/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=NARROWEST --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 -i ../../../trunk/examples/svcomp/array-crafted/bor4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:30:03,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:30:03,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:30:03,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:30:03,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:30:03,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:30:03,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:30:03,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:30:03,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:30:03,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:30:03,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:30:03,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:30:03,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:30:03,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:30:03,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:30:03,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:30:03,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:30:03,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:30:03,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:30:03,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:30:03,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:30:03,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:30:03,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:30:03,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:30:03,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:30:03,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:30:03,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:30:03,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:30:03,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:30:03,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:30:03,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:30:03,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:30:03,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:30:03,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:30:03,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:30:03,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:30:03,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:30:03,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:30:03,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:30:03,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:30:03,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:30:03,330 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 [2020-10-13 04:30:03,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:30:03,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:30:03,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:30:03,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:30:03,355 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:30:03,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:30:03,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:30:03,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:30:03,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:30:03,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:30:03,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:30:03,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:30:03,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:30:03,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:30:03,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:30:03,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:30:03,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:30:03,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:30:03,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:30:03,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:30:03,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:30:03,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:30:03,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:30:03,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:30:03,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:30:03,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:30:03,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:30:03,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:30:03,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:30:03,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 04:30:03,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:30:03,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:30:03,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:30:03,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:30:03,728 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:30:03,729 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor4.i [2020-10-13 04:30:03,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302886f57/6bddddd4c41c4c18b0a09c9aa2d1f033/FLAG4e1dabecb [2020-10-13 04:30:04,254 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:30:04,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor4.i [2020-10-13 04:30:04,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302886f57/6bddddd4c41c4c18b0a09c9aa2d1f033/FLAG4e1dabecb [2020-10-13 04:30:04,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302886f57/6bddddd4c41c4c18b0a09c9aa2d1f033 [2020-10-13 04:30:04,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:30:04,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:30:04,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:04,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:30:04,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:30:04,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:04,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a018b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04, skipping insertion in model container [2020-10-13 04:30:04,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:04,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:30:04,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:30:04,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:04,910 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:30:04,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:04,949 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:30:04,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04 WrapperNode [2020-10-13 04:30:04,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:04,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:30:04,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:30:04,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:30:05,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:05,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:05,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:05,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:05,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:05,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:05,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:05,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:30:05,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:30:05,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:30:05,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:30:05,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04" (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 [2020-10-13 04:30:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:30:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:30:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-13 04:30:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:30:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:30:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:30:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-13 04:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:30:05,380 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:30:05,380 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:30:05,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:05 BoogieIcfgContainer [2020-10-13 04:30:05,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:30:05,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:30:05,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:30:05,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:30:05,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:04" (1/3) ... [2020-10-13 04:30:05,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c762dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:05, skipping insertion in model container [2020-10-13 04:30:05,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04" (2/3) ... [2020-10-13 04:30:05,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c762dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:05, skipping insertion in model container [2020-10-13 04:30:05,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:05" (3/3) ... [2020-10-13 04:30:05,397 INFO L109 eAbstractionObserver]: Analyzing ICFG bor4.i [2020-10-13 04:30:05,408 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:30:05,416 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:30:05,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:30:05,461 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:30:05,461 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:30:05,462 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:30:05,462 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:30:05,462 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:30:05,462 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:30:05,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:30:05,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:30:05,484 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 04:30:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:05,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:05,493 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] [2020-10-13 04:30:05,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:05,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:05,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 04:30:05,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:05,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869022850] [2020-10-13 04:30:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:05,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:06,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:06,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-10-13 04:30:06,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:30:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 04:30:06,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:06,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:06,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:30:06,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:06,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:06,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:06,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:06,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:06,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:06,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:30:06,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:06,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869022850] [2020-10-13 04:30:06,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:06,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:30:06,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416833991] [2020-10-13 04:30:06,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:30:06,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:06,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:30:06,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:06,651 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 04:30:06,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:06,750 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 04:30:06,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:30:06,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 04:30:06,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:06,762 INFO L225 Difference]: With dead ends: 54 [2020-10-13 04:30:06,762 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 04:30:06,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 04:30:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 04:30:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 04:30:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 04:30:06,813 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 04:30:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:06,813 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 04:30:06,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:30:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 04:30:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:06,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:06,817 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] [2020-10-13 04:30:06,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:30:06,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:06,818 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 04:30:06,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:06,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674527398] [2020-10-13 04:30:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:07,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-13 04:30:07,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 04:30:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:07,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:07,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:30:07,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:07,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:07,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:07,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:30:07,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:07,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:07,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:07,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:07,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:07,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:07,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 04:30:07,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674527398] [2020-10-13 04:30:07,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:07,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 04:30:07,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579684151] [2020-10-13 04:30:07,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:07,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:07,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:07,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:07,748 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 04:30:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:07,854 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 04:30:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:07,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 04:30:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:07,857 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:30:07,857 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 04:30:07,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:07,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 04:30:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 04:30:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 04:30:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 04:30:07,878 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 04:30:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:07,880 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 04:30:07,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:07,880 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 04:30:07,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 04:30:07,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:07,882 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] [2020-10-13 04:30:07,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:30:07,883 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:07,883 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-13 04:30:07,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:07,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902359002] [2020-10-13 04:30:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 04:30:10,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2499 [2020-10-13 04:30:10,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:30:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:10,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:10,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:10,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:30:10,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:30:10,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:10,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:10,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:30:10,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:10,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:10,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:30:10,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:10,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:30:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:10,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:10,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:30:10,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 04:30:10,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902359002] [2020-10-13 04:30:10,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:10,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:10,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063775812] [2020-10-13 04:30:10,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:10,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:10,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:10,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:10,570 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 04:30:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:10,701 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 04:30:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:10,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 04:30:10,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:10,704 INFO L225 Difference]: With dead ends: 42 [2020-10-13 04:30:10,704 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 04:30:10,705 INFO L675 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 [2020-10-13 04:30:10,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 04:30:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 04:30:10,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:30:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 04:30:10,723 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 04:30:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:10,727 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 04:30:10,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 04:30:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 04:30:10,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:10,732 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] [2020-10-13 04:30:10,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:30:10,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:10,734 INFO L82 PathProgramCache]: Analyzing trace with hash -107343225, now seen corresponding path program 1 times [2020-10-13 04:30:10,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:10,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346299264] [2020-10-13 04:30:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 04:30:14,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:14,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3399 [2020-10-13 04:30:14,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:14,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:14,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:14,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:30:14,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 