/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_25x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:04:30,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:04:30,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:04:30,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:04:30,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:04:30,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:04:30,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:04:30,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:04:30,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:04:30,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:04:30,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:04:30,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:04:30,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:04:30,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:04:30,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:04:30,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:04:30,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:04:30,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:04:30,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:04:30,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:04:30,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:04:30,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:04:30,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:04:30,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:04:30,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:04:30,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:04:30,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:04:30,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:04:30,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:04:30,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:04:30,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:04:30,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:04:30,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:04:30,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:04:30,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:04:30,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:04:30,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:04:30,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:04:30,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:04:30,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:04:30,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:04:30,475 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 [2020-09-25 02:04:30,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:04:30,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:04:30,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:04:30,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:04:30,527 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:04:30,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:04:30,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:04:30,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:04:30,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:04:30,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:04:30,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:04:30,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:04:30,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:04:30,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:04:30,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:04:30,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:04:30,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:04:30,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:04:30,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:04:30,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:04:30,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:04:30,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:04:30,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:04:30,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:04:30,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:04:30,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:04:30,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:04:30,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:04:30,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:04:30,534 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 -> SingleStatement 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; 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; 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; 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; 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; [2020-09-25 02:04:30,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:04:31,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:04:31,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:04:31,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:04:31,007 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:04:31,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-2.c [2020-09-25 02:04:31,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee03ba195/5b8b79a615bc48058e384b292bc58bad/FLAGe10317d8f [2020-09-25 02:04:31,626 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:04:31,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_25x0-2.c [2020-09-25 02:04:31,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee03ba195/5b8b79a615bc48058e384b292bc58bad/FLAGe10317d8f [2020-09-25 02:04:32,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee03ba195/5b8b79a615bc48058e384b292bc58bad [2020-09-25 02:04:32,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:04:32,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:04:32,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:32,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:04:32,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:04:32,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:32" (1/1) ... [2020-09-25 02:04:32,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194291ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32, skipping insertion in model container [2020-09-25 02:04:32,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:32" (1/1) ... [2020-09-25 02:04:32,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:04:32,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:04:32,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:32,290 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:04:32,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:32,328 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:04:32,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32 WrapperNode [2020-09-25 02:04:32,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:32,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:04:32,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:04:32,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:04:32,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32" (1/1) ... [2020-09-25 02:04:32,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32" (1/1) ... [2020-09-25 02:04:32,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32" (1/1) ... [2020-09-25 02:04:32,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32" (1/1) ... [2020-09-25 02:04:32,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32" (1/1) ... [2020-09-25 02:04:32,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32" (1/1) ... [2020-09-25 02:04:32,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32" (1/1) ... [2020-09-25 02:04:32,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:04:32,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:04:32,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:04:32,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:04:32,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32" (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 [2020-09-25 02:04:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:04:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:04:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 02:04:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:04:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:04:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 02:04:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:04:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:04:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:04:32,742 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:04:32,743 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:04:32,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:32 BoogieIcfgContainer [2020-09-25 02:04:32,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:04:32,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:04:32,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:04:32,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:04:32,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:04:32" (1/3) ... [2020-09-25 02:04:32,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5e6f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:32, skipping insertion in model container [2020-09-25 02:04:32,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:32" (2/3) ... [2020-09-25 02:04:32,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5e6f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:32, skipping insertion in model container [2020-09-25 02:04:32,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:32" (3/3) ... [2020-09-25 02:04:32,759 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_25x0-2.c [2020-09-25 02:04:32,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:04:32,787 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:04:32,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:04:32,874 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:04:32,874 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:04:32,874 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:04:32,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:04:32,875 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:04:32,875 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:04:32,875 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:04:32,875 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:04:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 02:04:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 02:04:32,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:32,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:32,921 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:32,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:32,927 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 02:04:32,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:32,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918420609] [2020-09-25 02:04:32,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:04:33,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 02:04:33,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:04:33,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:33,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:04:33,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:33,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:33,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 02:04:33,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:33,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:04:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:04:33,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918420609] [2020-09-25 02:04:33,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:04:33,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:04:33,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303896749] [2020-09-25 02:04:33,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:04:33,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:33,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:04:33,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:04:33,488 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 02:04:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:33,605 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 02:04:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:04:33,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 02:04:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:33,623 INFO L225 Difference]: With dead ends: 39 [2020-09-25 02:04:33,623 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 02:04:33,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:04:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 02:04:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 02:04:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 02:04:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 02:04:33,679 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 02:04:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:33,680 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 02:04:33,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:04:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 02:04:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 02:04:33,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:33,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:33,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:04:33,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:33,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 02:04:33,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:33,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560103173] [2020-09-25 02:04:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:34,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:34,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-09-25 02:04:34,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:04:34,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:04:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:34,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:04:34,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:34,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:04:34,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:34,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 02:04:34,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:04:34,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:34,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:04:34,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:34,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:04:34,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560103173] [2020-09-25 02:04:34,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:34,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:04:34,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392289444] [2020-09-25 02:04:34,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:04:34,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:34,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:04:34,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:04:34,587 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-09-25 02:04:34,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:34,659 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 02:04:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:04:34,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 02:04:34,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:34,662 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:04:34,662 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:04:34,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:34,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:04:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:04:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:04:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 