020-10-27 04:14:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:55,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 04:14:55,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:55,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:14:55,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:55,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:55,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:55,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:55,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:55,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:55,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:14:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:55,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:14:55,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 04:14:55,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:55,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:55,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:55,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:55,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:55,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:14:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:55,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:14:55,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:55,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 04:14:55,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:55,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:55,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:55,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:14:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:55,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:55,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:14:55,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:55,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 04:14:55,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:55,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:55,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:55,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 108 proven. 252 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:14:55,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307946917] [2020-10-27 04:14:55,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:55,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:14:55,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022621588] [2020-10-27 04:14:55,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:14:55,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:55,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:14:55,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:14:55,873 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 17 states. [2020-10-27 04:14:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:56,367 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-10-27 04:14:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:14:56,368 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-27 04:14:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:56,369 INFO L225 Difference]: With dead ends: 87 [2020-10-27 04:14:56,369 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 04:14:56,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:14:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 04:14:56,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-27 04:14:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 04:14:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-27 04:14:56,383 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 82 [2020-10-27 04:14:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:56,384 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-27 04:14:56,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:14:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-27 04:14:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 04:14:56,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:56,386 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:56,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:14:56,386 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:56,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:56,387 INFO L82 PathProgramCache]: Analyzing trace with hash -852613999, now seen corresponding path program 7 times [2020-10-27 04:14:56,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:56,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049114080] [2020-10-27 04:14:56,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:01,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 04:15:01,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:15:01,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:01,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:01,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:01,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:01,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:01,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:01,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:15:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:01,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:15:01,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 04:15:01,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:15:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:01,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:15:01,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:15:01,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:15:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:01,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:15:01,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 04:15:01,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 147 proven. 343 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 04:15:01,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049114080] [2020-10-27 04:15:01,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:01,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:15:01,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096334518] [2020-10-27 04:15:01,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:15:01,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:01,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:15:01,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:15:01,958 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 19 states. [2020-10-27 04:15:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:02,518 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-10-27 04:15:02,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:15:02,519 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 90 [2020-10-27 04:15:02,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:02,520 INFO L225 Difference]: With dead ends: 93 [2020-10-27 04:15:02,520 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 04:15:02,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:15:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 04:15:02,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-27 04:15:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 04:15:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-27 04:15:02,533 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 90 [2020-10-27 04:15:02,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:02,533 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-27 04:15:02,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:15:02,534 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-27 04:15:02,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:15:02,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:02,535 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:02,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:15:02,535 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:02,536 INFO L82 PathProgramCache]: Analyzing trace with hash -623507631, now seen corresponding path program 8 times [2020-10-27 04:15:02,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:02,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707063598] [2020-10-27 04:15:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:07,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:07,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:15:07,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:07,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:15:07,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:07,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:07,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:07,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:07,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:07,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:07,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:07,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:07,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:07,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:15:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:07,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:07,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:07,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:15:07,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 04:15:07,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:15:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:07,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:15:08,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:08,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 04:15:08,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:15:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:15:08,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 04:15:08,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:08,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 192 proven. 448 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 04:15:08,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707063598] [2020-10-27 04:15:08,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:08,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:15:08,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562611464] [2020-10-27 04:15:08,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:15:08,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:08,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:15:08,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:15:08,137 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 21 states. [2020-10-27 04:15:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:08,855 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-10-27 04:15:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:15:08,856 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 98 [2020-10-27 04:15:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:08,859 INFO L225 Difference]: With dead ends: 99 [2020-10-27 04:15:08,859 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 04:15:08,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:15:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 04:15:08,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-27 04:15:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 04:15:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-27 04:15:08,881 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 98 [2020-10-27 04:15:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:08,881 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-27 04:15:08,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:15:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-27 04:15:08,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:15:08,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:08,884 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:08,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:15:08,884 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:08,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:08,885 INFO L82 PathProgramCache]: Analyzing trace with hash -956917743, now seen corresponding path program 9 times [2020-10-27 04:15:08,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:08,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813383642] [2020-10-27 04:15:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:13,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:13,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:15:13,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 04:15:13,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:14,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:14,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:15:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:15:14,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:14,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 04:15:14,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:14,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:15:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:15:14,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 04:15:14,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:14,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:15:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:15:14,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:14,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 04:15:14,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:14,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 243 proven. 