04:30:14,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:14,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:14,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:30:14,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:14,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:30:14,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:14,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:30:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:14,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:14,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:30:14,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 04:30:14,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346299264] [2020-10-13 04:30:14,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:14,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:14,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693801803] [2020-10-13 04:30:14,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:14,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:14,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:14,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:14,313 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 04:30:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:14,435 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 04:30:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:14,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 04:30:14,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:14,437 INFO L225 Difference]: With dead ends: 50 [2020-10-13 04:30:14,438 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 04:30:14,439 INFO L675 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 [2020-10-13 04:30:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 04:30:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 04:30:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 04:30:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 04:30:14,454 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 04:30:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:14,456 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 04:30:14,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 04:30:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 04:30:14,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:14,459 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] [2020-10-13 04:30:14,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:30:14,460 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:14,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:14,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 04:30:14,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:14,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772257791] [2020-10-13 04:30:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 04:30:19,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:19,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4718 [2020-10-13 04:30:19,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 04:30:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:19,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:19,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:19,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:19,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:19,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:19,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:19,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:30:19,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:19,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:19,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:19,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:30:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:19,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:19,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:30:19,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:19,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:19,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:19,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:30:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:19,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:19,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:19,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:19,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:19,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:19,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:19,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772257791] [2020-10-13 04:30:19,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:19,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:19,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72787469] [2020-10-13 04:30:19,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:19,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:19,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:19,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:19,327 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 04:30:19,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:19,466 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 04:30:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:19,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 04:30:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:19,469 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:30:19,469 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:30:19,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:30:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 04:30:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:30:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 04:30:19,490 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 04:30:19,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:19,491 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 04:30:19,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 04:30:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 04:30:19,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:19,494 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-13 04:30:19,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:30:19,494 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:19,495 INFO L82 PathProgramCache]: Analyzing trace with hash 428974311, now seen corresponding path program 2 times [2020-10-13 04:30:19,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:19,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821654742] [2020-10-13 04:30:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:20,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 04:30:24,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:30:24,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 04:30:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:24,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:30:24,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:24,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:30:24,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:30:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:24,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:24,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:30:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:24,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:30:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 04:30:24,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821654742] [2020-10-13 04:30:24,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:24,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:24,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239551372] [2020-10-13 04:30:24,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:24,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:24,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:24,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:24,667 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 04:30:24,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:24,808 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-13 04:30:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:24,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 04:30:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:24,811 INFO L225 Difference]: With dead ends: 49 [2020-10-13 04:30:24,811 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 04:30:24,812 INFO L675 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 [2020-10-13 04:30:24,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 04:30:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 04:30:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 04:30:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 04:30:24,829 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 04:30:24,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:24,830 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 04:30:24,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 04:30:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 04:30:24,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:24,835 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] [2020-10-13 04:30:24,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:30:24,837 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:24,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1284566683, now seen corresponding path program 3 times [2020-10-13 04:30:24,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:24,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985410967] [2020-10-13 04:30:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:25,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 04:30:29,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:29,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:30:29,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:29,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:29,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:29,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:29,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:30:29,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:30:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:29,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:29,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:30:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:29,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:29,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:30:30,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985410967] [2020-10-13 04:30:30,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:30,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:30,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437033795] [2020-10-13 04:30:30,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:30,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:30,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:30,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:30,005 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 04:30:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:30,106 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-13 04:30:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:30,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 04:30:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:30,107 INFO L225 Difference]: With dead ends: 60 [2020-10-13 04:30:30,107 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:30:30,110 INFO L675 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 [2020-10-13 04:30:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:30:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 04:30:30,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 04:30:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 04:30:30,118 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-13 04:30:30,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:30,119 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 04:30:30,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:30,120 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 04:30:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 04:30:30,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:30,121 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:30,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:30:30,122 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:30,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:30,123 INFO L82 PathProgramCache]: Analyzing trace with hash -629434041, now seen corresponding path program 4 times [2020-10-13 04:30:30,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:30,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303853028] [2020-10-13 04:30:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:30,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:35,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 04:30:35,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:35,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:30:35,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:35,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:35,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:35,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:35,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:35,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:35,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:35,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:30:35,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:30:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:35,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:35,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:35,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:35,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:35,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:30:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:35,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:35,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:35,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:30:35,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303853028] [2020-10-13 04:30:35,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:35,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:35,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294647074] [2020-10-13 04:30:35,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:35,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:35,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:35,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:35,239 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 04:30:35,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:35,330 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-13 04:30:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:35,331 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 04:30:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:35,332 INFO L225 Difference]: With dead ends: 62 [2020-10-13 04:30:35,332 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 04:30:35,333 INFO L675 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 [2020-10-13 04:30:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 04:30:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 04:30:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 04:30:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 04:30:35,338 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 04:30:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:35,339 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 04:30:35,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 04:30:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 04:30:35,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:35,340 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 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] [2020-10-13 04:30:35,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:30:35,341 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1887809705, now seen corresponding path program 5 times [2020-10-13 04:30:35,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:35,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027123770] [2020-10-13 04:30:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 04:30:40,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:30:40,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 04:30:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:40,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:40,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:30:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:40,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:40,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:30:40,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:30:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:40,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:40,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:30:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:40,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:30:40,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:30:40,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027123770] [2020-10-13 04:30:40,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:40,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:40,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090216398] [2020-10-13 04:30:40,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:40,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:40,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:40,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:40,456 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 04:30:40,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:40,590 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-13 04:30:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:40,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 04:30:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:40,591 INFO L225 Difference]: With dead ends: 63 [2020-10-13 04:30:40,591 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 04:30:40,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:30:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 04:30:40,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 04:30:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 04:30:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 04:30:40,602 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-13 04:30:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:40,602 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 04:30:40,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 04:30:40,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 04:30:40,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:40,606 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 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] [2020-10-13 04:30:40,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:30:40,606 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1137374119, now seen corresponding path program 6 times [2020-10-13 04:30:40,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:40,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28277751] [2020-10-13 04:30:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:43,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 04:30:45,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:30:45,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:45,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 04:30:45,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:45,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:45,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:45,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:45,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:45,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:30:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:45,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:30:45,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:30:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:45,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:30:45,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:45,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:30:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:45,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:30:45,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:30:45,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28277751] [2020-10-13 04:30:45,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:45,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:45,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457965154] [2020-10-13 