02:04:34,671 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 02:04:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:34,672 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 02:04:34,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:04:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 02:04:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:04:34,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:34,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:34,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:04:34,674 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:34,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:34,675 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 02:04:34,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:34,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972570813] [2020-09-25 02:04:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:35,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:35,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:04:35,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:35,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-09-25 02:04:35,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:04:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:35,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:35,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:35,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:35,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:35,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:35,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:04:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 02:04:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:35,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:35,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:35,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 02:04:35,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:04:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:04:35,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:35,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:35,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 02:04:35,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:35,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:35,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:35,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:04:35,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 02:04:35,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972570813] [2020-09-25 02:04:35,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:35,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:04:35,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909196872] [2020-09-25 02:04:35,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:04:35,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:35,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:04:35,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:04:35,735 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 02:04:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:35,854 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 02:04:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:04:35,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 02:04:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:35,858 INFO L225 Difference]: With dead ends: 41 [2020-09-25 02:04:35,858 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 02:04:35,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:04:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 02:04:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 02:04:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 02:04:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 02:04:35,878 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 02:04:35,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:35,880 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 02:04:35,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:04:35,880 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 02:04:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 02:04:35,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:35,883 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:35,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:04:35,883 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:35,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 02:04:35,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:35,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449478630] [2020-09-25 02:04:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:04:36,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:36,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-09-25 02:04:36,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:04:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:04:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:36,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:36,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:36,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 02:04:36,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:04:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 02:04:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:37,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:37,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:37,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:37,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 02:04:37,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:37,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:37,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:37,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:37,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:37,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 02:04:37,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:37,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:37,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:37,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:37,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:37,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:37,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:04:37,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:37,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 02:04:37,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449478630] [2020-09-25 02:04:37,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:37,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:04:37,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219230336] [2020-09-25 02:04:37,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:04:37,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:37,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:04:37,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:37,243 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 02:04:37,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:37,360 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 02:04:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:04:37,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 02:04:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:37,363 INFO L225 Difference]: With dead ends: 46 [2020-09-25 02:04:37,363 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 02:04:37,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:04:37,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 02:04:37,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 02:04:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:04:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 02:04:37,372 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 02:04:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:37,373 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 02:04:37,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:04:37,373 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 02:04:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 02:04:37,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:37,375 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:37,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:04:37,376 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:37,377 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 02:04:37,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:37,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233670396] [2020-09-25 02:04:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:37,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:04:39,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2011 [2020-09-25 02:04:39,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:04:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:04:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:39,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:04:39,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:39,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:39,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 02:04:39,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:04:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:04:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:39,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 02:04:39,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:39,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:39,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:40,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:40,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:40,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 02:04:40,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:40,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:40,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:40,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:40,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:40,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 02:04:40,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:40,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:40,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:40,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:40,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:40,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:40,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:40,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:40,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:04:40,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:40,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:40,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 02:04:40,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233670396] [2020-09-25 02:04:40,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:40,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:04:40,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785799691] [2020-09-25 02:04:40,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:04:40,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:04:40,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:40,216 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-25 02:04:40,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:40,325 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 02:04:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:04:40,325 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-25 02:04:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:40,327 INFO L225 Difference]: With dead ends: 51 [2020-09-25 02:04:40,327 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 02:04:40,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:04:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 02:04:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 02:04:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 02:04:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 02:04:40,335 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 02:04:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:40,336 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 02:04:40,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:04:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 02:04:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 02:04:40,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:40,337 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:40,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:04:40,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:40,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 02:04:40,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:40,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675484477] [2020-09-25 02:04:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:40,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:44,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:44,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:04:44,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:44,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4183 [2020-09-25 02:04:44,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:44,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:04:44,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:44,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:04:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:44,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:44,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:44,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:44,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:44,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:44,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:44,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:44,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:44,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:44,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:44,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 02:04:44,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:04:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 02:04:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:44,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:45,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:45,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:45,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 02:04:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:45,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:45,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:45,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:45,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:45,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 02:04:45,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:45,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:45,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:45,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:45,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:45,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 02:04:45,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:45,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:45,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:45,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:45,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:45,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 02:04:45,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:45,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:45,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:45,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:45,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:45,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:04:45,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:45,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 