567 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 04:15:14,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813383642] [2020-10-27 04:15:14,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:14,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:15:14,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339966383] [2020-10-27 04:15:14,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:15:14,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:14,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:15:14,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:15:14,596 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 23 states. [2020-10-27 04:15:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:15,271 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2020-10-27 04:15:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:15:15,276 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-10-27 04:15:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:15,277 INFO L225 Difference]: With dead ends: 103 [2020-10-27 04:15:15,277 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 04:15:15,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:15:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 04:15:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-27 04:15:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 04:15:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-27 04:15:15,295 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 106 [2020-10-27 04:15:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:15,296 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-27 04:15:15,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:15:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-27 04:15:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:15:15,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:15,297 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:15,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:15:15,297 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:15,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1984506159, now seen corresponding path program 10 times [2020-10-27 04:15:15,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:15,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915382907] [2020-10-27 04:15:15,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:15:15,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 04:15:15,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:15:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:15:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:15:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:15,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:15:15,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:15,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:15:15,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:15,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:15:15,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:15:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:15,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:15,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:15:15,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:15:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:15:15,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915382907] [2020-10-27 04:15:15,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:15:15,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:15:15,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662008589] [2020-10-27 04:15:15,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:15:15,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:15,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:15:15,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:15:15,727 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 4 states. [2020-10-27 04:15:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:15,833 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-27 04:15:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:15:15,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-10-27 04:15:15,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:15,836 INFO L225 Difference]: With dead ends: 101 [2020-10-27 04:15:15,836 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 04:15:15,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:15:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 04:15:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-27 04:15:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 04:15:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-27 04:15:15,854 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 114 [2020-10-27 04:15:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:15,858 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-27 04:15:15,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:15:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-27 04:15:15,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 04:15:15,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:15,860 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:15,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:15:15,861 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:15,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:15,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1443310159, now seen corresponding path program 1 times [2020-10-27 04:15:15,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:15,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900103643] [2020-10-27 04:15:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:16,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:15:16,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:16,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-27 04:15:16,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:15:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:15:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:15:16,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:16,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:16,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:16,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:16,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:16,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:16,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:16,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:16,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:16,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:16,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:16,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:16,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:15:16,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:16,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:16,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:16,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:16,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:16,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:15:16,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:15:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:16,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:16,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:16,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:16,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:15:16,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:16,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:15:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:16,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:15:16,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900103643] [2020-10-27 04:15:16,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:16,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 04:15:16,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786426404] [2020-10-27 04:15:16,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:15:16,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:16,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:15:16,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:15:16,641 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-10-27 04:15:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:16,731 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-10-27 04:15:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:15:16,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-27 04:15:16,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:16,735 INFO L225 Difference]: With dead ends: 103 [2020-10-27 04:15:16,735 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 04:15:16,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:15:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 04:15:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-27 04:15:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 04:15:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-27 04:15:16,748 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 116 [2020-10-27 04:15:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:16,751 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-27 04:15:16,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:15:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-27 04:15:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 04:15:16,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:16,752 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:16,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:15:16,753 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:16,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1334875725, now seen corresponding path program 2 times [2020-10-27 04:15:16,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:16,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661054962] [2020-10-27 04:15:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:17,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:17,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 04:15:17,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-27 04:15:17,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:15:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:15:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:15:17,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:17,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:17,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:17,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:17,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:17,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:17,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:17,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:17,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:17,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:15:17,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:17,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:17,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:15:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:15:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:17,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:17,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:17,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 04:15:17,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:15:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:15:17,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661054962] [2020-10-27 04:15:17,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:17,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 04:15:17,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885772303] [2020-10-27 04:15:17,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:15:17,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:17,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:15:17,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:15:17,648 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 6 states. [2020-10-27 04:15:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:17,781 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-27 04:15:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:15:17,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-27 04:15:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:17,783 INFO L225 Difference]: With dead ends: 105 [2020-10-27 04:15:17,783 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 04:15:17,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:15:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 04:15:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-27 04:15:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 04:15:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-27 04:15:17,793 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 118 [2020-10-27 04:15:17,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:17,793 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-27 04:15:17,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:15:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-27 04:15:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 04:15:17,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:17,796 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:17,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:15:17,796 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:17,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:17,797 INFO L82 PathProgramCache]: Analyzing trace with hash 208599755, now seen corresponding path program 3 times [2020-10-27 04:15:17,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:17,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263891117] [2020-10-27 04:15:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:17,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:19,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 04:15:19,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-27 