04:30:45,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:45,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:45,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:45,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:45,780 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 04:30:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:45,884 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-13 04:30:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:45,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-13 04:30:45,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:45,886 INFO L225 Difference]: With dead ends: 59 [2020-10-13 04:30:45,886 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 04:30:45,887 INFO L675 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 [2020-10-13 04:30:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 04:30:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 04:30:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 04:30:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 04:30:45,901 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 04:30:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:45,902 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 04:30:45,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 04:30:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 04:30:45,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:45,908 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 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] [2020-10-13 04:30:45,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:30:45,909 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:45,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:45,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2089835483, now seen corresponding path program 7 times [2020-10-13 04:30:45,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:45,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865519079] [2020-10-13 04:30:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 04:30:50,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:30:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:30:50,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:50,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:50,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:50,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:30:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:51,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:51,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:51,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:51,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:51,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:30:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:51,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:51,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:51,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:51,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:51,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:51,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:51,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:30:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:51,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:51,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:51,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:51,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:51,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:30:51,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865519079] [2020-10-13 04:30:51,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:51,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:30:51,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090812255] [2020-10-13 04:30:51,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:30:51,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:51,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:30:51,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:51,051 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 04:30:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:51,149 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-13 04:30:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:30:51,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 04:30:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:51,150 INFO L225 Difference]: With dead ends: 72 [2020-10-13 04:30:51,150 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 04:30:51,151 INFO L675 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 [2020-10-13 04:30:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 04:30:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 04:30:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 04:30:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 04:30:51,156 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 04:30:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:51,156 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 04:30:51,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:30:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 04:30:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 04:30:51,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:51,157 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 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] [2020-10-13 04:30:51,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:30:51,158 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:51,158 INFO L82 PathProgramCache]: Analyzing trace with hash 546662663, now seen corresponding path program 8 times [2020-10-13 04:30:51,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:51,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072775665] [2020-10-13 04:30:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:51,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:56,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 04:30:56,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:56,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:30:56,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 04:30:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:56,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:56,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:56,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:56,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:56,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:56,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:30:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:56,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:56,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:56,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:56,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:56,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:56,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:56,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:56,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:56,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:30:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:56,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:56,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:56,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:30:56,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:56,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:56,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:30:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:56,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:56,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:56,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:56,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 04:30:56,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072775665] [2020-10-13 04:30:56,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:56,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:30:56,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278328476] [2020-10-13 04:30:56,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:30:56,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:56,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:30:56,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:56,289 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 04:30:56,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:56,422 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-13 04:30:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:30:56,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 04:30:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:56,423 INFO L225 Difference]: With dead ends: 73 [2020-10-13 04:30:56,424 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 04:30:56,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:30:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 04:30:56,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 04:30:56,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 04:30:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 04:30:56,438 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 64 [2020-10-13 04:30:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:56,438 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 04:30:56,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:30:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 04:30:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 04:30:56,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:56,439 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 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] [2020-10-13 04:30:56,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:30:56,439 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:56,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:56,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1862159493, now seen corresponding path program 9 times [2020-10-13 04:30:56,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:56,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691311165] [2020-10-13 04:30:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 04:31:01,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:01,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:31:01,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 04:31:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:01,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:01,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:01,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:01,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:31:01,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:31:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:01,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:01,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:31:01,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:01,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:31:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:01,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:31:01,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 04:31:01,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691311165] [2020-10-13 04:31:01,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:01,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:31:01,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313950719] [2020-10-13 04:31:01,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:31:01,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:01,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:31:01,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:01,552 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 04:31:01,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:01,657 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-13 04:31:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:31:01,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 04:31:01,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:01,658 INFO L225 Difference]: With dead ends: 67 [2020-10-13 04:31:01,659 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 04:31:01,659 INFO L675 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 [2020-10-13 04:31:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 04:31:01,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 04:31:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:31:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 04:31:01,664 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 04:31:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:01,665 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 04:31:01,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:31:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 04:31:01,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 04:31:01,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:01,666 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 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] [2020-10-13 04:31:01,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:31:01,666 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:01,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1920651901, now seen corresponding path program 10 times [2020-10-13 04:31:01,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:01,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818894451] [2020-10-13 04:31:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 04:31:06,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:31:06,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 04:31:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:06,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:06,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:06,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:31:06,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:31:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:06,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:31:06,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:31:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:06,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:31:06,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 04:31:06,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818894451] [2020-10-13 04:31:06,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:06,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:06,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440175492] [2020-10-13 04:31:06,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:06,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:06,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:06,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:06,789 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 04:31:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:06,936 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 04:31:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:06,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 04:31:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:06,937 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:31:06,937 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 04:31:06,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:31:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 04:31:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 04:31:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 04:31:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 04:31:06,952 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 04:31:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:06,953 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 04:31:06,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 04:31:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 04:31:06,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:06,954 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 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] [2020-10-13 04:31:06,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:31:06,954 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1621058305, now seen corresponding path program 11 times [2020-10-13 04:31:06,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:06,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32742002] [2020-10-13 04:31:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 04:31:11,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:31:11,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:11,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:12,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:12,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:12,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:12,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:12,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:12,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:12,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:31:12,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:12,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:31:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:12,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:31:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:12,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:12,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:12,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:12,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:31:12,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:12,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 04:31:12,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32742002] [2020-10-13 04:31:12,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:12,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:12,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309356096] [2020-10-13 04:31:12,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:12,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:12,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:12,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:12,067 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 04:31:12,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:12,140 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-13 04:31:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:12,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 04:31:12,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:12,141 INFO L225 Difference]: With dead ends: 86 [2020-10-13 04:31:12,141 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 04:31:12,142 INFO L675 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 [2020-10-13 04:31:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 04:31:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 04:31:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 04:31:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 04:31:12,147 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-13 04:31:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:12,148 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 04:31:12,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 04:31:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 04:31:12,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:12,149 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 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] [2020-10-13 04:31:12,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:31:12,149 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:12,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1471357923, now seen corresponding path program 12 times [2020-10-13 04:31:12,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:12,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354166047] [2020-10-13 04:31:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 04:31:17,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:17,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:17,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:17,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 04:31:17,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:17,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:17,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:17,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:17,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:17,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:17,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:17,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:17,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:17,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:31:17,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:31:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:17,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:17,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:31:17,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354166047] [2020-10-13 04:31:17,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:17,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:17,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617013533] [2020-10-13 04:31:17,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:17,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:17,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:17,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:17,290 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 04:31:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:17,399 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-13 04:31:17,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:17,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-13 04:31:17,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:17,401 INFO L225 Difference]: With dead ends: 75 [2020-10-13 04:31:17,404 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:31:17,405 INFO L675 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 [2020-10-13 04:31:17,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:31:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 04:31:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 04:31:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 04:31:17,417 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 04:31:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:17,418 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 04:31:17,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 04:31:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 04:31:17,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:17,420 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 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] [2020-10-13 04:31:17,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:31:17,420 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:17,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:17,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1187343007, now seen corresponding path program 13 times [2020-10-13 04:31:17,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:17,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532575964] [2020-10-13 04:31:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 04:31:22,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:22,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 04:31:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:22,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:31:22,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:31:22,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:22,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:22,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:31:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:22,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:31:22,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:31:22,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532575964] [2020-10-13 04:31:22,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:22,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:22,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968014227] [2020-10-13 04:31:22,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:22,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:22,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:22,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:22,609 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 04:31:22,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:22,738 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-13 04:31:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:22,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 04:31:22,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:22,740 INFO L225 Difference]: With dead ends: 77 [2020-10-13 04:31:22,741 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 04:31:22,741 INFO L675 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 [2020-10-13 04:31:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 04:31:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 04:31:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 04:31:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 04:31:22,757 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 04:31:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:22,757 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 04:31:22,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 04:31:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 04:31:22,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:22,763 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 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] [2020-10-13 04:31:22,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:31:22,764 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:22,764 INFO L82 PathProgramCache]: Analyzing trace with hash -693395617, now seen corresponding path program 14 times [2020-10-13 04:31:22,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:22,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756723536] [2020-10-13 04:31:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 04:31:27,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:27,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 04:31:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:27,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:27,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:27,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:27,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:31:27,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:31:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:27,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:31:27,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-13 04:31:27,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756723536] [2020-10-13 04:31:27,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:27,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:27,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294025368] [2020-10-13 04:31:27,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:27,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:27,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:27,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:27,938 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 04:31:28,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:28,124 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-10-13 04:31:28,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:28,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 04:31:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:28,125 INFO L225 Difference]: With dead ends: 95 [2020-10-13 04:31:28,126 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 04:31:28,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:31:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 04:31:28,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 04:31:28,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 04:31:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 04:31:28,146 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 84 [2020-10-13 04:31:28,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:28,146 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 04:31:28,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:28,147 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 04:31:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 04:31:28,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:28,148 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 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] [2020-10-13 04:31:28,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:31:28,148 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash -413745699, now seen corresponding path program 15 times [2020-10-13 04:31:28,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:28,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983931875] [2020-10-13 04:31:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 04:31:33,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:31:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:33,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:33,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:33,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:31:33,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:31:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:33,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:31:33,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:31:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:33,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:31:33,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:31:33,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983931875] [2020-10-13 04:31:33,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:33,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:33,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547763841] [2020-10-13 04:31:33,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:33,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:33,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:33,283 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 04:31:33,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:33,382 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-13 04:31:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:33,382 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 04:31:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:33,383 INFO L225 Difference]: With dead ends: 100 [2020-10-13 04:31:33,383 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 04:31:33,384 INFO L675 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 [2020-10-13 04:31:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 04:31:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 04:31:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:31:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 04:31:33,390 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 04:31:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:33,390 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 04:31:33,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 04:31:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 04:31:33,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:33,391 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 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] [2020-10-13 04:31:33,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:31:33,391 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:33,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:33,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1367983169, now seen corresponding path program 16 times [2020-10-13 04:31:33,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:33,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053063179] [2020-10-13 04:31:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 04:31:38,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:38,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:31:38,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 04:31:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:38,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:38,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:38,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:38,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:31:38,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:31:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:38,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:31:38,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:31:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:38,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:38,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:31:38,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053063179] [2020-10-13 04:31:38,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:38,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:38,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062554776] [2020-10-13 04:31:38,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:38,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:38,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:38,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:38,542 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 04:31:38,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:38,658 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 04:31:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:38,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 04:31:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:38,659 INFO L225 Difference]: With dead ends: 85 [2020-10-13 04:31:38,660 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 04:31:38,660 INFO L675 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 [2020-10-13 04:31:38,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 04:31:38,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 04:31:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:31:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 04:31:38,665 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 04:31:38,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:38,665 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 04:31:38,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 04:31:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 04:31:38,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:38,666 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 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] [2020-10-13 04:31:38,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:31:38,667 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:38,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:38,667 INFO L82 PathProgramCache]: Analyzing trace with hash 905188925, now seen corresponding path program 17 times [2020-10-13 04:31:38,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:38,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292828301] [2020-10-13 04:31:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 04:31:43,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:43,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:43,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:43,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:43,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:43,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:31:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:43,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:31:43,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:43,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:31:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:43,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:43,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:31:43,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:43,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-13 04:31:43,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292828301] [2020-10-13 04:31:43,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:43,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:43,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918661176] [2020-10-13 04:31:43,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:43,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:43,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:43,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:43,837 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 04:31:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:43,939 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-10-13 04:31:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:43,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 04:31:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:43,940 INFO L225 Difference]: With dead ends: 106 [2020-10-13 04:31:43,941 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 04:31:43,941 INFO L675 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 [2020-10-13 04:31:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 04:31:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 04:31:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 04:31:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 04:31:43,946 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 94 [2020-10-13 04:31:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:43,947 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 04:31:43,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 04:31:43,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 04:31:43,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:43,948 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 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] [2020-10-13 04:31:43,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:31:43,948 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:43,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:43,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1132319519, now seen corresponding path program 18 times [2020-10-13 04:31:43,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:43,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030415610] [2020-10-13 04:31:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:48,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 04:31:48,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:31:48,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 04:31:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:48,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:48,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:48,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:48,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:31:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:31:49,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:31:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:49,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:49,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:31:49,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:31:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:49,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:31:49,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-13 04:31:49,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030415610] [2020-10-13 04:31:49,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:49,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:49,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263827209] [2020-10-13 04:31:49,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:49,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:49,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:49,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:49,101 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 04:31:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:49,271 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 04:31:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:49,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-10-13 04:31:49,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:49,275 INFO L225 Difference]: With dead ends: 107 [2020-10-13 04:31:49,275 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 04:31:49,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:31:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 04:31:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 04:31:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 04:31:49,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 04:31:49,280 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 96 [2020-10-13 04:31:49,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:49,281 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 