72 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 02:04:45,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675484477] [2020-09-25 02:04:45,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:45,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:04:45,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839873396] [2020-09-25 02:04:45,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:04:45,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:45,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:04:45,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:04:45,585 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 02:04:45,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:45,714 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 02:04:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:04:45,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 02:04:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:45,716 INFO L225 Difference]: With dead ends: 56 [2020-09-25 02:04:45,716 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 02:04:45,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:04:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 02:04:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 02:04:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 02:04:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 02:04:45,724 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 02:04:45,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:45,725 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 02:04:45,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:04:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 02:04:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 02:04:45,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:45,727 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:45,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:04:45,727 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:45,728 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 02:04:45,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:45,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399356001] [2020-09-25 02:04:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:45,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:49,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:49,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 02:04:49,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4096 [2020-09-25 02:04:49,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:04:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 02:04:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:49,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:49,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:49,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:49,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:49,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:49,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:49,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:50,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-25 02:04:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:04:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:04:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:50,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:50,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 02:04:50,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:50,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:50,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:50,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 02:04:50,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:50,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:50,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 02:04:50,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:51,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:51,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:51,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:51,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 02:04:51,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:51,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:51,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:51,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:51,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:51,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 02:04:51,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:51,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:51,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:51,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:51,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:04:51,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-09-25 02:04:51,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399356001] [2020-09-25 02:04:51,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:51,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:04:51,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698731144] [2020-09-25 02:04:51,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:04:51,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:51,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:04:51,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:04:51,272 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 02:04:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:51,414 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 02:04:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:04:51,415 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 02:04:51,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:51,418 INFO L225 Difference]: With dead ends: 61 [2020-09-25 02:04:51,419 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 02:04:51,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:04:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 02:04:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 02:04:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:04:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 02:04:51,433 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 02:04:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:51,433 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 02:04:51,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:04:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 02:04:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 02:04:51,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:51,437 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:51,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:04:51,438 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:51,438 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 02:04:51,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:51,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217488306] [2020-09-25 02:04:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:56,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 02:04:56,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:04:56,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:04:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 02:04:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:56,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:56,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:56,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:56,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:56,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:56,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:56,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:56,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:56,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:56,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-25 02:04:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:04:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 02:04:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:56,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:57,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:57,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:57,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:57,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-09-25 02:04:57,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:57,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:57,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:57,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:57,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 02:04:57,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:57,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:57,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:57,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:57,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:57,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:57,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:57,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:57,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 02:04:57,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:57,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:58,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 02:04:58,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:58,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:58,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 02:04:58,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:58,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:58,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 02:04:58,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:58,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:04:58,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:58,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 14 proven. 137 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 02:04:58,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217488306] [2020-09-25 02:04:58,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:58,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:04:58,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175827727] [2020-09-25 02:04:58,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:04:58,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:58,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:04:58,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:04:58,429 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 14 states. [2020-09-25 02:04:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:58,568 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 02:04:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:04:58,568 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-09-25 02:04:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:58,570 INFO L225 Difference]: With dead ends: 66 [2020-09-25 02:04:58,570 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 02:04:58,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462 [2020-09-25 02:04:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 02:04:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 02:04:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 02:04:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 02:04:58,578 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 02:04:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:58,578 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 02:04:58,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:04:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 02:04:58,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 02:04:58,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:58,580 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:58,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:04:58,581 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:58,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:58,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 02:04:58,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:58,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460245870] [2020-09-25 02:04:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:03,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:03,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 02:05:03,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:05:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 02:05:03,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:05:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:05:03,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 02:05:03,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:03,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:03,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:03,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:05:03,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:05:03,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:03,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:03,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:04,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:04,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:05:04,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:04,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-25 02:05:04,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:05:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 02:05:04,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:04,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:04,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:04,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:04,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:05:04,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-25 02:05:04,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:05:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:05:04,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:04,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:04,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:04,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:04,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:05:04,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 02:05:04,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:05:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:05:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 02:05:05,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:05:05,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-25 02:05:05,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:05:05,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:05:05,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:05:05,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:05:05,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 02:05:05,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:05:05,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:05:05,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:05:05,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 02:05:05,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:05:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:05:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:05,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:05:05,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 02:05:05,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:05:05,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:05:05,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:05,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:05:05,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:05:05,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:05:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 3 proven. 196 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-25 02:05:05,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460245870] [2020-09-25 02:05:05,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:05,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:05:05,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014282785] [2020-09-25 02:05:05,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:05:05,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:05,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:05:05,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:05:05,985 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 15 states. [2020-09-25 02:05:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:06,146 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 02:05:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:05:06,147 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-09-25 02:05:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:06,148 INFO L225 Difference]: With dead ends: 71 [2020-09-25 02:05:06,148 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 02:05:06,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-09-25 02:05:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 02:05:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 02:05:06,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 02:05:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 02:05:06,156 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 02:05:06,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:06,156 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 02:05:06,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:05:06,156 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 02:05:06,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 02:05:06,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:06,158 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:06,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:05:06,158 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:06,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:06,159 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 02:05:06,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:06,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807357244] [2020-09-25 02:05:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:06,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 02:05:11,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:05:11,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:05:11,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:05:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:05:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 02:05:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:05:11,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:05:11,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:11,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:05:11,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-09-25 02:05:11,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:05:11,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 02:05:11,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:12,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:12,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:05:12,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:12,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-25 02:05:12,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:05:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:05:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:12,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:12,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:05:12,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-25 02:05:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:05:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:05:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:12,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:12,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:12,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:05:12,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 02:05:12,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:12,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:05:12,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:12,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:05:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:13,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:13,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:05:13,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 02:05:13,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:05:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:05:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:13,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:13,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:05:13,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 02:05:13,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:05:13,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:13,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:05:13,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:13,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:13,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:13,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:13,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:05:13,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 02:05:13,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:05:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:05:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:13,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:13,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:13,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:05:13,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 02:05:13,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:05:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:05:13,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:13,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:13,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:05:13,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 02:05:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:05:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:05:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:13,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:13,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:13,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:05:13,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:13,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:05:13,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:13,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:13,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:13,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:05:13,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 3 proven. 263 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-09-25 02:05:13,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807357244] [2020-09-25 02:05:13,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:13,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:05:13,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358134222] [2020-09-25 02:05:13,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:05:13,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:13,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:05:13,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:05:13,871 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 02:05:14,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:14,032 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 02:05:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:05:14,032 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 02:05:14,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:14,034 INFO L225 Difference]: With dead ends: 76 [2020-09-25 02:05:14,034 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:05:14,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:05:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:05:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 02:05:14,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:05:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 02:05:14,042 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 02:05:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:14,043 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 02:05:14,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:05:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 02:05:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 02:05:14,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:14,044 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:14,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:05:14,044 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:14,045 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 02:05:14,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:14,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195176799] [2020-09-25 02:05:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 02:05:19,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:05:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:05:19,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:05:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:05:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:05:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:05:19,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:05:19,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:19,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 02:05:19,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:19,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-09-25 02:05:19,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:05:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 02:05:19,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:19,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:20,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:20,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:05:20,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-25 02:05:20,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:05:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 02:05:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:20,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:20,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:05:20,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 02:05:20,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:05:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:05:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:20,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:21,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:21,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:05:21,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-09-25 02:05:21,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:05:21,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:21,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:05:21,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:21,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:21,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:21,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:05:21,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 02:05:21,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:05:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:05:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:21,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:05:22,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 02:05:22,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:05:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:05:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:22,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:05:22,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 02:05:22,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:05:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:05:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:05:22,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 02:05:22,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:05:22,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:05:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:05:22,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 02:05:22,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:05:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:05:22,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:05:22,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 02:05:22,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:05:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:05:22,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:22,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:05:22,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:05:22,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:05:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 48 proven. 266 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-09-25 02:05:22,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195176799] [2020-09-25 02:05:22,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:22,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:05:22,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350205234] [2020-09-25 02:05:22,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:05:22,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:22,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:05:22,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:05:22,826 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 02:05:23,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:23,046 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 02:05:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:05:23,046 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 02:05:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:23,048 INFO L225 Difference]: With dead ends: 81 [2020-09-25 02:05:23,048 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 02:05:23,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 02:05:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 02:05:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 02:05:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 02:05:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 02:05:23,060 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 02:05:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:23,061 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 02:05:23,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:05:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 02:05:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 02:05:23,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:23,063 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:23,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:05:23,063 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:23,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 02:05:23,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:23,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250076709] [2020-09-25 02:05:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:23,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking...