/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/pr2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:24:14,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:24:14,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:24:14,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:24:14,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:24:14,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:24:14,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:24:14,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:24:14,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:24:14,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:24:14,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:24:14,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:24:14,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:24:14,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:24:14,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:24:14,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:24:14,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:24:14,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:24:14,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:24:14,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:24:14,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:24:14,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:24:14,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:24:14,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:24:14,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:24:14,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:24:14,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:24:14,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:24:14,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:24:14,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:24:14,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:24:14,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:24:14,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:24:14,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:24:14,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:24:14,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:24:14,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:24:14,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:24:14,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:24:14,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:24:14,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:24:14,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 05:24:14,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:24:14,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:24:14,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:24:14,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:24:14,529 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:24:14,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:24:14,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:24:14,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:24:14,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:24:14,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:24:14,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:24:14,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:24:14,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:24:14,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:24:14,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:24:14,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:24:14,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:24:14,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:24:14,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:24:14,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:24:14,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:24:14,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:24:14,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:24:14,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:24:14,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:24:14,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:24:14,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:24:14,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:24:14,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:24:14,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:24:14,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:24:14,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:24:14,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:24:14,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:24:14,823 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:24:14,824 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr2.c [2020-10-13 05:24:14,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b3d8b20/955d0b95e0ea4f7ca926db40a67eb5d9/FLAGe02f004b7 [2020-10-13 05:24:15,312 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:24:15,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/pr2.c [2020-10-13 05:24:15,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b3d8b20/955d0b95e0ea4f7ca926db40a67eb5d9/FLAGe02f004b7 [2020-10-13 05:24:15,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b3d8b20/955d0b95e0ea4f7ca926db40a67eb5d9 [2020-10-13 05:24:15,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:24:15,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:24:15,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:24:15,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:24:15,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:24:15,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:24:15" (1/1) ... [2020-10-13 05:24:15,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dccfc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:15, skipping insertion in model container [2020-10-13 05:24:15,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:24:15" (1/1) ... [2020-10-13 05:24:15,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:24:15,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:24:16,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:24:16,009 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:24:16,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:24:16,074 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:24:16,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16 WrapperNode [2020-10-13 05:24:16,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:24:16,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:24:16,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:24:16,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:24:16,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16" (1/1) ... [2020-10-13 05:24:16,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16" (1/1) ... [2020-10-13 05:24:16,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16" (1/1) ... [2020-10-13 05:24:16,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16" (1/1) ... [2020-10-13 05:24:16,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16" (1/1) ... [2020-10-13 05:24:16,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16" (1/1) ... [2020-10-13 05:24:16,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16" (1/1) ... [2020-10-13 05:24:16,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:24:16,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:24:16,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:24:16,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:24:16,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:24:16,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:24:16,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:24:16,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 05:24:16,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:24:16,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:24:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:24:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:24:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 05:24:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:24:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:24:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:24:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 05:24:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 05:24:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 05:24:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 05:24:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:24:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:24:16,546 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:24:16,546 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:24:16,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:24:16 BoogieIcfgContainer [2020-10-13 05:24:16,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:24:16,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:24:16,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:24:16,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:24:16,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:24:15" (1/3) ... [2020-10-13 05:24:16,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78de5b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:24:16, skipping insertion in model container [2020-10-13 05:24:16,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:24:16" (2/3) ... [2020-10-13 05:24:16,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78de5b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:24:16, skipping insertion in model container [2020-10-13 05:24:16,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:24:16" (3/3) ... [2020-10-13 05:24:16,560 INFO L109 eAbstractionObserver]: Analyzing ICFG pr2.c [2020-10-13 05:24:16,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:24:16,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:24:16,594 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:24:16,619 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:24:16,619 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:24:16,619 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:24:16,619 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:24:16,619 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:24:16,620 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:24:16,620 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:24:16,620 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:24:16,640 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-13 05:24:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 05:24:16,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:16,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:16,649 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:16,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1637249035, now seen corresponding path program 1 times [2020-10-13 05:24:16,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:16,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649780509] [2020-10-13 05:24:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:17,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 05:24:17,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:24:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-10-13 05:24:17,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 05:24:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 05:24:17,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:17,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:17,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:24:17,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:17,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:17,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:17,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:17,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 05:24:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:17,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:17,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649780509] [2020-10-13 05:24:17,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:24:17,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:24:17,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955094371] [2020-10-13 05:24:17,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:24:17,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:17,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:24:17,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:24:17,903 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-13 05:24:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:18,014 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2020-10-13 05:24:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:24:18,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-13 05:24:18,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:18,024 INFO L225 Difference]: With dead ends: 61 [2020-10-13 05:24:18,024 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 05:24:18,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:24:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 05:24:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-13 05:24:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 05:24:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-13 05:24:18,068 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2020-10-13 05:24:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:18,069 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-13 05:24:18,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:24:18,069 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-13 05:24:18,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 05:24:18,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:18,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:18,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:24:18,071 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:18,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:18,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1895414473, now seen corresponding path program 1 times [2020-10-13 05:24:18,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:18,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279050742] [2020-10-13 05:24:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:18,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:18,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:18,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 05:24:18,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:24:18,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-13 05:24:18,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:24:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 05:24:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:18,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:18,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:18,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:18,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:18,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:18,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:18,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:18,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:18,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:18,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:18,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:18,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:18,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:18,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:18,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:18,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:18,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279050742] [2020-10-13 05:24:18,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:24:18,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:24:18,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809799480] [2020-10-13 05:24:18,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:24:18,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:18,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:24:18,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:24:18,726 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-10-13 05:24:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:18,896 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-10-13 05:24:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:24:18,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-13 05:24:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:18,898 INFO L225 Difference]: With dead ends: 38 [2020-10-13 05:24:18,898 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 05:24:18,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:24:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 05:24:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 05:24:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 05:24:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 05:24:18,908 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2020-10-13 05:24:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:18,909 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 05:24:18,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:24:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 05:24:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 05:24:18,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:18,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:18,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:24:18,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:18,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:18,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1897261515, now seen corresponding path program 1 times [2020-10-13 05:24:18,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:18,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58776740] [2020-10-13 05:24:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:18,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:19,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 05:24:19,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:24:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-13 05:24:19,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:24:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:24:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:24:19,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:19,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:19,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:19,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:19,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:19,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:19,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:19,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:24:19,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:24:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:24:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:19,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58776740] [2020-10-13 05:24:19,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:24:19,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 05:24:19,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292650654] [2020-10-13 05:24:19,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:24:19,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:19,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:24:19,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:24:19,397 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-13 05:24:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:19,743 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-13 05:24:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:24:19,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-13 05:24:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:19,748 INFO L225 Difference]: With dead ends: 63 [2020-10-13 05:24:19,749 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 05:24:19,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:24:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 05:24:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-10-13 05:24:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 05:24:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-13 05:24:19,762 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 22 [2020-10-13 05:24:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:19,762 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-13 05:24:19,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:24:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-13 05:24:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 05:24:19,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:19,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:19,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:24:19,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:19,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1589832270, now seen corresponding path program 1 times [2020-10-13 05:24:19,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:19,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243539312] [2020-10-13 05:24:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:19,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 05:24:19,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:19,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 05:24:19,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:19,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:24:19,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:19,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:24:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:19,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:19,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:19,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:19,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:19,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:19,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:20,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:20,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:20,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:20,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243539312] [2020-10-13 05:24:20,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:20,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:24:20,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424225630] [2020-10-13 05:24:20,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:24:20,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:20,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:24:20,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:24:20,013 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-10-13 05:24:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:20,294 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-10-13 05:24:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:24:20,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-13 05:24:20,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:20,296 INFO L225 Difference]: With dead ends: 77 [2020-10-13 05:24:20,297 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 05:24:20,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:24:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 05:24:20,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2020-10-13 05:24:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 05:24:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-13 05:24:20,307 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 26 [2020-10-13 05:24:20,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:20,308 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-13 05:24:20,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:24:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-13 05:24:20,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 05:24:20,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:20,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:20,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:24:20,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:20,310 INFO L82 PathProgramCache]: Analyzing trace with hash -888767692, now seen corresponding path program 1 times [2020-10-13 05:24:20,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:20,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666150195] [2020-10-13 05:24:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:20,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:20,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 05:24:20,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:24:20,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 05:24:20,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:24:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:24:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 05:24:20,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:20,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:20,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:20,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:20,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:20,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:20,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:20,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:20,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:20,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:20,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:24:20,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:20,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:20,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666150195] [2020-10-13 05:24:20,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:24:20,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:24:20,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302969555] [2020-10-13 05:24:20,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:24:20,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:20,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:24:20,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:24:20,550 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-10-13 05:24:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:20,656 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-10-13 05:24:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:24:20,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-13 05:24:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:20,658 INFO L225 Difference]: With dead ends: 70 [2020-10-13 05:24:20,658 INFO L226 Difference]: Without dead ends: 49 [2020-10-13 05:24:20,659 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 [2020-10-13 05:24:20,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-13 05:24:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-13 05:24:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 05:24:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-13 05:24:20,667 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 26 [2020-10-13 05:24:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:20,668 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-13 05:24:20,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:24:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-13 05:24:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 05:24:20,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:20,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:20,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:24:20,670 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:20,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1281794702, now seen corresponding path program 1 times [2020-10-13 05:24:20,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:20,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544662098] [2020-10-13 05:24:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:20,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:20,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 05:24:20,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:20,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 05:24:20,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:24:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 05:24:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:20,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:20,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:20,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:20,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:20,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:20,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:20,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:20,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:20,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:20,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:20,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:20,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:20,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544662098] [2020-10-13 05:24:20,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:20,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:24:20,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853359546] [2020-10-13 05:24:20,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:24:20,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:24:20,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:24:20,911 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 10 states. [2020-10-13 05:24:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:21,270 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2020-10-13 05:24:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 05:24:21,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-13 05:24:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:21,273 INFO L225 Difference]: With dead ends: 74 [2020-10-13 05:24:21,273 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 05:24:21,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:24:21,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 05:24:21,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 51. [2020-10-13 05:24:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 05:24:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-13 05:24:21,285 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 26 [2020-10-13 05:24:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:21,286 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-13 05:24:21,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:24:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-13 05:24:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 05:24:21,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:21,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:21,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:24:21,288 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:21,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:21,288 INFO L82 PathProgramCache]: Analyzing trace with hash -487965223, now seen corresponding path program 1 times [2020-10-13 05:24:21,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:21,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324978360] [2020-10-13 05:24:21,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 05:24:21,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:24:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 05:24:21,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 05:24:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:24:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:21,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:21,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:21,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:21,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:21,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:21,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:21,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324978360] [2020-10-13 05:24:21,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:24:21,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:24:21,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874816474] [2020-10-13 05:24:21,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:24:21,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:21,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:24:21,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:24:21,483 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 4 states. [2020-10-13 05:24:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:21,559 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-10-13 05:24:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:24:21,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-13 05:24:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:21,561 INFO L225 Difference]: With dead ends: 78 [2020-10-13 05:24:21,561 INFO L226 Difference]: Without dead ends: 57 [2020-10-13 05:24:21,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:24:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-13 05:24:21,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-10-13 05:24:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 05:24:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-13 05:24:21,570 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 30 [2020-10-13 05:24:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:21,570 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-13 05:24:21,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:24:21,570 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-13 05:24:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 05:24:21,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:21,572 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, 1, 1, 1] [2020-10-13 05:24:21,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:24:21,572 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:21,572 INFO L82 PathProgramCache]: Analyzing trace with hash 814956567, now seen corresponding path program 1 times [2020-10-13 05:24:21,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:21,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307978980] [2020-10-13 05:24:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 05:24:21,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:21,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 05:24:21,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:21,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 05:24:21,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:24:21,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:21,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:21,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:21,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:21,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:21,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:21,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:21,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:21,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:21,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:21,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:21,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307978980] [2020-10-13 05:24:21,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:24:21,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:24:21,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190164981] [2020-10-13 05:24:21,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:24:21,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:21,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:24:21,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:24:21,661 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 4 states. [2020-10-13 05:24:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:21,738 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-10-13 05:24:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:24:21,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-13 05:24:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:21,739 INFO L225 Difference]: With dead ends: 73 [2020-10-13 05:24:21,739 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 05:24:21,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:24:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 05:24:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-13 05:24:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 05:24:21,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-13 05:24:21,747 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 30 [2020-10-13 05:24:21,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:21,747 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-13 05:24:21,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:24:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-13 05:24:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 05:24:21,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:21,749 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:21,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:24:21,749 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:21,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2079637061, now seen corresponding path program 1 times [2020-10-13 05:24:21,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:21,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106712888] [2020-10-13 05:24:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 05:24:21,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:21,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 05:24:21,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:24:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 05:24:21,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:21,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:21,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:21,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:21,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:21,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:21,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:21,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:21,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:21,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:21,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 05:24:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:21,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:21,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:21,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:21,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:21,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:24:21,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:21,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:21,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:21,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106712888] [2020-10-13 05:24:21,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:21,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:24:21,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516216384] [2020-10-13 05:24:21,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:24:21,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:21,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:24:21,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:24:21,979 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 8 states. [2020-10-13 05:24:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:22,291 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2020-10-13 05:24:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:24:22,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-13 05:24:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:22,292 INFO L225 Difference]: With dead ends: 91 [2020-10-13 05:24:22,292 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 05:24:22,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:24:22,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 05:24:22,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2020-10-13 05:24:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 05:24:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-13 05:24:22,302 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 35 [2020-10-13 05:24:22,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:22,302 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-13 05:24:22,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:24:22,302 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-13 05:24:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 05:24:22,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:22,304 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:22,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:24:22,305 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:22,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:22,305 INFO L82 PathProgramCache]: Analyzing trace with hash 390693319, now seen corresponding path program 1 times [2020-10-13 05:24:22,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:22,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137129617] [2020-10-13 05:24:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:22,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:22,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:22,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 05:24:22,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:22,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 05:24:22,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:24:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:24:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:22,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:22,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:22,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:22,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:22,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:22,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:22,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:22,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:22,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:22,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:22,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:22,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:22,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:22,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 05:24:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:22,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:22,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:22,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:24:22,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137129617] [2020-10-13 05:24:22,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:22,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:24:22,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087673323] [2020-10-13 05:24:22,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:24:22,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:22,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:24:22,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:24:22,554 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 10 states. [2020-10-13 05:24:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:22,952 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2020-10-13 05:24:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 05:24:22,953 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-13 05:24:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:22,954 INFO L225 Difference]: With dead ends: 97 [2020-10-13 05:24:22,954 INFO L226 Difference]: Without dead ends: 95 [2020-10-13 05:24:22,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:24:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-13 05:24:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2020-10-13 05:24:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 05:24:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2020-10-13 05:24:22,967 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 35 [2020-10-13 05:24:22,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:22,967 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2020-10-13 05:24:22,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:24:22,967 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2020-10-13 05:24:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 05:24:22,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:22,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:22,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:24:22,969 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:22,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:22,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1367268032, now seen corresponding path program 1 times [2020-10-13 05:24:22,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:22,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253789781] [2020-10-13 05:24:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:24:23,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 05:24:23,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:24:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:24:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:23,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:23,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:23,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:23,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:23,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:23,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:23,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:23,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:23,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:23,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:23,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:23,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:23,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:23,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:23,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 05:24:23,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253789781] [2020-10-13 05:24:23,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:24:23,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:24:23,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010306326] [2020-10-13 05:24:23,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:24:23,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:23,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:24:23,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:24:23,081 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand 4 states. [2020-10-13 05:24:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:23,158 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2020-10-13 05:24:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:24:23,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-13 05:24:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:23,161 INFO L225 Difference]: With dead ends: 108 [2020-10-13 05:24:23,161 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 05:24:23,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:24:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 05:24:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2020-10-13 05:24:23,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 05:24:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-10-13 05:24:23,174 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 39 [2020-10-13 05:24:23,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:23,175 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-10-13 05:24:23,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:24:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-10-13 05:24:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 05:24:23,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:23,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:23,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:24:23,177 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:23,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:23,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1483762624, now seen corresponding path program 2 times [2020-10-13 05:24:23,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:23,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220686763] [2020-10-13 05:24:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:24:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:23,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 05:24:23,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:24:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:24:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:23,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:23,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:23,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:23,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:23,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:23,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:23,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 05:24:23,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220686763] [2020-10-13 05:24:23,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:24:23,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:24:23,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244798212] [2020-10-13 05:24:23,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:24:23,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:24:23,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:24:23,296 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 4 states. [2020-10-13 05:24:23,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:23,372 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2020-10-13 05:24:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:24:23,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-13 05:24:23,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:23,373 INFO L225 Difference]: With dead ends: 104 [2020-10-13 05:24:23,373 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 05:24:23,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:24:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 05:24:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-13 05:24:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 05:24:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-10-13 05:24:23,383 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 39 [2020-10-13 05:24:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:23,383 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-10-13 05:24:23,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:24:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-10-13 05:24:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 05:24:23,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:23,385 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:23,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:24:23,385 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:23,385 INFO L82 PathProgramCache]: Analyzing trace with hash 931531538, now seen corresponding path program 2 times [2020-10-13 05:24:23,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:23,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319569224] [2020-10-13 05:24:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 05:24:23,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:24:23,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-13 05:24:23,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:24:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:24:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 05:24:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:24,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:24,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:24,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:24,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:24,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:24,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:24:24,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:24:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:24:24,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 05:24:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:24,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:24:24,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:24,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:24,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:24,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 05:24:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:24,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:24:24,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:24,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:24,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 05:24:24,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319569224] [2020-10-13 05:24:24,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:24,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:24:24,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80655557] [2020-10-13 05:24:24,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:24:24,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:24,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:24:24,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:24:24,125 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand 12 states. [2020-10-13 05:24:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:24,711 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2020-10-13 05:24:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 05:24:24,711 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-13 05:24:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:24,712 INFO L225 Difference]: With dead ends: 146 [2020-10-13 05:24:24,713 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 05:24:24,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:24:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 05:24:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-10-13 05:24:24,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 05:24:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2020-10-13 05:24:24,732 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 44 [2020-10-13 05:24:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:24,733 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2020-10-13 05:24:24,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:24:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2020-10-13 05:24:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:24:24,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:24,734 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:24,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:24:24,734 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:24,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:24,735 INFO L82 PathProgramCache]: Analyzing trace with hash 132923321, now seen corresponding path program 3 times [2020-10-13 05:24:24,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:24,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880879031] [2020-10-13 05:24:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 05:24:24,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 05:24:24,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:24:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 05:24:24,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:25,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:25,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:25,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:25,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:25,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:25,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:25,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:25,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:25,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:25,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:25,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:25,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:25,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:25,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:25,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:25,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:24:25,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:25,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:24:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:25,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:25,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:25,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:25,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:25,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 05:24:25,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880879031] [2020-10-13 05:24:25,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:25,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:24:25,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165373097] [2020-10-13 05:24:25,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:24:25,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:25,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:24:25,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:24:25,152 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand 11 states. [2020-10-13 05:24:25,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:25,557 INFO L93 Difference]: Finished difference Result 135 states and 156 transitions. [2020-10-13 05:24:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 05:24:25,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-13 05:24:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:25,558 INFO L225 Difference]: With dead ends: 135 [2020-10-13 05:24:25,559 INFO L226 Difference]: Without dead ends: 119 [2020-10-13 05:24:25,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:24:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-13 05:24:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2020-10-13 05:24:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 05:24:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2020-10-13 05:24:25,580 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 48 [2020-10-13 05:24:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:25,580 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2020-10-13 05:24:25,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:24:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2020-10-13 05:24:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:24:25,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:25,581 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:25,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:24:25,582 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:25,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:25,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1212026681, now seen corresponding path program 1 times [2020-10-13 05:24:25,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:25,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034565028] [2020-10-13 05:24:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:30,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:30,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 05:24:30,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:24:30,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:24:30,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:30,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:24:30,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:24:30,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:24:30,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:30,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:30,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:30,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:30,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:30,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:30,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:30,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:30,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:30,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:30,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:30,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:30,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:24:30,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:30,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:30,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:30,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:30,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:30,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:30,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:30,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:24:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:30,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:30,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:30,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:30,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:30,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:30,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:30,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 05:24:30,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034565028] [2020-10-13 05:24:30,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:30,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:24:30,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323896179] [2020-10-13 05:24:30,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:24:30,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:30,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:24:30,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:24:30,908 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand 10 states. [2020-10-13 05:24:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:31,308 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2020-10-13 05:24:31,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:24:31,308 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-13 05:24:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:31,309 INFO L225 Difference]: With dead ends: 126 [2020-10-13 05:24:31,309 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 05:24:31,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:24:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 05:24:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2020-10-13 05:24:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 05:24:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-10-13 05:24:31,323 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 48 [2020-10-13 05:24:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:31,323 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-10-13 05:24:31,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:24:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-10-13 05:24:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:24:31,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:31,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:31,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 05:24:31,325 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:31,325 INFO L82 PathProgramCache]: Analyzing trace with hash -593411653, now seen corresponding path program 2 times [2020-10-13 05:24:31,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:31,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733083866] [2020-10-13 05:24:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:31,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:35,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:36,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:36,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 05:24:36,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:24:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:24:36,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:24:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 05:24:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:36,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:36,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:36,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:36,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:36,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:36,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:36,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:36,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:36,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:36,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:36,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:36,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:36,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:36,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:24:36,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:24:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:24:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:24:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:36,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 05:24:36,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733083866] [2020-10-13 05:24:36,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:36,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:24:36,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893417973] [2020-10-13 05:24:36,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:24:36,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:36,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:24:36,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:24:36,609 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 14 states. [2020-10-13 05:24:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:37,171 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2020-10-13 05:24:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:24:37,172 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-13 05:24:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:37,173 INFO L225 Difference]: With dead ends: 120 [2020-10-13 05:24:37,173 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 05:24:37,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:24:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 05:24:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2020-10-13 05:24:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 05:24:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2020-10-13 05:24:37,189 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 48 [2020-10-13 05:24:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:37,190 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2020-10-13 05:24:37,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:24:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2020-10-13 05:24:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:24:37,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:37,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:37,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 05:24:37,191 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:37,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1604528903, now seen corresponding path program 1 times [2020-10-13 05:24:37,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:37,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636005885] [2020-10-13 05:24:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:37,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:37,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:37,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 05:24:37,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:37,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 05:24:37,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:24:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 05:24:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:37,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:37,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:37,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:37,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:37,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:37,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:37,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:37,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:37,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:37,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:37,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:37,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:37,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:37,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:37,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:37,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:37,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:37,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:37,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:24:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:37,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:37,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:37,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:37,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:37,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 05:24:37,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636005885] [2020-10-13 05:24:37,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:37,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:24:37,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274261273] [2020-10-13 05:24:37,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:24:37,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:37,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:24:37,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:24:37,529 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 13 states. [2020-10-13 05:24:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:38,054 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2020-10-13 05:24:38,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 05:24:38,056 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-13 05:24:38,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:38,057 INFO L225 Difference]: With dead ends: 131 [2020-10-13 05:24:38,058 INFO L226 Difference]: Without dead ends: 129 [2020-10-13 05:24:38,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:24:38,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-13 05:24:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2020-10-13 05:24:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 05:24:38,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-10-13 05:24:38,076 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 48 [2020-10-13 05:24:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:38,076 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-10-13 05:24:38,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:24:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-10-13 05:24:38,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 05:24:38,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:38,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:38,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 05:24:38,078 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:38,078 INFO L82 PathProgramCache]: Analyzing trace with hash -457774050, now seen corresponding path program 4 times [2020-10-13 05:24:38,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:38,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299908973] [2020-10-13 05:24:38,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:38,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 05:24:38,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:38,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 05:24:38,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:24:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 05:24:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:38,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:38,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:38,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:38,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:38,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:38,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:38,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:38,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:38,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:38,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:38,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:38,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:38,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:24:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:38,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:38,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:38,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:38,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:38,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 05:24:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:38,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:38,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:38,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:38,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:38,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 05:24:38,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299908973] [2020-10-13 05:24:38,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:38,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:24:38,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43714958] [2020-10-13 05:24:38,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:24:38,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:38,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:24:38,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:24:38,419 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 11 states. [2020-10-13 05:24:38,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:38,942 INFO L93 Difference]: Finished difference Result 152 states and 173 transitions. [2020-10-13 05:24:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 05:24:38,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 05:24:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:38,945 INFO L225 Difference]: With dead ends: 152 [2020-10-13 05:24:38,945 INFO L226 Difference]: Without dead ends: 136 [2020-10-13 05:24:38,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:24:38,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-13 05:24:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 105. [2020-10-13 05:24:38,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 05:24:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2020-10-13 05:24:38,976 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 57 [2020-10-13 05:24:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:38,976 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2020-10-13 05:24:38,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:24:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2020-10-13 05:24:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 05:24:38,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:38,978 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:38,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 05:24:38,978 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:38,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:38,978 INFO L82 PathProgramCache]: Analyzing trace with hash 625404194, now seen corresponding path program 2 times [2020-10-13 05:24:38,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:38,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679535979] [2020-10-13 05:24:38,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:40,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:40,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 05:24:40,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:24:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-10-13 05:24:40,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:24:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:24:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 05:24:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:40,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:40,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:40,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:40,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:40,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:40,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:40,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:40,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:40,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:40,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:40,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:40,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:40,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:24:40,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:40,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:40,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:40,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:40,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:40,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:40,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:40,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:24:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:40,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:40,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:40,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:40,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:40,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 05:24:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:40,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:40,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:40,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:40,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:40,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-13 05:24:40,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679535979] [2020-10-13 05:24:40,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:40,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:24:40,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268532472] [2020-10-13 05:24:40,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:24:40,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:40,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:24:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:24:40,938 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand 11 states. [2020-10-13 05:24:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:41,333 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2020-10-13 05:24:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:24:41,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 05:24:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:41,335 INFO L225 Difference]: With dead ends: 136 [2020-10-13 05:24:41,335 INFO L226 Difference]: Without dead ends: 115 [2020-10-13 05:24:41,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:24:41,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-13 05:24:41,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2020-10-13 05:24:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 05:24:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2020-10-13 05:24:41,351 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 57 [2020-10-13 05:24:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:41,352 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2020-10-13 05:24:41,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:24:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2020-10-13 05:24:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 05:24:41,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:41,353 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:41,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 05:24:41,353 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:41,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1180034140, now seen corresponding path program 3 times [2020-10-13 05:24:41,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:41,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552589617] [2020-10-13 05:24:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:41,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:41,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 05:24:41,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 05:24:41,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:24:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 05:24:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:41,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:41,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:41,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:41,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:41,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:41,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:41,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:41,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:41,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:41,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:41,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:41,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:41,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:41,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:41,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:41,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:41,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:41,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:41,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:41,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:41,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:24:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:41,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:41,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:41,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:41,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:41,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:41,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 05:24:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:41,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:41,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:41,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:41,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:41,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 05:24:41,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552589617] [2020-10-13 05:24:41,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:41,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:24:41,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838775187] [2020-10-13 05:24:41,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:24:41,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:41,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:24:41,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:24:41,683 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 13 states. [2020-10-13 05:24:42,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:42,426 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2020-10-13 05:24:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 05:24:42,427 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-13 05:24:42,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:42,428 INFO L225 Difference]: With dead ends: 150 [2020-10-13 05:24:42,428 INFO L226 Difference]: Without dead ends: 148 [2020-10-13 05:24:42,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:24:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-13 05:24:42,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 119. [2020-10-13 05:24:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 05:24:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2020-10-13 05:24:42,449 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 57 [2020-10-13 05:24:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:42,449 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2020-10-13 05:24:42,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:24:42,449 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2020-10-13 05:24:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 05:24:42,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:42,457 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:42,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 05:24:42,457 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:42,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2077793959, now seen corresponding path program 5 times [2020-10-13 05:24:42,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:42,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454151739] [2020-10-13 05:24:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:42,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:42,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:42,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:24:42,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:24:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-13 05:24:42,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:24:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:24:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 05:24:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:43,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:43,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:43,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:43,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:43,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:43,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:43,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:43,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:43,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:24:43,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:24:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:24:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:43,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:24:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:43,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:43,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:43,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:43,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:43,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:24:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:43,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:43,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:43,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:43,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 05:24:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:43,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:43,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 05:24:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:43,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:43,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:43,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:43,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 05:24:43,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454151739] [2020-10-13 05:24:43,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:43,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:24:43,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911109482] [2020-10-13 05:24:43,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:24:43,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:43,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:24:43,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:24:43,375 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand 15 states. [2020-10-13 05:24:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:43,970 INFO L93 Difference]: Finished difference Result 231 states and 257 transitions. [2020-10-13 05:24:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:24:43,971 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-13 05:24:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:43,972 INFO L225 Difference]: With dead ends: 231 [2020-10-13 05:24:43,972 INFO L226 Difference]: Without dead ends: 140 [2020-10-13 05:24:43,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:24:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-13 05:24:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 131. [2020-10-13 05:24:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 05:24:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2020-10-13 05:24:43,991 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 66 [2020-10-13 05:24:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:43,991 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2020-10-13 05:24:43,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:24:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2020-10-13 05:24:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 05:24:43,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:43,993 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:43,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 05:24:43,993 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:43,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:43,993 INFO L82 PathProgramCache]: Analyzing trace with hash -578187584, now seen corresponding path program 6 times [2020-10-13 05:24:43,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:43,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523298796] [2020-10-13 05:24:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:44,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:44,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 05:24:44,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:44,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-13 05:24:44,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:24:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:44,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 05:24:44,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:44,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:44,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:44,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:44,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:44,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:44,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:44,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:44,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:44,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:44,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:44,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:44,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:44,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:24:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:44,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:44,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:44,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:44,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:24:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:44,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:44,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:44,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:44,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:44,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:44,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:44,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:24:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:44,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:44,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:44,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:44,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:44,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:44,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:24:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:44,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:44,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:44,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:44,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:44,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 05:24:44,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523298796] [2020-10-13 05:24:44,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:44,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:24:44,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836566046] [2020-10-13 05:24:44,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:24:44,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:44,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:24:44,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:24:44,547 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand 14 states. [2020-10-13 05:24:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:45,478 INFO L93 Difference]: Finished difference Result 194 states and 221 transitions. [2020-10-13 05:24:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 05:24:45,479 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-13 05:24:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:45,480 INFO L225 Difference]: With dead ends: 194 [2020-10-13 05:24:45,480 INFO L226 Difference]: Without dead ends: 178 [2020-10-13 05:24:45,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2020-10-13 05:24:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-13 05:24:45,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 142. [2020-10-13 05:24:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-13 05:24:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2020-10-13 05:24:45,500 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 70 [2020-10-13 05:24:45,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:45,501 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2020-10-13 05:24:45,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:24:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2020-10-13 05:24:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 05:24:45,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:45,502 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:45,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 05:24:45,502 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:45,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:45,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1448541120, now seen corresponding path program 3 times [2020-10-13 05:24:45,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:45,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182533135] [2020-10-13 05:24:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:45,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:45,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:50,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:50,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 05:24:50,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 05:24:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:24:50,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:50,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:24:50,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:50,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 05:24:50,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:50,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:50,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:50,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:50,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:50,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:50,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:50,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:50,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:50,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:50,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:50,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:50,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:50,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:24:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:50,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:50,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:50,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:24:50,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:24:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:24:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:24:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:50,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:50,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:50,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:24:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:50,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:50,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:50,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:50,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:24:50,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:50,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:24:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:50,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:50,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:50,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:50,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:24:50,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 34 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 05:24:50,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182533135] [2020-10-13 05:24:50,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:50,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:24:50,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947256992] [2020-10-13 05:24:50,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:24:50,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:50,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:24:50,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:24:50,776 INFO L87 Difference]: Start difference. First operand 142 states and 160 transitions. Second operand 16 states. [2020-10-13 05:24:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:51,525 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2020-10-13 05:24:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 05:24:51,526 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-13 05:24:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:51,530 INFO L225 Difference]: With dead ends: 173 [2020-10-13 05:24:51,530 INFO L226 Difference]: Without dead ends: 147 [2020-10-13 05:24:51,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:24:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-13 05:24:51,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2020-10-13 05:24:51,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-13 05:24:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 157 transitions. [2020-10-13 05:24:51,563 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 157 transitions. Word has length 70 [2020-10-13 05:24:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:51,564 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 157 transitions. [2020-10-13 05:24:51,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:24:51,564 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 157 transitions. [2020-10-13 05:24:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 05:24:51,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:51,570 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:51,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 05:24:51,570 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:51,570 INFO L82 PathProgramCache]: Analyzing trace with hash -356897214, now seen corresponding path program 4 times [2020-10-13 05:24:51,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:51,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447949162] [2020-10-13 05:24:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:56,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 05:24:56,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 05:24:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 05:24:56,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:24:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 05:24:56,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:56,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:56,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:56,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:56,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:56,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:56,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:24:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:56,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:56,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:56,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:24:56,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:24:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:24:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:56,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:24:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:56,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:24:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:56,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:56,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:56,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:56,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:56,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:56,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:56,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:56,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:24:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:56,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:56,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:56,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 28 proven. 43 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:24:56,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447949162] [2020-10-13 05:24:56,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:56,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:24:56,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872349301] [2020-10-13 05:24:56,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:24:56,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:56,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:24:56,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:24:56,922 INFO L87 Difference]: Start difference. First operand 141 states and 157 transitions. Second operand 17 states. [2020-10-13 05:24:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:57,931 INFO L93 Difference]: Finished difference Result 170 states and 191 transitions. [2020-10-13 05:24:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 05:24:57,931 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-13 05:24:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:57,933 INFO L225 Difference]: With dead ends: 170 [2020-10-13 05:24:57,933 INFO L226 Difference]: Without dead ends: 154 [2020-10-13 05:24:57,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:24:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-13 05:24:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-13 05:24:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-13 05:24:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2020-10-13 05:24:57,953 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 70 [2020-10-13 05:24:57,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:57,954 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2020-10-13 05:24:57,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:24:57,954 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2020-10-13 05:24:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 05:24:57,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:57,955 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:57,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 05:24:57,956 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:57,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1368014464, now seen corresponding path program 2 times [2020-10-13 05:24:57,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:57,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002846965] [2020-10-13 05:24:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:58,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 05:24:58,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-13 05:24:58,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:24:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 05:24:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:58,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:58,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:58,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:58,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:58,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:58,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:58,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:58,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:58,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:58,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:58,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:58,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:58,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:24:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:58,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:58,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:58,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:58,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:24:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:58,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:58,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:58,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:58,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:24:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:58,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:58,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:58,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:58,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:58,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:24:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:58,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:58,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:58,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:58,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:58,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 05:24:58,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002846965] [2020-10-13 05:24:58,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:58,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:24:58,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50849198] [2020-10-13 05:24:58,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:24:58,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:58,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:24:58,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:24:58,462 INFO L87 Difference]: Start difference. First operand 141 states and 156 transitions. Second operand 16 states. [2020-10-13 05:24:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:59,521 INFO L93 Difference]: Finished difference Result 186 states and 209 transitions. [2020-10-13 05:24:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 05:24:59,522 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-13 05:24:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:59,523 INFO L225 Difference]: With dead ends: 186 [2020-10-13 05:24:59,524 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 05:24:59,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 05:24:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 05:24:59,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 150. [2020-10-13 05:24:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 05:24:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2020-10-13 05:24:59,544 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 70 [2020-10-13 05:24:59,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:59,544 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2020-10-13 05:24:59,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:24:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2020-10-13 05:24:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 05:24:59,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:59,546 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:59,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 05:24:59,546 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:59,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1738839287, now seen corresponding path program 7 times [2020-10-13 05:24:59,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:59,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493494313] [2020-10-13 05:24:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:59,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:59,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 05:24:59,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-13 05:24:59,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:24:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 05:24:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:59,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:59,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:59,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:59,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:59,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:59,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:59,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:59,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:59,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:59,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:59,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:59,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:24:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:59,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:59,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:59,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:59,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:59,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:59,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:59,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:24:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:59,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:59,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:59,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:59,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:59,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:24:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:59,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:59,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:59,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:59,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:59,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:24:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:59,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:59,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:59,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:59,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:59,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:59,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:24:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:59,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:59,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:59,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:59,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 15 proven. 75 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 05:24:59,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493494313] [2020-10-13 05:24:59,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:59,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:24:59,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955734925] [2020-10-13 05:24:59,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:24:59,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:59,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:24:59,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:24:59,934 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand 14 states. [2020-10-13 05:25:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:00,941 INFO L93 Difference]: Finished difference Result 211 states and 238 transitions. [2020-10-13 05:25:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 05:25:00,943 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2020-10-13 05:25:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:00,945 INFO L225 Difference]: With dead ends: 211 [2020-10-13 05:25:00,945 INFO L226 Difference]: Without dead ends: 195 [2020-10-13 05:25:00,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 05:25:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-13 05:25:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 155. [2020-10-13 05:25:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-13 05:25:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 172 transitions. [2020-10-13 05:25:00,967 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 172 transitions. Word has length 79 [2020-10-13 05:25:00,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:00,967 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 172 transitions. [2020-10-13 05:25:00,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:25:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 172 transitions. [2020-10-13 05:25:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 05:25:00,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:00,969 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:00,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 05:25:00,969 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:00,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash -602392705, now seen corresponding path program 4 times [2020-10-13 05:25:00,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:00,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695338034] [2020-10-13 05:25:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:05,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 05:25:05,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:25:05,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:25:05,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:25:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 05:25:05,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:06,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:06,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:06,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:06,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:06,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:06,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:06,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:06,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:06,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:06,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:06,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:06,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:06,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:06,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:06,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:06,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:25:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:06,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:06,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:06,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:06,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:25:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:06,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:06,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:25:06,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:25:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:25:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:06,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:25:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:06,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:06,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:06,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:06,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:06,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:25:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:06,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:06,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:06,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:25:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:06,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:25:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:06,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:06,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:06,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:06,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:25:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 50 proven. 43 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 05:25:06,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695338034] [2020-10-13 05:25:06,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:06,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:25:06,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575153025] [2020-10-13 05:25:06,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:25:06,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:06,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:25:06,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:25:06,233 INFO L87 Difference]: Start difference. First operand 155 states and 172 transitions. Second operand 17 states. [2020-10-13 05:25:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:07,129 INFO L93 Difference]: Finished difference Result 186 states and 208 transitions. [2020-10-13 05:25:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 05:25:07,130 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-10-13 05:25:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:07,131 INFO L225 Difference]: With dead ends: 186 [2020-10-13 05:25:07,131 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 05:25:07,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:25:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 05:25:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 155. [2020-10-13 05:25:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-13 05:25:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 171 transitions. [2020-10-13 05:25:07,153 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 171 transitions. Word has length 79 [2020-10-13 05:25:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:07,153 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 171 transitions. [2020-10-13 05:25:07,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:25:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 171 transitions. [2020-10-13 05:25:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 05:25:07,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:07,155 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:07,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 05:25:07,156 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:07,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1887136257, now seen corresponding path program 5 times [2020-10-13 05:25:07,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:07,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252630026] [2020-10-13 05:25:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:07,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 05:25:07,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:07,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-13 05:25:07,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:25:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 05:25:07,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:07,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:07,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:07,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:07,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:07,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:07,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:07,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:07,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:07,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:07,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:07,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:07,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:25:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:07,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:07,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:07,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:07,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:07,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:25:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:07,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:07,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:07,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:07,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:07,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:07,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:07,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:07,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:25:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:07,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:07,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:07,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:07,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:07,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:25:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:07,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:07,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:07,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:07,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:07,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:07,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:25:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:07,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:07,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:07,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 05:25:07,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252630026] [2020-10-13 05:25:07,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:07,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:25:07,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632988638] [2020-10-13 05:25:07,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:25:07,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:07,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:25:07,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:25:07,671 INFO L87 Difference]: Start difference. First operand 155 states and 171 transitions. Second operand 16 states. [2020-10-13 05:25:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:08,988 INFO L93 Difference]: Finished difference Result 205 states and 230 transitions. [2020-10-13 05:25:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 05:25:08,989 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-13 05:25:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:08,992 INFO L225 Difference]: With dead ends: 205 [2020-10-13 05:25:08,992 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 05:25:08,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=1323, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:25:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 05:25:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 169. [2020-10-13 05:25:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 05:25:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 187 transitions. [2020-10-13 05:25:09,027 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 187 transitions. Word has length 79 [2020-10-13 05:25:09,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:09,027 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 187 transitions. [2020-10-13 05:25:09,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:25:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 187 transitions. [2020-10-13 05:25:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 05:25:09,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:09,029 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:09,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 05:25:09,030 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:09,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:09,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1079483552, now seen corresponding path program 8 times [2020-10-13 05:25:09,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:09,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078075873] [2020-10-13 05:25:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 05:25:09,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:25:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-13 05:25:09,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:25:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:25:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 05:25:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:09,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:25:09,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:25:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:25:09,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:25:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:25:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:25:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:25:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:25:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 05:25:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 05:25:09,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078075873] [2020-10-13 05:25:09,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:09,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:25:09,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989050934] [2020-10-13 05:25:09,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:25:09,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:09,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:25:09,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:25:09,741 INFO L87 Difference]: Start difference. First operand 169 states and 187 transitions. Second operand 18 states. [2020-10-13 05:25:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:10,532 INFO L93 Difference]: Finished difference Result 319 states and 353 transitions. [2020-10-13 05:25:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 05:25:10,532 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 88 [2020-10-13 05:25:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:10,533 INFO L225 Difference]: With dead ends: 319 [2020-10-13 05:25:10,534 INFO L226 Difference]: Without dead ends: 190 [2020-10-13 05:25:10,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:25:10,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-13 05:25:10,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 181. [2020-10-13 05:25:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 05:25:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 199 transitions. [2020-10-13 05:25:10,558 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 199 transitions. Word has length 88 [2020-10-13 05:25:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:10,558 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 199 transitions. [2020-10-13 05:25:10,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:25:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 199 transitions. [2020-10-13 05:25:10,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 05:25:10,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:10,560 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:10,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 05:25:10,560 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:10,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:10,560 INFO L82 PathProgramCache]: Analyzing trace with hash 371110599, now seen corresponding path program 9 times [2020-10-13 05:25:10,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:10,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413637269] [2020-10-13 05:25:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:10,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:10,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 05:25:10,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-13 05:25:10,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:25:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 05:25:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:11,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:11,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:11,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:11,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:11,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:11,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:11,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:11,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:11,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:25:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:11,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:11,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:11,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:11,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:11,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:11,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:25:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:11,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:11,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:11,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:11,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:11,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:25:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:11,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:11,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:11,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:11,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:25:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:11,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:11,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:11,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:11,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:25:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:11,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:11,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:11,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:11,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:11,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:11,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:11,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:11,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:25:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:11,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:11,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:11,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:11,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:11,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:11,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 18 proven. 115 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 05:25:11,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413637269] [2020-10-13 05:25:11,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:11,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:25:11,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008607109] [2020-10-13 05:25:11,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:25:11,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:25:11,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:25:11,071 INFO L87 Difference]: Start difference. First operand 181 states and 199 transitions. Second operand 17 states. [2020-10-13 05:25:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:12,521 INFO L93 Difference]: Finished difference Result 249 states and 281 transitions. [2020-10-13 05:25:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 05:25:12,522 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2020-10-13 05:25:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:12,524 INFO L225 Difference]: With dead ends: 249 [2020-10-13 05:25:12,524 INFO L226 Difference]: Without dead ends: 233 [2020-10-13 05:25:12,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=1844, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 05:25:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-13 05:25:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 192. [2020-10-13 05:25:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 05:25:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2020-10-13 05:25:12,552 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 92 [2020-10-13 05:25:12,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:12,552 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2020-10-13 05:25:12,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:25:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2020-10-13 05:25:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 05:25:12,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:12,554 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:12,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 05:25:12,555 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:12,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:12,555 INFO L82 PathProgramCache]: Analyzing trace with hash 280431943, now seen corresponding path program 5 times [2020-10-13 05:25:12,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:12,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940175938] [2020-10-13 05:25:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 05:25:17,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:25:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 05:25:17,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:25:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 05:25:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:17,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:17,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:17,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:17,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:17,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:17,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:25:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:17,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:17,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:25:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:17,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:25:17,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:25:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:25:17,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:25:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:17,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:17,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:17,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:25:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:17,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:17,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:17,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:25:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:17,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:17,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:25:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:25:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:17,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:17,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:25:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 63 proven. 76 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-13 05:25:17,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940175938] [2020-10-13 05:25:17,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:17,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:25:17,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633781452] [2020-10-13 05:25:17,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:25:17,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:17,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:25:17,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:25:17,942 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand 19 states. [2020-10-13 05:25:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:18,804 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2020-10-13 05:25:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 05:25:18,804 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 92 [2020-10-13 05:25:18,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:18,806 INFO L225 Difference]: With dead ends: 223 [2020-10-13 05:25:18,806 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 05:25:18,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2020-10-13 05:25:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 05:25:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2020-10-13 05:25:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-13 05:25:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2020-10-13 05:25:18,838 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 92 [2020-10-13 05:25:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:18,839 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2020-10-13 05:25:18,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:25:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2020-10-13 05:25:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 05:25:18,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:18,841 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:18,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 05:25:18,841 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:18,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:18,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1525006391, now seen corresponding path program 6 times [2020-10-13 05:25:18,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:18,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619278243] [2020-10-13 05:25:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:19,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:19,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:23,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:23,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 05:25:23,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:25:23,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 05:25:23,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:23,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:25:23,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:23,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 05:25:23,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:24,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:24,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:24,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:24,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:24,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:24,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:24,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:24,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:24,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:25:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:24,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:24,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:24,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:24,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:24,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:24,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:25:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:24,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:24,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:24,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:24,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:25:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:24,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:24,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:24,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:24,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:24,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:24,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:25:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:24,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:24,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:24,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:24,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:24,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:24,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:25:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:24,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:24,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:24,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:24,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:24,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:24,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:24,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:25:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:24,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:25:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 44 proven. 86 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 05:25:24,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619278243] [2020-10-13 05:25:24,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:24,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:25:24,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785619917] [2020-10-13 05:25:24,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:25:24,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:24,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:25:24,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:25:24,290 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand 18 states. [2020-10-13 05:25:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:25,269 INFO L93 Difference]: Finished difference Result 224 states and 249 transitions. [2020-10-13 05:25:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:25:25,269 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 92 [2020-10-13 05:25:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:25,271 INFO L225 Difference]: With dead ends: 224 [2020-10-13 05:25:25,271 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 05:25:25,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:25:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 05:25:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2020-10-13 05:25:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-13 05:25:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 209 transitions. [2020-10-13 05:25:25,295 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 209 transitions. Word has length 92 [2020-10-13 05:25:25,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:25,296 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 209 transitions. [2020-10-13 05:25:25,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:25:25,296 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 209 transitions. [2020-10-13 05:25:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 05:25:25,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:25,297 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:25,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 05:25:25,298 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:25,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:25,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1758843655, now seen corresponding path program 3 times [2020-10-13 05:25:25,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:25,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39622308] [2020-10-13 05:25:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:25,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 05:25:25,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-13 05:25:25,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:25:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 05:25:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:25,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:25,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:25,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:25,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:25,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:25,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:25,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:25,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:25,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:25,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:25,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:25:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:25:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:25:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:25:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:25:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:25:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 05:25:26,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39622308] [2020-10-13 05:25:26,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:26,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:25:26,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699204582] [2020-10-13 05:25:26,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:25:26,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:26,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:25:26,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:25:26,038 INFO L87 Difference]: Start difference. First operand 191 states and 209 transitions. Second operand 19 states. [2020-10-13 05:25:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:27,815 INFO L93 Difference]: Finished difference Result 241 states and 268 transitions. [2020-10-13 05:25:27,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 05:25:27,816 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 92 [2020-10-13 05:25:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:27,818 INFO L225 Difference]: With dead ends: 241 [2020-10-13 05:25:27,818 INFO L226 Difference]: Without dead ends: 239 [2020-10-13 05:25:27,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=1862, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 05:25:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-13 05:25:27,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 200. [2020-10-13 05:25:27,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 05:25:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2020-10-13 05:25:27,847 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 92 [2020-10-13 05:25:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:27,848 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2020-10-13 05:25:27,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:25:27,848 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2020-10-13 05:25:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 05:25:27,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:27,849 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:27,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 05:25:27,850 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:27,850 INFO L82 PathProgramCache]: Analyzing trace with hash 144312528, now seen corresponding path program 10 times [2020-10-13 05:25:27,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:27,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210730044] [2020-10-13 05:25:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:27,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 05:25:28,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-13 05:25:28,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:25:28,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 05:25:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:28,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:28,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:28,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:28,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:28,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:25:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:28,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:28,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:28,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:25:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:28,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:28,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:25:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:28,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:28,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:28,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:28,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:28,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:25:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:28,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:28,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:25:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:28,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:28,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:25:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:28,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:28,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:28,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 05:25:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:28,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:28,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:28,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 21 proven. 147 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 05:25:28,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210730044] [2020-10-13 05:25:28,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:28,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:25:28,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683679679] [2020-10-13 05:25:28,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:25:28,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:28,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:25:28,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:25:28,397 INFO L87 Difference]: Start difference. First operand 200 states and 219 transitions. Second operand 17 states. [2020-10-13 05:25:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:29,986 INFO L93 Difference]: Finished difference Result 264 states and 294 transitions. [2020-10-13 05:25:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 05:25:29,987 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-10-13 05:25:29,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:29,989 INFO L225 Difference]: With dead ends: 264 [2020-10-13 05:25:29,989 INFO L226 Difference]: Without dead ends: 248 [2020-10-13 05:25:29,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 05:25:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-13 05:25:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 205. [2020-10-13 05:25:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 05:25:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 225 transitions. [2020-10-13 05:25:30,019 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 225 transitions. Word has length 101 [2020-10-13 05:25:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:30,019 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 225 transitions. [2020-10-13 05:25:30,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:25:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 225 transitions. [2020-10-13 05:25:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 05:25:30,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:30,021 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:30,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 05:25:30,021 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:30,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1742111522, now seen corresponding path program 6 times [2020-10-13 05:25:30,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:30,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485957845] [2020-10-13 05:25:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 05:25:30,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-13 05:25:30,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:25:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 05:25:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:30,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:30,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:30,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:30,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:25:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:30,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:30,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:25:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:30,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:30,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:30,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:25:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:30,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:30,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:30,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:25:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:30,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:30,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:25:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:30,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:30,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:25:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:30,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:30,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:30,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 05:25:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:30,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:30,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:30,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:30,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 05:25:30,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485957845] [2020-10-13 05:25:30,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:30,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:25:30,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786715199] [2020-10-13 05:25:30,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:25:30,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:25:30,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:25:30,605 INFO L87 Difference]: Start difference. First operand 205 states and 225 transitions. Second operand 19 states. [2020-10-13 05:25:32,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:32,666 INFO L93 Difference]: Finished difference Result 260 states and 290 transitions. [2020-10-13 05:25:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 05:25:32,667 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2020-10-13 05:25:32,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:32,669 INFO L225 Difference]: With dead ends: 260 [2020-10-13 05:25:32,669 INFO L226 Difference]: Without dead ends: 258 [2020-10-13 05:25:32,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=236, Invalid=2416, Unknown=0, NotChecked=0, Total=2652 [2020-10-13 05:25:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-13 05:25:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 219. [2020-10-13 05:25:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-13 05:25:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 241 transitions. [2020-10-13 05:25:32,721 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 241 transitions. Word has length 101 [2020-10-13 05:25:32,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:32,722 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 241 transitions. [2020-10-13 05:25:32,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:25:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 241 transitions. [2020-10-13 05:25:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 05:25:32,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:32,725 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:32,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 05:25:32,726 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:32,726 INFO L82 PathProgramCache]: Analyzing trace with hash -216765209, now seen corresponding path program 11 times [2020-10-13 05:25:32,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:32,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953107552] [2020-10-13 05:25:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:32,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:33,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:33,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 05:25:33,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:25:33,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-10-13 05:25:33,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:25:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:25:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 05:25:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:34,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:34,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:34,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:25:34,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:25:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:25:34,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:25:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:34,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:25:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:25:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:25:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:25:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:25:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:34,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 05:25:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 05:25:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:34,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 180 proven. 28 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 05:25:34,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953107552] [2020-10-13 05:25:34,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:34,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 05:25:34,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033529159] [2020-10-13 05:25:34,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 05:25:34,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:34,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 05:25:34,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:25:34,785 INFO L87 Difference]: Start difference. First operand 219 states and 241 transitions. Second operand 21 states. [2020-10-13 05:25:35,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:35,951 INFO L93 Difference]: Finished difference Result 407 states and 449 transitions. [2020-10-13 05:25:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:25:35,951 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 110 [2020-10-13 05:25:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:35,952 INFO L225 Difference]: With dead ends: 407 [2020-10-13 05:25:35,953 INFO L226 Difference]: Without dead ends: 240 [2020-10-13 05:25:35,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 05:25:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-13 05:25:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 231. [2020-10-13 05:25:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-13 05:25:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 253 transitions. [2020-10-13 05:25:35,981 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 253 transitions. Word has length 110 [2020-10-13 05:25:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:35,981 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 253 transitions. [2020-10-13 05:25:35,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 05:25:35,981 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 253 transitions. [2020-10-13 05:25:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 05:25:35,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:35,982 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:35,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 05:25:35,982 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:35,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1168811058, now seen corresponding path program 12 times [2020-10-13 05:25:35,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:35,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830720159] [2020-10-13 05:25:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 05:25:36,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-13 05:25:36,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:25:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 05:25:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:36,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:36,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:36,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:36,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:36,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:36,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:25:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:36,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:36,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:25:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:36,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:36,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 05:25:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:36,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:36,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:36,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 05:25:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:36,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:36,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:36,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:25:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:36,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:36,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:36,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 05:25:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:36,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:36,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:36,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 05:25:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:36,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:36,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:36,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 05:25:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:36,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:36,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 24 proven. 201 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 05:25:36,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830720159] [2020-10-13 05:25:36,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:36,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:25:36,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114154674] [2020-10-13 05:25:36,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:25:36,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:36,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:25:36,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:25:36,673 INFO L87 Difference]: Start difference. First operand 231 states and 253 transitions. Second operand 20 states. [2020-10-13 05:25:38,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:38,939 INFO L93 Difference]: Finished difference Result 304 states and 341 transitions. [2020-10-13 05:25:38,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-13 05:25:38,940 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 114 [2020-10-13 05:25:38,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:38,943 INFO L225 Difference]: With dead ends: 304 [2020-10-13 05:25:38,943 INFO L226 Difference]: Without dead ends: 288 [2020-10-13 05:25:38,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=321, Invalid=3219, Unknown=0, NotChecked=0, Total=3540 [2020-10-13 05:25:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-13 05:25:38,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 242. [2020-10-13 05:25:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-13 05:25:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 268 transitions. [2020-10-13 05:25:38,982 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 268 transitions. Word has length 114 [2020-10-13 05:25:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:38,983 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 268 transitions. [2020-10-13 05:25:38,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:25:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 268 transitions. [2020-10-13 05:25:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 05:25:38,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:38,984 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:38,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 05:25:38,985 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:38,985 INFO L82 PathProgramCache]: Analyzing trace with hash -269487154, now seen corresponding path program 7 times [2020-10-13 05:25:38,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:38,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877626031] [2020-10-13 05:25:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:39,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:43,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 05:25:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 05:25:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 05:25:44,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:25:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 05:25:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:44,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:44,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:25:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:44,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:44,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:25:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:44,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:44,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 05:25:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:44,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:44,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 05:25:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:25:44,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:25:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:25:44,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:25:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:25:44,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 05:25:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:44,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 05:25:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:25:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 05:25:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:25:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 95 proven. 142 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 05:25:44,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877626031] [2020-10-13 05:25:44,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:44,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:25:44,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944037562] [2020-10-13 05:25:44,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:25:44,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:44,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:25:44,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:25:44,680 INFO L87 Difference]: Start difference. First operand 242 states and 268 transitions. Second operand 22 states. [2020-10-13 05:25:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:46,770 INFO L93 Difference]: Finished difference Result 273 states and 304 transitions. [2020-10-13 05:25:46,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 05:25:46,771 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 114 [2020-10-13 05:25:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:46,773 INFO L225 Difference]: With dead ends: 273 [2020-10-13 05:25:46,773 INFO L226 Difference]: Without dead ends: 247 [2020-10-13 05:25:46,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2020-10-13 05:25:46,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-13 05:25:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 241. [2020-10-13 05:25:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-13 05:25:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 265 transitions. [2020-10-13 05:25:46,809 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 265 transitions. Word has length 114 [2020-10-13 05:25:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:46,810 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 265 transitions. [2020-10-13 05:25:46,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:25:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 265 transitions. [2020-10-13 05:25:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 05:25:46,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:46,812 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:46,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 05:25:46,812 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:46,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:46,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2074925488, now seen corresponding path program 8 times [2020-10-13 05:25:46,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:46,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652392311] [2020-10-13 05:25:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:51,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:51,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 05:25:51,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:25:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 05:25:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:25:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 05:25:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:52,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:52,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:52,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:52,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:52,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:25:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:52,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:52,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:25:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:52,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:52,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:52,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 05:25:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:52,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:52,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 05:25:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:25:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:25:52,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:25:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:52,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:52,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 05:25:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:52,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:52,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 05:25:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:52,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:52,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 05:25:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:52,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 69 proven. 174 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 05:25:52,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652392311] [2020-10-13 05:25:52,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:52,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:25:52,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186069532] [2020-10-13 05:25:52,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:25:52,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:25:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:25:52,331 INFO L87 Difference]: Start difference. First operand 241 states and 265 transitions. Second operand 23 states. [2020-10-13 05:25:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:53,870 INFO L93 Difference]: Finished difference Result 274 states and 303 transitions. [2020-10-13 05:25:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 05:25:53,871 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 114 [2020-10-13 05:25:53,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:53,872 INFO L225 Difference]: With dead ends: 274 [2020-10-13 05:25:53,872 INFO L226 Difference]: Without dead ends: 253 [2020-10-13 05:25:53,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 05:25:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-13 05:25:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 241. [2020-10-13 05:25:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-13 05:25:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 263 transitions. [2020-10-13 05:25:53,916 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 263 transitions. Word has length 114 [2020-10-13 05:25:53,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:53,917 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 263 transitions. [2020-10-13 05:25:53,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:25:53,917 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 263 transitions. [2020-10-13 05:25:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 05:25:53,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:53,919 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:53,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 05:25:53,919 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:53,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1208924558, now seen corresponding path program 4 times [2020-10-13 05:25:53,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:53,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818878097] [2020-10-13 05:25:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 05:25:54,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-13 05:25:54,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:25:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 05:25:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:54,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:54,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:54,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:54,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:25:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:54,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:54,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:25:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:54,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 05:25:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:54,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:54,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 05:25:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:54,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:54,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:25:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:54,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:54,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:54,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 05:25:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:54,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:54,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:54,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 05:25:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:54,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:54,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:54,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 05:25:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:54,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:54,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:54,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:54,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:54,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 16 proven. 209 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 05:25:54,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818878097] [2020-10-13 05:25:54,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:54,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:25:54,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106166451] [2020-10-13 05:25:54,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:25:54,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:54,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:25:54,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:25:54,757 INFO L87 Difference]: Start difference. First operand 241 states and 263 transitions. Second operand 22 states. [2020-10-13 05:25:57,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:57,216 INFO L93 Difference]: Finished difference Result 296 states and 328 transitions. [2020-10-13 05:25:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 05:25:57,217 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 114 [2020-10-13 05:25:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:57,218 INFO L225 Difference]: With dead ends: 296 [2020-10-13 05:25:57,218 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 05:25:57,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=276, Invalid=2804, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 05:25:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 05:25:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 250. [2020-10-13 05:25:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 05:25:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 273 transitions. [2020-10-13 05:25:57,257 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 273 transitions. Word has length 114 [2020-10-13 05:25:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:57,257 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 273 transitions. [2020-10-13 05:25:57,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:25:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 273 transitions. [2020-10-13 05:25:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 05:25:57,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:57,259 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:57,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 05:25:57,259 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:57,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash -355231831, now seen corresponding path program 13 times [2020-10-13 05:25:57,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:57,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005530945] [2020-10-13 05:25:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:57,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:57,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 05:25:57,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-13 05:25:57,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:25:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 05:25:57,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:58,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:58,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:58,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:58,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:25:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:58,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:58,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:25:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:58,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 05:25:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:25:58,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 05:25:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:58,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:58,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:25:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:58,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:58,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 05:25:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:58,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:58,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 05:25:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:25:58,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 05:25:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:58,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:58,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:25:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:58,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:58,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:58,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:58,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:58,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:58,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:58,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:25:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 27 proven. 243 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 05:25:58,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005530945] [2020-10-13 05:25:58,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:58,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:25:58,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352407450] [2020-10-13 05:25:58,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:25:58,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:58,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:25:58,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:25:58,170 INFO L87 Difference]: Start difference. First operand 250 states and 273 transitions. Second operand 20 states. [2020-10-13 05:26:00,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:00,651 INFO L93 Difference]: Finished difference Result 319 states and 354 transitions. [2020-10-13 05:26:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-13 05:26:00,652 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 123 [2020-10-13 05:26:00,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:00,654 INFO L225 Difference]: With dead ends: 319 [2020-10-13 05:26:00,654 INFO L226 Difference]: Without dead ends: 303 [2020-10-13 05:26:00,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=316, Invalid=3466, Unknown=0, NotChecked=0, Total=3782 [2020-10-13 05:26:00,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-13 05:26:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 255. [2020-10-13 05:26:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-13 05:26:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 279 transitions. [2020-10-13 05:26:00,686 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 279 transitions. Word has length 123 [2020-10-13 05:26:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:00,686 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 279 transitions. [2020-10-13 05:26:00,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:26:00,686 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 279 transitions. [2020-10-13 05:26:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 05:26:00,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:00,688 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:00,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 05:26:00,688 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:00,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:00,688 INFO L82 PathProgramCache]: Analyzing trace with hash -587701189, now seen corresponding path program 7 times [2020-10-13 05:26:00,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:00,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281206576] [2020-10-13 05:26:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 05:26:01,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-13 05:26:01,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:26:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-13 05:26:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:01,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:26:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:26:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 05:26:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 05:26:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:26:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 05:26:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 05:26:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 05:26:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:26:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 18 proven. 252 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 05:26:01,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281206576] [2020-10-13 05:26:01,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:01,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:26:01,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613715170] [2020-10-13 05:26:01,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:26:01,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:01,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:26:01,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:26:01,600 INFO L87 Difference]: Start difference. First operand 255 states and 279 transitions. Second operand 22 states. [2020-10-13 05:26:04,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:04,601 INFO L93 Difference]: Finished difference Result 315 states and 350 transitions. [2020-10-13 05:26:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-13 05:26:04,602 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 123 [2020-10-13 05:26:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:04,605 INFO L225 Difference]: With dead ends: 315 [2020-10-13 05:26:04,605 INFO L226 Difference]: Without dead ends: 313 [2020-10-13 05:26:04,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=313, Invalid=3719, Unknown=0, NotChecked=0, Total=4032 [2020-10-13 05:26:04,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-13 05:26:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 269. [2020-10-13 05:26:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-13 05:26:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 295 transitions. [2020-10-13 05:26:04,637 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 295 transitions. Word has length 123 [2020-10-13 05:26:04,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:04,637 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 295 transitions. [2020-10-13 05:26:04,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:26:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 295 transitions. [2020-10-13 05:26:04,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 05:26:04,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:04,639 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:04,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 05:26:04,639 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:04,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:04,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1341882926, now seen corresponding path program 14 times [2020-10-13 05:26:04,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:04,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494208757] [2020-10-13 05:26:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 05:26:05,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:26:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-13 05:26:05,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:26:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:26:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-13 05:26:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:06,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:26:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:26:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:26:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:26:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 05:26:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 05:26:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 05:26:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:26:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 05:26:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 05:26:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 05:26:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 05:26:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 05:26:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:06,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:06,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:06,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:06,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 275 proven. 45 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 05:26:06,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494208757] [2020-10-13 05:26:06,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:06,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:26:06,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629117436] [2020-10-13 05:26:06,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:26:06,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:06,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:26:06,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:26:06,317 INFO L87 Difference]: Start difference. First operand 269 states and 295 transitions. Second operand 24 states. [2020-10-13 05:26:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:07,740 INFO L93 Difference]: Finished difference Result 495 states and 545 transitions. [2020-10-13 05:26:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 05:26:07,741 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-10-13 05:26:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:07,742 INFO L225 Difference]: With dead ends: 495 [2020-10-13 05:26:07,742 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 05:26:07,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 05:26:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 05:26:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 281. [2020-10-13 05:26:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-13 05:26:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 307 transitions. [2020-10-13 05:26:07,778 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 307 transitions. Word has length 132 [2020-10-13 05:26:07,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:07,778 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 307 transitions. [2020-10-13 05:26:07,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:26:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 307 transitions. [2020-10-13 05:26:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 05:26:07,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:07,780 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:07,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 05:26:07,780 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:07,781 INFO L82 PathProgramCache]: Analyzing trace with hash 913783253, now seen corresponding path program 15 times [2020-10-13 05:26:07,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:07,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160491111] [2020-10-13 05:26:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 05:26:08,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-13 05:26:08,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:26:08,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:08,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 05:26:08,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:08,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:08,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:26:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:26:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:26:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:26:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:26:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:26:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:26:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 05:26:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:26:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 05:26:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:08,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:08,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:08,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:08,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:08,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:08,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:08,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 30 proven. 311 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 05:26:08,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160491111] [2020-10-13 05:26:08,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:08,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:26:08,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90038769] [2020-10-13 05:26:08,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:26:08,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:08,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:26:08,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:26:08,709 INFO L87 Difference]: Start difference. First operand 281 states and 307 transitions. Second operand 23 states. [2020-10-13 05:26:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:12,005 INFO L93 Difference]: Finished difference Result 359 states and 401 transitions. [2020-10-13 05:26:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-13 05:26:12,006 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 136 [2020-10-13 05:26:12,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:12,008 INFO L225 Difference]: With dead ends: 359 [2020-10-13 05:26:12,008 INFO L226 Difference]: Without dead ends: 343 [2020-10-13 05:26:12,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=414, Invalid=4842, Unknown=0, NotChecked=0, Total=5256 [2020-10-13 05:26:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-13 05:26:12,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 292. [2020-10-13 05:26:12,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-13 05:26:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 322 transitions. [2020-10-13 05:26:12,051 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 322 transitions. Word has length 136 [2020-10-13 05:26:12,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:12,051 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 322 transitions. [2020-10-13 05:26:12,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:26:12,051 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 322 transitions. [2020-10-13 05:26:12,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 05:26:12,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:12,053 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 9, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:12,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 05:26:12,054 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:12,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash 691232597, now seen corresponding path program 9 times [2020-10-13 05:26:12,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:12,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743306976] [2020-10-13 05:26:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:12,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:12,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:13,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:15,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 05:26:17,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 05:26:17,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 05:26:17,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:26:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:26:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 05:26:17,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:17,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:17,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:17,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:17,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:17,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:17,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:17,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:26:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:17,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:17,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:26:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:17,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:17,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:17,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:26:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:17,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:26:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:17,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:17,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:17,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:26:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:17,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:17,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:26:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:26:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:17,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:17,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 05:26:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:17,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:17,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:26:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:17,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:26:17,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:17,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 05:26:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:17,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:17,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:17,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:17,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:17,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:26:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 112 proven. 222 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-13 05:26:17,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743306976] [2020-10-13 05:26:17,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:17,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:26:17,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933579484] [2020-10-13 05:26:17,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:26:17,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:17,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:26:17,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:26:17,778 INFO L87 Difference]: Start difference. First operand 292 states and 322 transitions. Second operand 22 states. [2020-10-13 05:26:20,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:20,491 INFO L93 Difference]: Finished difference Result 341 states and 379 transitions. [2020-10-13 05:26:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 05:26:20,495 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 136 [2020-10-13 05:26:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:20,497 INFO L225 Difference]: With dead ends: 341 [2020-10-13 05:26:20,497 INFO L226 Difference]: Without dead ends: 315 [2020-10-13 05:26:20,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=273, Invalid=1889, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 05:26:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-13 05:26:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 291. [2020-10-13 05:26:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-13 05:26:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 319 transitions. [2020-10-13 05:26:20,544 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 319 transitions. Word has length 136 [2020-10-13 05:26:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:20,544 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 319 transitions. [2020-10-13 05:26:20,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:26:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 319 transitions. [2020-10-13 05:26:20,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 05:26:20,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:20,546 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:20,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 05:26:20,547 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:20,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:20,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1114205737, now seen corresponding path program 10 times [2020-10-13 05:26:20,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:20,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208054979] [2020-10-13 05:26:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:21,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:21,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 05:26:25,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:26:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 05:26:25,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 05:26:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 05:26:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:26,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:26,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:26,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:26:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:26,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:26:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:26,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:26,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:26:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:26,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:26,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:26:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:26,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:26,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:26:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:26,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:26,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:26,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:26:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:26,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:26:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:26,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 05:26:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:26,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:26:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:26,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 05:26:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:26,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:26,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:26,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:26,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:26:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:26,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 76 proven. 262 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-13 05:26:26,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208054979] [2020-10-13 05:26:26,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:26,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:26:26,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942644689] [2020-10-13 05:26:26,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:26:26,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:26,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:26:26,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:26:26,410 INFO L87 Difference]: Start difference. First operand 291 states and 319 transitions. Second operand 24 states. [2020-10-13 05:26:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:28,502 INFO L93 Difference]: Finished difference Result 324 states and 357 transitions. [2020-10-13 05:26:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:26:28,503 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 136 [2020-10-13 05:26:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:28,506 INFO L225 Difference]: With dead ends: 324 [2020-10-13 05:26:28,506 INFO L226 Difference]: Without dead ends: 303 [2020-10-13 05:26:28,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 05:26:28,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-13 05:26:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2020-10-13 05:26:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-13 05:26:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 317 transitions. [2020-10-13 05:26:28,548 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 317 transitions. Word has length 136 [2020-10-13 05:26:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:28,548 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 317 transitions. [2020-10-13 05:26:28,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:26:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 317 transitions. [2020-10-13 05:26:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 05:26:28,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:28,550 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:28,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 05:26:28,551 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:28,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:28,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2125322987, now seen corresponding path program 5 times [2020-10-13 05:26:28,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:28,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070364232] [2020-10-13 05:26:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 05:26:29,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-13 05:26:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:26:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 05:26:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:29,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:29,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:26:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:26:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:26:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:26:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:26:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:26:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:26:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 05:26:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:26:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 05:26:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:29,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:29,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:29,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 20 proven. 321 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 05:26:29,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070364232] [2020-10-13 05:26:29,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:29,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 05:26:29,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337662858] [2020-10-13 05:26:29,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 05:26:29,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:29,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 05:26:29,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:26:29,655 INFO L87 Difference]: Start difference. First operand 291 states and 317 transitions. Second operand 25 states. [2020-10-13 05:26:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:33,309 INFO L93 Difference]: Finished difference Result 351 states and 388 transitions. [2020-10-13 05:26:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-13 05:26:33,309 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 136 [2020-10-13 05:26:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:33,311 INFO L225 Difference]: With dead ends: 351 [2020-10-13 05:26:33,311 INFO L226 Difference]: Without dead ends: 349 [2020-10-13 05:26:33,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=362, Invalid=4330, Unknown=0, NotChecked=0, Total=4692 [2020-10-13 05:26:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-13 05:26:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 300. [2020-10-13 05:26:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-13 05:26:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 327 transitions. [2020-10-13 05:26:33,356 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 327 transitions. Word has length 136 [2020-10-13 05:26:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:33,357 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 327 transitions. [2020-10-13 05:26:33,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 05:26:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 327 transitions. [2020-10-13 05:26:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 05:26:33,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:33,358 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:33,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 05:26:33,359 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:33,359 INFO L82 PathProgramCache]: Analyzing trace with hash -504524414, now seen corresponding path program 16 times [2020-10-13 05:26:33,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:33,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116023798] [2020-10-13 05:26:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:33,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:33,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 05:26:33,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-13 05:26:33,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:26:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 05:26:33,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:34,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:34,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:34,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:34,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:34,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:26:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:26:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:26:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:26:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:26:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:26:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:26:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 05:26:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:26:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 05:26:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-13 05:26:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:34,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:34,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:34,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:34,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:34,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:34,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 33 proven. 363 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 05:26:34,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116023798] [2020-10-13 05:26:34,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:34,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:26:34,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968184489] [2020-10-13 05:26:34,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:26:34,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:34,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:26:34,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:26:34,395 INFO L87 Difference]: Start difference. First operand 300 states and 327 transitions. Second operand 23 states. [2020-10-13 05:26:37,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:37,838 INFO L93 Difference]: Finished difference Result 374 states and 414 transitions. [2020-10-13 05:26:37,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-13 05:26:37,840 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 145 [2020-10-13 05:26:37,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:37,842 INFO L225 Difference]: With dead ends: 374 [2020-10-13 05:26:37,842 INFO L226 Difference]: Without dead ends: 358 [2020-10-13 05:26:37,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=406, Invalid=5144, Unknown=0, NotChecked=0, Total=5550 [2020-10-13 05:26:37,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-13 05:26:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 305. [2020-10-13 05:26:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-13 05:26:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 333 transitions. [2020-10-13 05:26:37,895 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 333 transitions. Word has length 145 [2020-10-13 05:26:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:37,896 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 333 transitions. [2020-10-13 05:26:37,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:26:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 333 transitions. [2020-10-13 05:26:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 05:26:37,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:37,898 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:37,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 05:26:37,899 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:37,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2147209192, now seen corresponding path program 8 times [2020-10-13 05:26:37,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:37,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033766768] [2020-10-13 05:26:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:38,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:38,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 05:26:38,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-13 05:26:38,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:26:38,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:38,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-13 05:26:38,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:39,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:26:39,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:26:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:26:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:26:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:39,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:26:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:39,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:26:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:26:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:26:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 05:26:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:26:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 05:26:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-13 05:26:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:39,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:39,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:39,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:39,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 22 proven. 374 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 05:26:39,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033766768] [2020-10-13 05:26:39,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:39,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 05:26:39,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305049995] [2020-10-13 05:26:39,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 05:26:39,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:39,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 05:26:39,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:26:39,121 INFO L87 Difference]: Start difference. First operand 305 states and 333 transitions. Second operand 25 states. [2020-10-13 05:26:43,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:43,575 INFO L93 Difference]: Finished difference Result 370 states and 410 transitions. [2020-10-13 05:26:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-13 05:26:43,577 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 145 [2020-10-13 05:26:43,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:43,579 INFO L225 Difference]: With dead ends: 370 [2020-10-13 05:26:43,579 INFO L226 Difference]: Without dead ends: 368 [2020-10-13 05:26:43,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=397, Invalid=5303, Unknown=0, NotChecked=0, Total=5700 [2020-10-13 05:26:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-13 05:26:43,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 319. [2020-10-13 05:26:43,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 05:26:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 349 transitions. [2020-10-13 05:26:43,640 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 349 transitions. Word has length 145 [2020-10-13 05:26:43,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:43,640 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 349 transitions. [2020-10-13 05:26:43,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 05:26:43,641 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 349 transitions. [2020-10-13 05:26:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 05:26:43,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:43,642 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:43,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 05:26:43,643 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:43,643 INFO L82 PathProgramCache]: Analyzing trace with hash -968192907, now seen corresponding path program 17 times [2020-10-13 05:26:43,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:43,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754331836] [2020-10-13 05:26:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:44,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:44,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 05:26:44,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:26:44,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-13 05:26:44,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:44,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 05:26:44,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:26:44,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 05:26:44,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:45,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:45,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:26:45,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:26:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:26:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:26:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:45,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:26:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:26:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:45,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:26:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:45,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:26:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:45,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:26:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:45,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:26:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:45,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 05:26:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:45,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 05:26:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:45,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:45,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:45,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:45,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:45,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:45,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:45,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:45,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 05:26:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:45,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:46,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:46,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:46,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:46,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:46,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:46,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:46,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-13 05:26:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:46,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:46,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:46,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:46,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:46,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 05:26:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:46,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:46,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:46,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:46,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:46,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 390 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 05:26:46,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754331836] [2020-10-13 05:26:46,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:46,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 05:26:46,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101349811] [2020-10-13 05:26:46,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 05:26:46,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:46,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 05:26:46,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:26:46,050 INFO L87 Difference]: Start difference. First operand 319 states and 349 transitions. Second operand 27 states. [2020-10-13 05:26:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:47,889 INFO L93 Difference]: Finished difference Result 583 states and 641 transitions. [2020-10-13 05:26:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 05:26:47,890 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 154 [2020-10-13 05:26:47,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:47,892 INFO L225 Difference]: With dead ends: 583 [2020-10-13 05:26:47,892 INFO L226 Difference]: Without dead ends: 340 [2020-10-13 05:26:47,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=493, Invalid=2263, Unknown=0, NotChecked=0, Total=2756 [2020-10-13 05:26:47,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-13 05:26:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 331. [2020-10-13 05:26:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-13 05:26:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 361 transitions. [2020-10-13 05:26:47,946 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 361 transitions. Word has length 154 [2020-10-13 05:26:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:47,946 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 361 transitions. [2020-10-13 05:26:47,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 05:26:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 361 transitions. [2020-10-13 05:26:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 05:26:47,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:47,949 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:47,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 05:26:47,949 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:47,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:47,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1452409636, now seen corresponding path program 18 times [2020-10-13 05:26:47,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:47,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350536533] [2020-10-13 05:26:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:48,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 05:26:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-13 05:26:48,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:26:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 05:26:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:49,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:49,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:49,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:26:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:26:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:26:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:26:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:26:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:26:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:26:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 05:26:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:26:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 05:26:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 05:26:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 05:26:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:49,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:49,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:49,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:49,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:49,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 36 proven. 445 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 05:26:49,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350536533] [2020-10-13 05:26:49,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:49,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 05:26:49,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292799526] [2020-10-13 05:26:49,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 05:26:49,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:49,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 05:26:49,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:26:49,312 INFO L87 Difference]: Start difference. First operand 331 states and 361 transitions. Second operand 26 states. [2020-10-13 05:26:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:53,969 INFO L93 Difference]: Finished difference Result 414 states and 461 transitions. [2020-10-13 05:26:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-13 05:26:53,970 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 158 [2020-10-13 05:26:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:53,973 INFO L225 Difference]: With dead ends: 414 [2020-10-13 05:26:53,973 INFO L226 Difference]: Without dead ends: 398 [2020-10-13 05:26:53,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1845 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=514, Invalid=6796, Unknown=0, NotChecked=0, Total=7310 [2020-10-13 05:26:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-13 05:26:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 342. [2020-10-13 05:26:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-13 05:26:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 376 transitions. [2020-10-13 05:26:54,022 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 376 transitions. Word has length 158 [2020-10-13 05:26:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:54,023 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 376 transitions. [2020-10-13 05:26:54,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 05:26:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 376 transitions. [2020-10-13 05:26:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 05:26:54,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:54,025 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 11, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:54,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 05:26:54,025 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2102591452, now seen corresponding path program 11 times [2020-10-13 05:26:54,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:54,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980775250] [2020-10-13 05:26:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:54,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:54,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:54,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:54,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 05:26:59,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 05:26:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 05:26:59,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 05:26:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 05:26:59,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:59,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:59,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:59,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:26:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:26:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:26:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:59,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:26:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:26:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:26:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:59,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:26:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:26:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:26:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 05:26:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:26:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 05:26:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 05:26:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:59,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:59,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 05:26:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:59,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:59,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:59,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:59,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:59,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:26:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:59,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 98 proven. 413 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-10-13 05:26:59,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980775250] [2020-10-13 05:26:59,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:59,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 05:26:59,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626942002] [2020-10-13 05:26:59,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 05:26:59,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:59,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 05:26:59,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=752, Unknown=0, NotChecked=0, Total=812 [2020-10-13 05:26:59,931 INFO L87 Difference]: Start difference. First operand 342 states and 376 transitions. Second operand 29 states. [2020-10-13 05:27:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:02,849 INFO L93 Difference]: Finished difference Result 371 states and 410 transitions. [2020-10-13 05:27:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 05:27:02,850 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 158 [2020-10-13 05:27:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:02,853 INFO L225 Difference]: With dead ends: 371 [2020-10-13 05:27:02,853 INFO L226 Difference]: Without dead ends: 355 [2020-10-13 05:27:02,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=174, Invalid=2082, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 05:27:02,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-13 05:27:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 342. [2020-10-13 05:27:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-13 05:27:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 375 transitions. [2020-10-13 05:27:02,897 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 375 transitions. Word has length 158 [2020-10-13 05:27:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:02,898 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 375 transitions. [2020-10-13 05:27:02,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 05:27:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 375 transitions. [2020-10-13 05:27:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 05:27:02,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:02,900 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:02,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 05:27:02,900 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1091474202, now seen corresponding path program 12 times [2020-10-13 05:27:02,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:02,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488347164] [2020-10-13 05:27:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:04,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 05:27:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 05:27:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 05:27:07,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 05:27:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:27:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 05:27:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:08,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:27:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:08,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:27:08,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:27:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:08,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:27:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:08,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:27:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:27:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:08,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:27:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:08,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:08,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:27:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 05:27:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:27:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 05:27:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:08,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:08,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 05:27:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:08,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:27:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 05:27:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:08,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:08,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:08,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:08,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:27:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:08,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 138 proven. 367 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-13 05:27:08,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488347164] [2020-10-13 05:27:08,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:08,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 05:27:08,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324339153] [2020-10-13 05:27:08,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 05:27:08,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:08,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 05:27:08,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:27:08,823 INFO L87 Difference]: Start difference. First operand 342 states and 375 transitions. Second operand 28 states. [2020-10-13 05:27:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:12,298 INFO L93 Difference]: Finished difference Result 373 states and 410 transitions. [2020-10-13 05:27:12,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 05:27:12,299 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 158 [2020-10-13 05:27:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:12,301 INFO L225 Difference]: With dead ends: 373 [2020-10-13 05:27:12,301 INFO L226 Difference]: Without dead ends: 347 [2020-10-13 05:27:12,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=221, Invalid=2859, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 05:27:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-13 05:27:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 341. [2020-10-13 05:27:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-13 05:27:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 372 transitions. [2020-10-13 05:27:12,357 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 372 transitions. Word has length 158 [2020-10-13 05:27:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:12,358 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 372 transitions. [2020-10-13 05:27:12,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 05:27:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 372 transitions. [2020-10-13 05:27:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 05:27:12,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:12,360 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:12,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 05:27:12,360 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:12,360 INFO L82 PathProgramCache]: Analyzing trace with hash -713964132, now seen corresponding path program 6 times [2020-10-13 05:27:12,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:12,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938898188] [2020-10-13 05:27:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 05:27:13,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-13 05:27:13,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 05:27:13,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:27:13,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-13 05:27:13,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:13,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:27:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:13,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:27:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:27:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:27:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:27:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:27:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:27:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 05:27:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:27:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 05:27:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 05:27:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 05:27:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:13,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:13,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:13,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:13,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 24 proven. 457 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 05:27:14,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938898188] [2020-10-13 05:27:14,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:14,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 05:27:14,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558286904] [2020-10-13 05:27:14,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 05:27:14,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:14,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 05:27:14,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=700, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:27:14,006 INFO L87 Difference]: Start difference. First operand 341 states and 372 transitions. Second operand 28 states. [2020-10-13 05:27:19,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:19,114 INFO L93 Difference]: Finished difference Result 406 states and 449 transitions. [2020-10-13 05:27:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-13 05:27:19,115 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 158 [2020-10-13 05:27:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:19,117 INFO L225 Difference]: With dead ends: 406 [2020-10-13 05:27:19,117 INFO L226 Difference]: Without dead ends: 404 [2020-10-13 05:27:19,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=447, Invalid=5873, Unknown=0, NotChecked=0, Total=6320 [2020-10-13 05:27:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-13 05:27:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 350. [2020-10-13 05:27:19,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-13 05:27:19,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 382 transitions. [2020-10-13 05:27:19,176 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 382 transitions. Word has length 158 [2020-10-13 05:27:19,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:19,177 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 382 transitions. [2020-10-13 05:27:19,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 05:27:19,177 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 382 transitions. [2020-10-13 05:27:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 05:27:19,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:19,178 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:19,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 05:27:19,179 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:19,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:19,179 INFO L82 PathProgramCache]: Analyzing trace with hash 48514651, now seen corresponding path program 19 times [2020-10-13 05:27:19,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:19,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990743737] [2020-10-13 05:27:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 05:27:20,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-13 05:27:20,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:27:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:27:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 05:27:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:20,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:20,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:27:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:27:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:27:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:27:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:27:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:27:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:27:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 05:27:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:27:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 05:27:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:20,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 05:27:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 05:27:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 05:27:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:20,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:20,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:20,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:20,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:20,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:20,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:20,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:20,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 39 proven. 507 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-13 05:27:20,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990743737] [2020-10-13 05:27:20,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:20,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 05:27:20,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770805109] [2020-10-13 05:27:20,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 05:27:20,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:20,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 05:27:20,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:27:20,783 INFO L87 Difference]: Start difference. First operand 350 states and 382 transitions. Second operand 26 states. [2020-10-13 05:27:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:25,881 INFO L93 Difference]: Finished difference Result 431 states and 478 transitions. [2020-10-13 05:27:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-13 05:27:25,882 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 167 [2020-10-13 05:27:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:25,885 INFO L225 Difference]: With dead ends: 431 [2020-10-13 05:27:25,885 INFO L226 Difference]: Without dead ends: 415 [2020-10-13 05:27:25,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=503, Invalid=7153, Unknown=0, NotChecked=0, Total=7656 [2020-10-13 05:27:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-13 05:27:25,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 355. [2020-10-13 05:27:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-13 05:27:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 388 transitions. [2020-10-13 05:27:25,935 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 388 transitions. Word has length 167 [2020-10-13 05:27:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:25,935 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 388 transitions. [2020-10-13 05:27:25,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 05:27:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 388 transitions. [2020-10-13 05:27:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 05:27:25,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:25,936 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:25,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 05:27:25,937 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:25,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:25,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2015511053, now seen corresponding path program 9 times [2020-10-13 05:27:25,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:25,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268199580] [2020-10-13 05:27:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:25,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:30,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:30,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:30,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 05:27:30,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:27:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 05:27:30,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 05:27:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:27:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 05:27:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:31,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:31,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:27:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:27:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:27:31,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:27:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:27:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:27:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:27:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:27:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:27:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 05:27:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:27:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 05:27:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 05:27:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:31,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 05:27:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:27:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 05:27:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:31,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:31,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:31,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:31,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:27:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:31,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 154 proven. 419 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2020-10-13 05:27:31,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268199580] [2020-10-13 05:27:31,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:31,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 05:27:31,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400857845] [2020-10-13 05:27:31,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 05:27:31,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:31,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 05:27:31,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=752, Unknown=0, NotChecked=0, Total=812 [2020-10-13 05:27:31,887 INFO L87 Difference]: Start difference. First operand 355 states and 388 transitions. Second operand 29 states. [2020-10-13 05:27:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:35,122 INFO L93 Difference]: Finished difference Result 386 states and 424 transitions. [2020-10-13 05:27:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 05:27:35,124 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 167 [2020-10-13 05:27:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:35,127 INFO L225 Difference]: With dead ends: 386 [2020-10-13 05:27:35,127 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 05:27:35,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=174, Invalid=2082, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 05:27:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 05:27:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 355. [2020-10-13 05:27:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-13 05:27:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 387 transitions. [2020-10-13 05:27:35,168 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 387 transitions. Word has length 167 [2020-10-13 05:27:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:35,168 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 387 transitions. [2020-10-13 05:27:35,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 05:27:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 387 transitions. [2020-10-13 05:27:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 05:27:35,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:35,169 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:35,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 05:27:35,170 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:35,170 INFO L82 PathProgramCache]: Analyzing trace with hash 474017909, now seen corresponding path program 10 times [2020-10-13 05:27:35,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:35,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921671267] [2020-10-13 05:27:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:35,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:35,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 05:27:35,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:35,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-10-13 05:27:35,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 05:27:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:27:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 05:27:35,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:36,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:36,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:27:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:36,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:36,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:36,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:27:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:27:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:27:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:27:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:27:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:27:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 05:27:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:27:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 05:27:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 05:27:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 05:27:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 05:27:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:36,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:36,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:36,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:36,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 26 proven. 520 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-13 05:27:36,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921671267] [2020-10-13 05:27:36,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:36,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 05:27:36,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780252181] [2020-10-13 05:27:36,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 05:27:36,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:36,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 05:27:36,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:27:36,769 INFO L87 Difference]: Start difference. First operand 355 states and 387 transitions. Second operand 28 states. [2020-10-13 05:27:43,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:43,275 INFO L93 Difference]: Finished difference Result 425 states and 470 transitions. [2020-10-13 05:27:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-13 05:27:43,277 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 167 [2020-10-13 05:27:43,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:43,279 INFO L225 Difference]: With dead ends: 425 [2020-10-13 05:27:43,279 INFO L226 Difference]: Without dead ends: 423 [2020-10-13 05:27:43,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=483, Invalid=6999, Unknown=0, NotChecked=0, Total=7482 [2020-10-13 05:27:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-13 05:27:43,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 369. [2020-10-13 05:27:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-13 05:27:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 403 transitions. [2020-10-13 05:27:43,341 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 403 transitions. Word has length 167 [2020-10-13 05:27:43,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:43,342 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 403 transitions. [2020-10-13 05:27:43,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 05:27:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 403 transitions. [2020-10-13 05:27:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 05:27:43,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:43,344 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:43,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 05:27:43,344 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash 266288060, now seen corresponding path program 20 times [2020-10-13 05:27:43,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:43,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175957778] [2020-10-13 05:27:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:43,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:43,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:44,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 05:27:44,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:27:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-10-13 05:27:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 05:27:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:27:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-13 05:27:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:45,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:45,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:27:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:27:45,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:27:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:27:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:27:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:27:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:27:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:27:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:45,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:27:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:45,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:27:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:27:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 05:27:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 05:27:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 05:27:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 05:27:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 05:27:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 05:27:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 05:27:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:45,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:45,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 525 proven. 91 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-13 05:27:45,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175957778] [2020-10-13 05:27:45,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:45,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 05:27:45,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554005880] [2020-10-13 05:27:45,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 05:27:45,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:45,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 05:27:45,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-10-13 05:27:45,978 INFO L87 Difference]: Start difference. First operand 369 states and 403 transitions. Second operand 30 states. [2020-10-13 05:27:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:49,322 INFO L93 Difference]: Finished difference Result 671 states and 737 transitions. [2020-10-13 05:27:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 05:27:49,323 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 176 [2020-10-13 05:27:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:49,325 INFO L225 Difference]: With dead ends: 671 [2020-10-13 05:27:49,325 INFO L226 Difference]: Without dead ends: 390 [2020-10-13 05:27:49,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=613, Invalid=2809, Unknown=0, NotChecked=0, Total=3422 [2020-10-13 05:27:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-13 05:27:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 381. [2020-10-13 05:27:49,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-13 05:27:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 415 transitions. [2020-10-13 05:27:49,378 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 415 transitions. Word has length 176 [2020-10-13 05:27:49,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:27:49,379 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 415 transitions. [2020-10-13 05:27:49,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 05:27:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 415 transitions. [2020-10-13 05:27:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 05:27:49,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:27:49,380 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:27:49,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 05:27:49,380 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:27:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:27:49,381 INFO L82 PathProgramCache]: Analyzing trace with hash 868439267, now seen corresponding path program 21 times [2020-10-13 05:27:49,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:27:49,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621532295] [2020-10-13 05:27:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:27:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:50,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:50,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 05:27:50,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:50,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-13 05:27:50,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:50,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 05:27:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:27:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 05:27:50,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:27:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:27:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:51,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:27:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:27:51,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:27:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:27:51,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:27:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 05:27:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 05:27:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 05:27:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:27:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 05:27:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 05:27:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 05:27:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 05:27:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 05:27:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 05:27:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 05:27:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-13 05:27:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 05:27:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:27:51,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:27:51,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:27:51,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:27:51,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:27:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:27:51,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:27:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:27:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:27:51,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:27:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:27:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 42 proven. 603 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-13 05:27:51,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621532295] [2020-10-13 05:27:51,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:27:51,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 05:27:51,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263614455] [2020-10-13 05:27:51,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 05:27:51,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:27:51,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 05:27:51,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=753, Unknown=0, NotChecked=0, Total=812 [2020-10-13 05:27:51,177 INFO L87 Difference]: Start difference. First operand 381 states and 415 transitions. Second operand 29 states. [2020-10-13 05:27:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:27:58,495 INFO L93 Difference]: Finished difference Result 469 states and 521 transitions. [2020-10-13 05:27:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-13 05:27:58,497 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 180 [2020-10-13 05:27:58,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:27:58,500 INFO L225 Difference]: With dead ends: 469 [2020-10-13 05:27:58,500 INFO L226 Difference]: Without dead ends: 453 [2020-10-13 05:27:58,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2405 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=622, Invalid=8690, Unknown=0, NotChecked=0, Total=9312 [2020-10-13 05:27:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states.