04:15:19,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:15:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:15:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:15:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:19,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:19,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:19,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:19,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:19,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:19,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:15:19,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:19,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:19,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:19,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:19,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:15:19,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:15:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:19,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:19,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:19,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:19,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:15:19,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:19,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:15:19,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:19,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:15:19,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263891117] [2020-10-27 04:15:19,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:19,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:15:19,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468198727] [2020-10-27 04:15:19,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:15:19,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:15:19,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:15:19,437 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 7 states. [2020-10-27 04:15:19,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:19,556 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-27 04:15:19,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:15:19,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-27 04:15:19,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:19,559 INFO L225 Difference]: With dead ends: 107 [2020-10-27 04:15:19,560 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 04:15:19,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:15:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 04:15:19,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-27 04:15:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 04:15:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-27 04:15:19,576 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-27 04:15:19,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:19,576 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-27 04:15:19,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:15:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-27 04:15:19,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 04:15:19,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:19,580 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:19,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:15:19,580 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:19,581 INFO L82 PathProgramCache]: Analyzing trace with hash 189151177, now seen corresponding path program 4 times [2020-10-27 04:15:19,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:19,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458121151] [2020-10-27 04:15:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:15:21,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-10-27 04:15:21,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:15:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:15:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:15:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:21,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:21,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:21,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:21,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:15:21,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:21,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:15:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 04:15:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:21,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:21,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:15:21,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:15:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:15:21,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458121151] [2020-10-27 04:15:21,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:21,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 04:15:21,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169876174] [2020-10-27 04:15:21,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:15:21,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:15:21,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:15:21,216 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 8 states. [2020-10-27 04:15:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:21,320 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-27 04:15:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:15:21,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-27 04:15:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:21,321 INFO L225 Difference]: With dead ends: 109 [2020-10-27 04:15:21,321 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 04:15:21,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:15:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 04:15:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-27 04:15:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 04:15:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-27 04:15:21,328 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-27 04:15:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:21,329 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-27 04:15:21,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:15:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-27 04:15:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 04:15:21,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:21,330 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:21,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:15:21,331 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:21,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:21,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1321063097, now seen corresponding path program 5 times [2020-10-27 04:15:21,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:21,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868337267] [2020-10-27 04:15:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:22,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 04:15:22,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:22,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-10-27 04:15:22,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:15:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:15:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:15:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:22,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:22,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:22,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:22,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:22,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:22,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:15:22,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:22,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:22,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:22,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:22,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:15:22,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 04:15:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:22,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:22,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:15:22,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:15:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:15:22,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868337267] [2020-10-27 04:15:22,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:22,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:15:22,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64245169] [2020-10-27 04:15:22,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:15:22,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:22,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:15:22,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:15:22,779 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-27 04:15:22,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:22,934 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-27 04:15:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:15:22,935 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-27 04:15:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:22,936 INFO L225 Difference]: With dead ends: 111 [2020-10-27 04:15:22,936 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 04:15:22,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:15:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 04:15:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-27 04:15:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 04:15:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-27 04:15:22,950 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-27 04:15:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:22,950 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-27 04:15:22,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:15:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-27 04:15:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 04:15:22,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:22,952 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:22,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:15:22,953 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:22,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:22,953 INFO L82 PathProgramCache]: Analyzing trace with hash -938034363, now seen corresponding path program 6 times [2020-10-27 04:15:22,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:22,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060358205] [2020-10-27 04:15:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:24,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:24,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 04:15:24,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:24,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1558 [2020-10-27 04:15:24,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:15:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:15:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:15:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:24,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:24,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:24,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:24,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:24,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:24,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:24,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:24,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:24,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:24,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:24,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:15:24,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:24,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:24,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:24,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:24,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:24,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:15:24,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:24,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:24,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:15:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:24,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:24,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:24,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:24,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:15:24,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:15:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:15:24,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060358205] [2020-10-27 04:15:24,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:24,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 04:15:24,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432538074] [2020-10-27 04:15:24,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:15:24,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:24,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:15:24,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:15:24,725 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 10 states. [2020-10-27 04:15:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:24,889 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-27 04:15:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:15:24,889 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-10-27 04:15:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:24,891 INFO L225 Difference]: With dead ends: 113 [2020-10-27 04:15:24,891 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 04:15:24,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:15:24,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 04:15:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-27 04:15:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 04:15:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-27 04:15:24,898 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-27 04:15:24,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:24,899 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-27 04:15:24,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:15:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-27 04:15:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 04:15:24,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:24,900 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:24,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:15:24,901 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:24,901 INFO L82 PathProgramCache]: Analyzing trace with hash 2080358851, now seen corresponding path program 7 times [2020-10-27 04:15:24,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:24,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223677356] [2020-10-27 04:15:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:26,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:26,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 04:15:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1923 [2020-10-27 04:15:26,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:15:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:26,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:26,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:26,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:26,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:26,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:26,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:26,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:26,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:26,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:26,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:26,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:26,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:15:26,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:26,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:26,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:26,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:26,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:15:26,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:26,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:26,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 04:15:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:26,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:27,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:27,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:15:27,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:15:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:27,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:15:27,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223677356] [2020-10-27 04:15:27,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:27,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:15:27,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412293606] [2020-10-27 04:15:27,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:15:27,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:27,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:15:27,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:15:27,017 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 11 states. [2020-10-27 04:15:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:27,169 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-27 04:15:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:15:27,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2020-10-27 04:15:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:27,172 INFO L225 Difference]: With dead ends: 115 [2020-10-27 04:15:27,172 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 04:15:27,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:15:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 04:15:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-27 04:15:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 04:15:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-27 04:15:27,179 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-27 04:15:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:27,179 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-27 04:15:27,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:15:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-27 04:15:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 04:15:27,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:27,181 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:27,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:15:27,181 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:27,182 INFO L82 PathProgramCache]: Analyzing trace with hash -641654591, now seen corresponding path program 8 times [2020-10-27 04:15:27,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:27,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981358200] [2020-10-27 04:15:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:29,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 04:15:29,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2478 [2020-10-27 04:15:29,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:15:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:29,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:29,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:29,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:29,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:29,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:29,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:29,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:29,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:15:29,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:29,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:29,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:29,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:29,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:15:29,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 04:15:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:29,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:29,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:29,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:15:29,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:15:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:15:29,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981358200] [2020-10-27 04:15:29,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:29,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 04:15:29,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034135044] [2020-10-27 04:15:29,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:15:29,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:29,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:15:29,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:15:29,889 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 12 states. [2020-10-27 04:15:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:30,035 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2020-10-27 04:15:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:15:30,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-10-27 04:15:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:30,036 INFO L225 Difference]: With dead ends: 116 [2020-10-27 04:15:30,036 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 04:15:30,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:15:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 04:15:30,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-27 04:15:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 04:15:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-27 04:15:30,046 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-27 04:15:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:30,046 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-27 04:15:30,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:15:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-27 04:15:30,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 04:15:30,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:30,048 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:30,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:15:30,048 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:30,049 INFO L82 PathProgramCache]: Analyzing trace with hash -861489089, now seen corresponding path program 9 times [2020-10-27 04:15:30,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:30,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315289457] [2020-10-27 04:15:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:30,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:38,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:38,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 04:15:38,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7897 [2020-10-27 04:15:38,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:38,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-27 04:15:38,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:15:38,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 04:15:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,891 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2020-10-27 04:15:40,122 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2020-10-27 04:15:40,379 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-27 04:15:40,593 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-10-27 04:15:40,783 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-27 04:15:40,968 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-27 04:15:41,187 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-27 04:15:41,396 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-27 04:15:41,651 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-27 04:15:41,910 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-27 04:15:42,154 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-27 04:15:42,449 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-27 04:15:44,884 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-27 04:15:49,434 WARN L193 SmtUtils]: Spent 4.41 s on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-27 04:15:49,801 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-27 04:15:50,130 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2020-10-27 04:15:50,481 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-27 04:15:50,798 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-27 04:15:51,138 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-27 04:15:52,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:52,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:52,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:52,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:52,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:52,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:52,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:52,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:52,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:53,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:53,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:56,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:15:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4766 [2020-10-27 04:15:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:15:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:04,488 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-10-27 04:16:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:16:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:07,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:09,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:09,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:09,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:16:09,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:16:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:16:09,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:16:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:16:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 04:16:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:18,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:16:18,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:16:18,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2481 [2020-10-27 04:16:18,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:16:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:16:18,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 59 proven. 960 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-27 04:16:24,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315289457] [2020-10-27 04:16:24,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:24,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-10-27 04:16:24,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539278702] [2020-10-27 04:16:24,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-27 04:16:24,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:24,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-27 04:16:24,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=4774, Unknown=0, NotChecked=0, Total=4970 [2020-10-27 04:16:24,785 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 71 states. [2020-10-27 04:16:31,643 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:16:32,436 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 04:16:33,607 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-27 04:16:34,252 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-27 04:16:43,097 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-27 04:16:44,036 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-10-27 04:16:51,579 WARN L193 SmtUtils]: Spent 4.46 s on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-27 04:16:59,159 WARN L193 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-10-27 04:17:02,758 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-10-27 04:17:08,300 WARN L193 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-10-27 04:17:11,955 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-27 04:17:30,085 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-27 04:17:39,956 WARN L193 SmtUtils]: Spent 6.58 s on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-27 04:17:45,672 WARN L193 SmtUtils]: Spent 4.56 s on a formula simplification. DAG size of input: 92 DAG size of output: 82