04:31:49,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 04:31:49,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 04:31:49,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:49,282 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-13 04:31:49,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:31:49,282 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:49,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:49,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1836679011, now seen corresponding path program 19 times [2020-10-13 04:31:49,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:49,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583276357] [2020-10-13 04:31:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 04:31:54,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:54,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 04:31:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:54,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:54,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:31:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:54,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:31:54,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:31:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:54,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:31:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:54,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:54,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 04:31:54,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583276357] [2020-10-13 04:31:54,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:54,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:31:54,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003687202] [2020-10-13 04:31:54,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:31:54,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:54,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:31:54,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:54,450 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 04:31:54,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:54,678 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-13 04:31:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:31:54,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 04:31:54,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:54,679 INFO L225 Difference]: With dead ends: 111 [2020-10-13 04:31:54,679 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 04:31:54,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:31:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 04:31:54,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 04:31:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 04:31:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 04:31:54,686 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 04:31:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:54,687 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 04:31:54,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:31:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 04:31:54,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 04:31:54,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:54,688 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 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] [2020-10-13 04:31:54,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:31:54,688 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:54,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:54,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1001531493, now seen corresponding path program 20 times [2020-10-13 04:31:54,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:54,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815015255] [2020-10-13 04:31:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 04:31:59,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:59,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:59,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 04:31:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:59,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:31:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:31:59,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:59,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:31:59,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:59,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:31:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:31:59,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:59,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:31:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:31:59,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:31:59,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:31:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2020-10-13 04:31:59,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815015255] [2020-10-13 04:31:59,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:59,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:31:59,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896457443] [2020-10-13 04:31:59,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:31:59,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:59,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:31:59,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:59,861 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 04:31:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:59,973 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-13 04:31:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:31:59,974 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-13 04:31:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:59,975 INFO L225 Difference]: With dead ends: 97 [2020-10-13 04:31:59,975 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 04:31:59,976 INFO L675 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 [2020-10-13 04:31:59,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 04:31:59,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 04:31:59,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 04:31:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 04:31:59,981 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 04:31:59,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:59,982 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 04:31:59,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:31:59,982 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 04:31:59,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 04:31:59,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:59,983 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-13 04:31:59,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:31:59,984 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:59,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:59,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1301941017, now seen corresponding path program 21 times [2020-10-13 04:31:59,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:59,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270062885] [2020-10-13 04:31:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:59,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:04,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:04,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 04:32:04,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:32:04,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:04,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:05,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:05,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:32:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:05,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:32:05,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:32:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:32:05,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:32:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:05,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:32:05,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:32:05,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270062885] [2020-10-13 04:32:05,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:05,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:32:05,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964247797] [2020-10-13 04:32:05,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:32:05,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:05,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:32:05,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:05,153 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 04:32:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:05,232 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-10-13 04:32:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:32:05,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 04:32:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:05,234 INFO L225 Difference]: With dead ends: 120 [2020-10-13 04:32:05,234 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 04:32:05,235 INFO L675 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 [2020-10-13 04:32:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 04:32:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 04:32:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 04:32:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 04:32:05,239 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 04:32:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:05,239 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 04:32:05,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:32:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 04:32:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 04:32:05,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:05,241 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-13 04:32:05,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:32:05,241 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash 505529339, now seen corresponding path program 22 times [2020-10-13 04:32:05,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:05,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831071095] [2020-10-13 04:32:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 04:32:10,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 04:32:10,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 04:32:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:10,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:10,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:10,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:32:10,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:32:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:10,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:32:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:32:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:10,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:32:10,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2020-10-13 04:32:10,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831071095] [2020-10-13 04:32:10,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:10,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:10,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746334532] [2020-10-13 04:32:10,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:10,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:10,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:10,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:10,447 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 04:32:10,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:10,679 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-13 04:32:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:10,679 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 04:32:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:10,680 INFO L225 Difference]: With dead ends: 121 [2020-10-13 04:32:10,681 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 04:32:10,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:32:10,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 04:32:10,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 04:32:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 04:32:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 04:32:10,687 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 04:32:10,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:10,688 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 04:32:10,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 04:32:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 04:32:10,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:10,689 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 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] [2020-10-13 04:32:10,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:32:10,689 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:10,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:10,689 INFO L82 PathProgramCache]: Analyzing trace with hash -489473159, now seen corresponding path program 23 times [2020-10-13 04:32:10,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:10,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324260686] [2020-10-13 04:32:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 04:32:15,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:32:15,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:15,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:15,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:15,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:15,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:32:15,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:15,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:15,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:15,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:32:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:15,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:32:15,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:32:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2020-10-13 04:32:15,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324260686] [2020-10-13 04:32:15,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:15,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:15,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064157921] [2020-10-13 04:32:15,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:15,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:15,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:15,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:15,889 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 04:32:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:16,015 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2020-10-13 04:32:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:16,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 118 [2020-10-13 04:32:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:16,017 INFO L225 Difference]: With dead ends: 126 [2020-10-13 04:32:16,017 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 04:32:16,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 04:32:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 04:32:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 04:32:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 04:32:16,023 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-13 04:32:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:16,023 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 04:32:16,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 04:32:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 04:32:16,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:16,025 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 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] [2020-10-13 04:32:16,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:32:16,025 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:16,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1351414363, now seen corresponding path program 24 times [2020-10-13 04:32:16,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:16,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731546267] [2020-10-13 04:32:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 04:32:21,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:21,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:32:21,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 04:32:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:21,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:21,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:21,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:21,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:21,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:21,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:32:21,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:21,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:32:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:21,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:32:21,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:32:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:21,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:21,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:32:21,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 04:32:21,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731546267] [2020-10-13 04:32:21,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:21,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:21,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818835650] [2020-10-13 04:32:21,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:21,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:21,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:21,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:21,228 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 04:32:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:21,338 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-13 04:32:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:21,338 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 04:32:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:21,339 INFO L225 Difference]: With dead ends: 107 [2020-10-13 04:32:21,339 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 04:32:21,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 04:32:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 04:32:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 04:32:21,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 04:32:21,346 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2020-10-13 04:32:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:21,347 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 04:32:21,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 04:32:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 04:32:21,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:21,352 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 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] [2020-10-13 04:32:21,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:32:21,352 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:21,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:21,354 INFO L82 PathProgramCache]: Analyzing trace with hash 862348761, now seen corresponding path program 25 times [2020-10-13 04:32:21,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:21,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017934343] [2020-10-13 04:32:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 04:32:26,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 04:32:26,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 04:32:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:26,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:32:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:32:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:26,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:32:26,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:32:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:26,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:26,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:32:26,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:26,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2020-10-13 04:32:26,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017934343] [2020-10-13 04:32:26,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:26,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:26,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969506195] [2020-10-13 04:32:26,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:26,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:26,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:26,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:26,576 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 04:32:26,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:26,811 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-13 04:32:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:26,811 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 04:32:26,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:26,812 INFO L225 Difference]: With dead ends: 131 [2020-10-13 04:32:26,813 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 04:32:26,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:32:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 04:32:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 04:32:26,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 04:32:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 04:32:26,819 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 04:32:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:26,819 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 04:32:26,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 04:32:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 04:32:26,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:26,820 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 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] [2020-10-13 04:32:26,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:32:26,821 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:26,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1738744361, now seen corresponding path program 26 times [2020-10-13 04:32:26,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:26,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710523790] [2020-10-13 04:32:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:31,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 04:32:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:32:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 04:32:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:31,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:31,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:31,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:31,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:31,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:31,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 04:32:31,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:31,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:32:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:31,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:32,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:32,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:32,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:32:32,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:32,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:32:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:32,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:32,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:32:32,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-13 04:32:32,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710523790] [2020-10-13 04:32:32,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:32,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:32,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712440989] [2020-10-13 04:32:32,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:32,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:32,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:32,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:32,070 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 04:32:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:32,184 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-13 04:32:32,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:32,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-13 04:32:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:32,186 INFO L225 Difference]: With dead ends: 113 [2020-10-13 04:32:32,186 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 04:32:32,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 04:32:32,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 04:32:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 04:32:32,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 04:32:32,193 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-13 04:32:32,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:32,193 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 04:32:32,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:32,194 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 04:32:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 04:32:32,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:32,195 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] [2020-10-13 04:32:32,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:32:32,195 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1655287211, now seen corresponding path program 27 times [2020-10-13 04:32:32,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:32,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132506966] [2020-10-13 04:32:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 04:32:37,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:37,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 04:32:37,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:37,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:37,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:37,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:37,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:32:37,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:32:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:37,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:37,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:32:37,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:32:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:37,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:37,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:32:37,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:32:37,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132506966] [2020-10-13 04:32:37,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:37,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:37,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453667312] [2020-10-13 04:32:37,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:37,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:37,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:37,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:37,419 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 04:32:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:37,530 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2020-10-13 04:32:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:37,531 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 04:32:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:37,532 INFO L225 Difference]: With dead ends: 140 [2020-10-13 04:32:37,532 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:32:37,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:32:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 04:32:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 04:32:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 04:32:37,538 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 04:32:37,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:37,538 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 04:32:37,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 04:32:37,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 04:32:37,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:37,540 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-13 04:32:37,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:32:37,540 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:37,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:37,540 INFO L82 PathProgramCache]: Analyzing trace with hash -203766217, now seen corresponding path program 28 times [2020-10-13 04:32:37,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:37,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857756293] [2020-10-13 04:32:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 04:32:42,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:42,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:32:42,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:42,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 04:32:42,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:42,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:42,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:42,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:42,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:42,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:32:42,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:32:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:42,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 04:32:42,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:32:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:42,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:42,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:32:42,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:32:42,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857756293] [2020-10-13 04:32:42,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:42,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:42,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950511103] [2020-10-13 04:32:42,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:42,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:42,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:42,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:42,808 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 04:32:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:42,935 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-13 04:32:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:42,935 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 04:32:42,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:42,936 INFO L225 Difference]: With dead ends: 117 [2020-10-13 04:32:42,937 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 04:32:42,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 04:32:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 04:32:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:32:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 04:32:42,943 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 04:32:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:42,944 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 04:32:42,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 04:32:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 04:32:42,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:42,945 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 11, 11, 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] [2020-10-13 04:32:42,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:32:42,945 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:42,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 284926645, now seen corresponding path program 29 times [2020-10-13 04:32:42,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:42,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247355785] [2020-10-13 04:32:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:42,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:47,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:47,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 04:32:47,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:32:47,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 04:32:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:47,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:47,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:47,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:47,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:47,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:47,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:48,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:32:48,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:32:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:48,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:48,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:32:48,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 04:32:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:48,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:48,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:48,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:48,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 04:32:48,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-13 04:32:48,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247355785] [2020-10-13 04:32:48,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:48,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:48,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898132873] [2020-10-13 04:32:48,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:48,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:48,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:48,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:48,189 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 04:32:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:48,449 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2020-10-13 04:32:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:48,449 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 134 [2020-10-13 04:32:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:48,451 INFO L225 Difference]: With dead ends: 145 [2020-10-13 04:32:48,451 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 04:32:48,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:32:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 04:32:48,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 04:32:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 04:32:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 04:32:48,458 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 134 [2020-10-13 04:32:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:48,459 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 04:32:48,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 04:32:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 04:32:48,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:48,460 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 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] [2020-10-13 04:32:48,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:32:48,460 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:48,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash 649511859, now seen corresponding path program 30 times [2020-10-13 04:32:48,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:48,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148555114] [2020-10-13 04:32:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 04:32:53,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:32:53,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:53,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:53,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:53,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:53,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:53,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:32:53,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:53,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:53,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:53,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:32:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:53,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:32:53,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:32:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:53,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:53,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:32:53,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:32:53,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148555114] [2020-10-13 04:32:53,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:53,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:53,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384794973] [2020-10-13 04:32:53,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:53,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:53,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:53,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:53,709 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 04:32:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:53,847 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-13 04:32:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:53,848 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-13 04:32:53,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:53,849 INFO L225 Difference]: With dead ends: 150 [2020-10-13 04:32:53,849 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 04:32:53,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 04:32:53,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 04:32:53,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 04:32:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 04:32:53,856 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 04:32:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:53,857 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 04:32:53,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 04:32:53,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 04:32:53,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:53,858 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:53,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:32:53,858 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:53,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1450001685, now seen corresponding path program 31 times [2020-10-13 04:32:53,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:53,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147037679] [2020-10-13 04:32:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:53,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:58,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:58,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 04:32:58,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:58,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:32:58,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:58,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:32:58,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 04:32:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:32:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:58,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:58,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:58,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:58,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:58,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:32:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:58,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:58,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:58,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:58,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:32:58,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:58,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:32:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:58,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:58,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:58,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:32:58,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:32:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:32:58,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 04:32:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:59,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:59,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:32:59,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2020-10-13 04:32:59,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147037679] [2020-10-13 04:32:59,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:59,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:32:59,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102876817] [2020-10-13 04:32:59,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:32:59,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:59,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:32:59,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:32:59,124 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 04:32:59,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:59,403 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2020-10-13 04:32:59,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:32:59,404 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 04:32:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:59,405 INFO L225 Difference]: With dead ends: 151 [2020-10-13 04:32:59,405 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:32:59,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:32:59,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:32:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 04:32:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 04:32:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 04:32:59,412 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 04:32:59,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:59,412 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 04:32:59,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:32:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 04:32:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 04:32:59,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:59,414 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:59,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:32:59,414 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:59,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1537105427, now seen corresponding path program 32 times [2020-10-13 04:32:59,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:59,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085347074] [2020-10-13 04:32:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 04:33:04,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:33:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:04,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:04,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:04,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:04,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:33:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:04,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:33:04,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:04,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 04:33:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:04,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:04,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:04,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2020-10-13 04:33:04,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085347074] [2020-10-13 04:33:04,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:04,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:04,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175722119] [2020-10-13 04:33:04,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:04,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:04,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:04,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:04,687 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 04:33:04,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:04,826 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-10-13 04:33:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:04,827 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-13 04:33:04,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:04,828 INFO L225 Difference]: With dead ends: 156 [2020-10-13 04:33:04,828 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 04:33:04,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 04:33:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 04:33:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 04:33:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 04:33:04,835 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 148 [2020-10-13 04:33:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:04,835 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 04:33:04,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 04:33:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 04:33:04,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:04,837 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:04,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:33:04,837 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:04,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1284088459, now seen corresponding path program 33 times [2020-10-13 04:33:04,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:04,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117487499] [2020-10-13 04:33:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:09,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:09,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 04:33:09,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:09,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 04:33:09,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 04:33:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:09,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:09,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:09,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:09,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:09,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:09,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:09,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:09,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:09,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:10,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:33:10,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:33:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:10,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 04:33:10,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 04:33:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:10,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 04:33:10,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:33:10,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117487499] [2020-10-13 04:33:10,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:10,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:10,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446775152] [2020-10-13 04:33:10,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:10,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:10,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:10,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:10,184 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 04:33:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:10,316 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2020-10-13 04:33:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:10,316 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-13 04:33:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:10,318 INFO L225 Difference]: With dead ends: 131 [2020-10-13 04:33:10,318 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 04:33:10,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 04:33:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 04:33:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 04:33:10,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 04:33:10,324 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 150 [2020-10-13 04:33:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:10,324 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 04:33:10,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 04:33:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 04:33:10,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:10,325 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:10,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:33:10,326 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:10,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:10,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1031029363, now seen corresponding path program 34 times [2020-10-13 04:33:10,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:10,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257061544] [2020-10-13 04:33:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 04:33:15,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:15,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:33:15,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 04:33:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:15,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:15,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:15,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:15,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:15,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:15,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:15,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:33:15,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:33:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:15,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 04:33:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:15,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:15,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:15,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:33:15,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2020-10-13 04:33:15,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257061544] [2020-10-13 04:33:15,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:15,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:15,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096261854] [2020-10-13 04:33:15,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:15,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:15,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:15,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:15,613 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 04:33:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:15,911 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-10-13 04:33:15,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:15,911 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 04:33:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:15,912 INFO L225 Difference]: With dead ends: 161 [2020-10-13 04:33:15,913 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 04:33:15,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:33:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 04:33:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 04:33:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 04:33:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 04:33:15,919 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 04:33:15,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:15,919 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 04:33:15,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 04:33:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 04:33:15,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:15,920 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:15,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:33:15,921 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:15,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:15,921 INFO L82 PathProgramCache]: Analyzing trace with hash -513082383, now seen corresponding path program 35 times [2020-10-13 04:33:15,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:15,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447695314] [2020-10-13 04:33:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:20,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:20,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 04:33:20,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:20,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:33:20,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:20,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:20,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:20,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:20,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:21,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:21,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:21,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:33:21,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:33:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:21,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:33:21,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 04:33:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:21,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:21,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:33:21,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:21,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1758 trivial. 0 not checked. [2020-10-13 04:33:21,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447695314] [2020-10-13 04:33:21,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:21,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:21,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175252343] [2020-10-13 04:33:21,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:21,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:21,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:21,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:21,201 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 04:33:21,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:21,343 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2020-10-13 04:33:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:21,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2020-10-13 04:33:21,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:21,344 INFO L225 Difference]: With dead ends: 166 [2020-10-13 04:33:21,344 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 04:33:21,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 04:33:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 04:33:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 04:33:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 04:33:21,350 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 158 [2020-10-13 04:33:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:21,350 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 04:33:21,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 04:33:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 04:33:21,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:21,351 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:21,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:33:21,351 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:21,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1713154259, now seen corresponding path program 36 times [2020-10-13 04:33:21,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:21,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071154741] [2020-10-13 04:33:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 04:33:26,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:26,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:33:26,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 04:33:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:26,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:26,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:26,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:26,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 04:33:26,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 04:33:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:26,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 04:33:26,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 04:33:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:26,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:26,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:26,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 04:33:26,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:26,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1927 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 04:33:26,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071154741] [2020-10-13 04:33:26,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:26,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:26,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460240746] [2020-10-13 04:33:26,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:26,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:26,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:26,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:26,726 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 04:33:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:26,829 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-10-13 04:33:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:26,829 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2020-10-13 04:33:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:26,831 INFO L225 Difference]: With dead ends: 139 [2020-10-13 04:33:26,831 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 04:33:26,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 04:33:26,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 04:33:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:33:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 04:33:26,835 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 160 [2020-10-13 04:33:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:26,836 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 04:33:26,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 04:33:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 04:33:26,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:26,837 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:26,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 04:33:26,838 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:26,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:26,838 INFO L82 PathProgramCache]: Analyzing trace with hash 212737617, now seen corresponding path program 37 times [2020-10-13 04:33:26,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:26,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777877248] [2020-10-13 04:33:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:26,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:31,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:31,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 04:33:31,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 04:33:31,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 04:33:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:31,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:31,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:31,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:31,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:31,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:31,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:31,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:31,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:31,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 04:33:31,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:31,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 04:33:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:31,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:31,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:31,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:31,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:33:31,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 04:33:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:32,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:32,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:32,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:33:32,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2020-10-13 04:33:32,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777877248] [2020-10-13 04:33:32,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:32,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:32,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662875974] [2020-10-13 04:33:32,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:32,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:32,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:32,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:32,158 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 04:33:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:32,531 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 04:33:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:32,531 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 04:33:32,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:32,532 INFO L225 Difference]: With dead ends: 171 [2020-10-13 04:33:32,532 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 04:33:32,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:33:32,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 04:33:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 04:33:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 04:33:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 04:33:32,539 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 04:33:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:32,539 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 04:33:32,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 04:33:32,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 04:33:32,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:32,541 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:32,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 04:33:32,541 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:32,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:32,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1704634289, now seen corresponding path program 38 times [2020-10-13 04:33:32,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:32,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227143817] [2020-10-13 04:33:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:32,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:37,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 04:33:37,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:33:37,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:37,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:37,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:37,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:37,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:37,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:37,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:33:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:37,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 04:33:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:37,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:37,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:37,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:37,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 04:33:37,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2020-10-13 04:33:37,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227143817] [2020-10-13 04:33:37,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:37,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:37,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961394621] [2020-10-13 04:33:37,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:37,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:37,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:37,857 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 04:33:38,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:38,008 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2020-10-13 04:33:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:38,009 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 04:33:38,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:38,010 INFO L225 Difference]: With dead ends: 176 [2020-10-13 04:33:38,010 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 04:33:38,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:38,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 04:33:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 04:33:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 04:33:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 04:33:38,017 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 04:33:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:38,017 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 04:33:38,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 04:33:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 04:33:38,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:38,019 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:38,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 04:33:38,019 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:38,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:38,020 INFO L82 PathProgramCache]: Analyzing trace with hash -808070479, now seen corresponding path program 39 times [2020-10-13 04:33:38,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:38,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018034820] [2020-10-13 04:33:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 04:33:43,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:33:43,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 04:33:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:43,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:43,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:33:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:43,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 04:33:43,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:43,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:33:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:43,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 04:33:43,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:43,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:43,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 04:33:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:43,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:43,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 04:33:43,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:43,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 04:33:43,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018034820] [2020-10-13 04:33:43,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:43,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:43,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587693876] [2020-10-13 04:33:43,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:43,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:43,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:43,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:43,498 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 04:33:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:43,652 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-13 04:33:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:43,652 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 04:33:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:43,654 INFO L225 Difference]: With dead ends: 147 [2020-10-13 04:33:43,654 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 04:33:43,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 04:33:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 04:33:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 04:33:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 04:33:43,661 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 04:33:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:43,661 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 04:33:43,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 04:33:43,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 04:33:43,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:43,664 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:43,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 04:33:43,664 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:43,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1086244689, now seen corresponding path program 40 times [2020-10-13 04:33:43,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:43,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026696312] [2020-10-13 04:33:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 04:33:48,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 04:33:48,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 04:33:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:48,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:48,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:48,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:48,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:33:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:48,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:48,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:33:48,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:48,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:33:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:48,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:48,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:48,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:48,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:48,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:48,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:48,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 04:33:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:49,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:49,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:49,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:33:49,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2020-10-13 04:33:49,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026696312] [2020-10-13 04:33:49,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:49,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:33:49,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471824837] [2020-10-13 04:33:49,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:33:49,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:49,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:33:49,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:49,032 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 04:33:49,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:49,422 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2020-10-13 04:33:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:33:49,423 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 04:33:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:49,424 INFO L225 Difference]: With dead ends: 181 [2020-10-13 04:33:49,424 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 04:33:49,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 04:33:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 04:33:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 04:33:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 04:33:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 04:33:49,431 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 04:33:49,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:49,431 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 04:33:49,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:33:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 04:33:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 04:33:49,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:49,433 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:49,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 04:33:49,433 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:49,433 INFO L82 PathProgramCache]: Analyzing trace with hash 337367853, now seen corresponding path program 41 times [2020-10-13 04:33:49,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:49,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647555298] [2020-10-13 04:33:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:49,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:54,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 04:33:54,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:54,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:33:54,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:54,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:54,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:54,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:54,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:54,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:54,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:33:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:54,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:54,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 04:33:54,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:54,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 04:33:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:54,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:54,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:54,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:33:54,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:54,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:54,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:54,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:54,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:54,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 04:33:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:54,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:54,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:54,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 04:33:54,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2522 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2326 trivial. 0 not checked. [2020-10-13 04:33:54,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647555298] [2020-10-13 04:33:54,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:54,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:33:54,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127257498] [2020-10-13 04:33:54,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:33:54,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:54,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:33:54,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:54,820 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 18 states. [2020-10-13 04:33:54,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:54,971 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2020-10-13 04:33:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:33:54,972 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-10-13 04:33:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:54,973 INFO L225 Difference]: With dead ends: 186 [2020-10-13 04:33:54,973 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 04:33:54,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 04:33:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 04:33:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 04:33:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 04:33:54,980 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 178 [2020-10-13 04:33:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:54,980 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 04:33:54,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:33:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 04:33:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 04:33:54,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:54,982 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:54,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 04:33:54,982 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:54,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:54,983 INFO L82 PathProgramCache]: Analyzing trace with hash 977812239, now seen corresponding path program 42 times [2020-10-13 04:33:54,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:54,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984388099] [2020-10-13 04:33:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 04:34:00,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:00,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:34:00,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:34:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 04:34:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:34:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:00,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:00,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:00,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:34:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:00,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 04:34:00,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 04:34:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:00,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:00,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 04:34:00,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:00,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 04:34:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:00,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:00,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:34:00,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:34:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 04:34:00,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984388099] [2020-10-13 04:34:00,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:00,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:34:00,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649178399] [2020-10-13 04:34:00,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:34:00,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:00,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:34:00,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:34:00,353 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 18 states. [2020-10-13 04:34:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:00,504 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2020-10-13 04:34:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:34:00,505 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 180 [2020-10-13 04:34:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:00,506 INFO L225 Difference]: With dead ends: 155 [2020-10-13 04:34:00,506 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 04:34:00,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:34:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 04:34:00,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 04:34:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 04:34:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 04:34:00,511 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 180 [2020-10-13 04:34:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:00,511 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 04:34:00,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:34:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 04:34:00,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 04:34:00,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:00,513 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:00,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 04:34:00,513 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:00,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2109469069, now seen corresponding path program 43 times [2020-10-13 04:34:00,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:00,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579583494] [2020-10-13 04:34:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:00,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking...