/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/eca-rers2012/Problem03_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:25:16,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:25:16,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:25:16,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:25:16,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:25:16,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:25:16,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:25:16,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:25:16,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:25:16,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:25:16,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:25:16,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:25:16,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:25:16,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:25:16,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:25:16,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:25:16,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:25:16,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:25:16,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:25:16,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:25:16,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:25:16,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:25:16,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:25:16,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:25:16,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:25:16,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:25:16,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:25:16,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:25:16,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:25:16,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:25:16,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:25:16,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:25:16,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:25:16,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:25:16,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:25:16,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:25:16,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:25:16,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:25:16,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:25:16,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:25:16,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:25:16,790 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 06:25:16,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:25:16,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:25:16,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:25:16,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:25:16,814 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:25:16,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:25:16,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:25:16,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:25:16,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:25:16,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:25:16,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:25:16,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:25:16,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:25:16,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:25:16,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:25:16,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:25:16,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:25:16,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:25:16,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:25:16,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:25:16,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:25:16,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:25:16,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:25:16,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:25:16,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:25:16,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:25:16,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:25:16,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:25:16,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:25:16,819 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 06:25:17,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:25:17,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:25:17,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:25:17,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:25:17,147 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:25:17,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label47.c [2020-10-13 06:25:17,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/183034989/9116654b241643e881ba44822059c4d1/FLAGa10fdd2bb [2020-10-13 06:25:17,825 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:25:17,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label47.c [2020-10-13 06:25:17,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/183034989/9116654b241643e881ba44822059c4d1/FLAGa10fdd2bb [2020-10-13 06:25:18,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/183034989/9116654b241643e881ba44822059c4d1 [2020-10-13 06:25:18,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:25:18,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:25:18,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:18,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:25:18,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:25:18,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:18" (1/1) ... [2020-10-13 06:25:18,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263e4b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18, skipping insertion in model container [2020-10-13 06:25:18,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:18" (1/1) ... [2020-10-13 06:25:18,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:25:18,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:25:19,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:19,161 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:25:19,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:19,425 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:25:19,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19 WrapperNode [2020-10-13 06:25:19,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:19,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:25:19,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:25:19,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:25:19,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19" (1/1) ... [2020-10-13 06:25:19,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19" (1/1) ... [2020-10-13 06:25:19,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19" (1/1) ... [2020-10-13 06:25:19,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19" (1/1) ... [2020-10-13 06:25:19,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19" (1/1) ... [2020-10-13 06:25:19,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19" (1/1) ... [2020-10-13 06:25:19,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19" (1/1) ... [2020-10-13 06:25:19,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:25:19,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:25:19,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:25:19,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:25:19,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19" (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 06:25:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:25:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:25:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:25:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:25:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:25:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:25:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:25:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:25:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:25:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:25:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:25:21,642 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:25:21,642 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:25:21,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:21 BoogieIcfgContainer [2020-10-13 06:25:21,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:25:21,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:25:21,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:25:21,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:25:21,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:25:18" (1/3) ... [2020-10-13 06:25:21,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a755e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:21, skipping insertion in model container [2020-10-13 06:25:21,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:19" (2/3) ... [2020-10-13 06:25:21,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a755e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:21, skipping insertion in model container [2020-10-13 06:25:21,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:21" (3/3) ... [2020-10-13 06:25:21,659 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label47.c [2020-10-13 06:25:21,670 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:25:21,678 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:25:21,693 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:25:21,720 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:25:21,720 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:25:21,720 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:25:21,721 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:25:21,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:25:21,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:25:21,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:25:21,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:25:21,747 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:25:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-13 06:25:21,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:21,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:21,766 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:21,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:21,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1119319184, now seen corresponding path program 1 times [2020-10-13 06:25:21,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:21,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669425957] [2020-10-13 06:25:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:22,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:26,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:26,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 06:25:26,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:26,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3862 [2020-10-13 06:25:26,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:25:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:25:26,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:25:26,918 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 63 [2020-10-13 06:25:27,755 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:27,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:27,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:25:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:28,424 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 06:25:28,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669425957] [2020-10-13 06:25:28,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:25:28,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 06:25:28,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331505280] [2020-10-13 06:25:28,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 06:25:28,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:28,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 06:25:28,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:25:28,449 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 14 states. [2020-10-13 06:25:28,873 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:25:29,501 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 166 [2020-10-13 06:25:30,116 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 166 [2020-10-13 06:25:30,853 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 174 [2020-10-13 06:25:31,549 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 173 [2020-10-13 06:25:32,466 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 172 [2020-10-13 06:25:33,431 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 171 [2020-10-13 06:25:36,027 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 170 [2020-10-13 06:25:36,761 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 168 [2020-10-13 06:25:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:38,850 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:25:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:25:38,852 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 203 [2020-10-13 06:25:38,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:38,870 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:25:38,870 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:25:38,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-10-13 06:25:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:25:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:25:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:25:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:25:38,957 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 203 [2020-10-13 06:25:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:38,958 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:25:38,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 06:25:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:25:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-13 06:25:38,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:38,964 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:38,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:25:38,965 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:38,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1629969737, now seen corresponding path program 1 times [2020-10-13 06:25:38,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:38,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610588698] [2020-10-13 06:25:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:43,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:43,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 06:25:43,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4369 [2020-10-13 06:25:43,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:25:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:25:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:44,435 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-13 06:25:44,758 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-13 06:25:45,032 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-13 06:25:45,212 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-13 06:25:45,367 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-13 06:25:45,501 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-13 06:25:45,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:45,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:45,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:45,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:45,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:25:45,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:45,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:25:45,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:45,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:45,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:45,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:25:45,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:25:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:25:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:46,175 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-13 06:25:46,446 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-10-13 06:25:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:47,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610588698] [2020-10-13 06:25:47,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:47,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:25:47,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37274672] [2020-10-13 06:25:47,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:25:47,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:47,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:25:47,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:25:47,048 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:25:47,302 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 06:25:47,777 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 80 [2020-10-13 06:25:48,011 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 61 [2020-10-13 06:25:48,305 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 86 [2020-10-13 06:25:48,919 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 180 [2020-10-13 06:25:49,575 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 200 [2020-10-13 06:25:50,662 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 197 [2020-10-13 06:25:52,685 WARN L193 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 194 [2020-10-13 06:25:55,326 WARN L193 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 191 [2020-10-13 06:25:58,755 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 188 [2020-10-13 06:25:59,588 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 183 [2020-10-13 06:26:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:03,011 INFO L93 Difference]: Finished difference Result 982 states and 1589 transitions. [2020-10-13 06:26:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 06:26:03,015 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2020-10-13 06:26:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:03,022 INFO L225 Difference]: With dead ends: 982 [2020-10-13 06:26:03,022 INFO L226 Difference]: Without dead ends: 739 [2020-10-13 06:26:03,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:26:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-10-13 06:26:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 731. [2020-10-13 06:26:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-13 06:26:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 985 transitions. [2020-10-13 06:26:03,090 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 985 transitions. Word has length 214 [2020-10-13 06:26:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:03,091 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 985 transitions. [2020-10-13 06:26:03,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:26:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 985 transitions. [2020-10-13 06:26:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 06:26:03,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:03,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:03,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:26:03,097 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1890456299, now seen corresponding path program 1 times [2020-10-13 06:26:03,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:03,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614926040] [2020-10-13 06:26:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:04,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-13 06:26:04,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:04,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-13 06:26:04,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:26:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:04,766 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:04,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:04,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:26:04,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:04,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:04,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:04,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:04,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:04,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:26:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:05,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614926040] [2020-10-13 06:26:05,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:05,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:05,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893541026] [2020-10-13 06:26:05,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:05,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:05,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:05,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:05,246 INFO L87 Difference]: Start difference. First operand 731 states and 985 transitions. Second operand 5 states. [2020-10-13 06:26:05,527 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:26:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:07,801 INFO L93 Difference]: Finished difference Result 1161 states and 1714 transitions. [2020-10-13 06:26:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:07,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-13 06:26:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:07,807 INFO L225 Difference]: With dead ends: 1161 [2020-10-13 06:26:07,807 INFO L226 Difference]: Without dead ends: 723 [2020-10-13 06:26:07,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-10-13 06:26:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 719. [2020-10-13 06:26:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-13 06:26:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 926 transitions. [2020-10-13 06:26:07,837 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 926 transitions. Word has length 224 [2020-10-13 06:26:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:07,837 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 926 transitions. [2020-10-13 06:26:07,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 926 transitions. [2020-10-13 06:26:07,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-13 06:26:07,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:07,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:07,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:26:07,843 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:07,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:07,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1955826553, now seen corresponding path program 1 times [2020-10-13 06:26:07,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:07,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137903233] [2020-10-13 06:26:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:10,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:10,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 06:26:10,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:10,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2720 [2020-10-13 06:26:10,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:26:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 06:26:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:11,236 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 34 [2020-10-13 06:26:11,400 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:11,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:11,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:11,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:26:11,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:11,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:11,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:11,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:11,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:26:11,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 06:26:11,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:11,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:11,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:26:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:12,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137903233] [2020-10-13 06:26:12,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:12,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:26:12,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907751973] [2020-10-13 06:26:12,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:26:12,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:12,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:26:12,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:12,326 INFO L87 Difference]: Start difference. First operand 719 states and 926 transitions. Second operand 6 states. [2020-10-13 06:26:12,710 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 06:26:13,148 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-13 06:26:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:15,848 INFO L93 Difference]: Finished difference Result 1340 states and 1915 transitions. [2020-10-13 06:26:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:26:15,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2020-10-13 06:26:15,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:15,857 INFO L225 Difference]: With dead ends: 1340 [2020-10-13 06:26:15,857 INFO L226 Difference]: Without dead ends: 1004 [2020-10-13 06:26:15,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:26:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-13 06:26:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 916. [2020-10-13 06:26:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2020-10-13 06:26:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1136 transitions. [2020-10-13 06:26:15,894 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1136 transitions. Word has length 238 [2020-10-13 06:26:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:15,894 INFO L479 AbstractCegarLoop]: Abstraction has 916 states and 1136 transitions. [2020-10-13 06:26:15,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:26:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1136 transitions. [2020-10-13 06:26:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 06:26:15,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:15,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:15,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:26:15,900 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:15,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:15,901 INFO L82 PathProgramCache]: Analyzing trace with hash 124644504, now seen corresponding path program 1 times [2020-10-13 06:26:15,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:15,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900362251] [2020-10-13 06:26:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:18,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:19,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:20,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 06:26:20,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:26:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 06:26:20,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 06:26:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:26:21,151 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:21,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:21,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:21,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:21,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:26:21,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:21,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:21,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:21,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:21,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:21,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 06:26:21,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:21,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:21,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 06:26:21,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:26:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:21,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:21,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:26:21,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:26:21,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:26:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:21,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900362251] [2020-10-13 06:26:21,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:21,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:21,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227611893] [2020-10-13 06:26:21,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:21,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:21,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:21,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:21,611 INFO L87 Difference]: Start difference. First operand 916 states and 1136 transitions. Second operand 7 states. [2020-10-13 06:26:22,052 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:22,685 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:26,122 INFO L93 Difference]: Finished difference Result 2658 states and 3626 transitions. [2020-10-13 06:26:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:26,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-13 06:26:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:26,134 INFO L225 Difference]: With dead ends: 2658 [2020-10-13 06:26:26,135 INFO L226 Difference]: Without dead ends: 1851 [2020-10-13 06:26:26,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-10-13 06:26:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1828. [2020-10-13 06:26:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-10-13 06:26:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2372 transitions. [2020-10-13 06:26:26,208 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2372 transitions. Word has length 248 [2020-10-13 06:26:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:26,209 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 2372 transitions. [2020-10-13 06:26:26,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2372 transitions. [2020-10-13 06:26:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-13 06:26:26,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:26,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:26,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:26:26,221 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:26,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1712265559, now seen corresponding path program 1 times [2020-10-13 06:26:26,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:26,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631216872] [2020-10-13 06:26:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:28,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:31,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:31,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 06:26:31,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:26:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 06:26:31,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 06:26:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:31,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:31,482 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:31,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:31,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:31,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:31,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:26:31,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:31,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:31,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:26:31,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:31,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:26:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:31,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:26:31,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:26:31,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 06:26:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 06:26:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:31,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:31,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:31,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:31,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 06:26:31,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:31,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 06:26:31,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631216872] [2020-10-13 06:26:31,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:31,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:31,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574936883] [2020-10-13 06:26:31,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:31,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:31,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:31,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:31,921 INFO L87 Difference]: Start difference. First operand 1828 states and 2372 transitions. Second operand 7 states. [2020-10-13 06:26:32,058 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:32,792 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:34,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:34,862 INFO L93 Difference]: Finished difference Result 5152 states and 7268 transitions. [2020-10-13 06:26:34,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:34,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-13 06:26:34,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:34,890 INFO L225 Difference]: With dead ends: 5152 [2020-10-13 06:26:34,891 INFO L226 Difference]: Without dead ends: 3433 [2020-10-13 06:26:34,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2020-10-13 06:26:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 3231. [2020-10-13 06:26:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3231 states. [2020-10-13 06:26:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 4326 transitions. [2020-10-13 06:26:35,030 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 4326 transitions. Word has length 273 [2020-10-13 06:26:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:35,030 INFO L479 AbstractCegarLoop]: Abstraction has 3231 states and 4326 transitions. [2020-10-13 06:26:35,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 4326 transitions. [2020-10-13 06:26:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 06:26:35,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:35,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:35,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:26:35,048 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash -640795489, now seen corresponding path program 1 times [2020-10-13 06:26:35,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:35,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778362873] [2020-10-13 06:26:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:37,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:37,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 06:26:37,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:37,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2736 [2020-10-13 06:26:37,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:26:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:26:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:26:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:38,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:38,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:38,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:38,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:26:38,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:26:38,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:38,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:38,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:38,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:38,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 06:26:38,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:26:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:38,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:26:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:38,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:38,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:38,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:26:38,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:26:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:38,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 71 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:26:38,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778362873] [2020-10-13 06:26:38,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:38,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:38,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762754263] [2020-10-13 06:26:38,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:38,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:38,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:38,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:38,339 INFO L87 Difference]: Start difference. First operand 3231 states and 4326 transitions. Second operand 7 states. [2020-10-13 06:26:38,488 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:26:39,100 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:26:41,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:41,429 INFO L93 Difference]: Finished difference Result 8145 states and 10957 transitions. [2020-10-13 06:26:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:41,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-13 06:26:41,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:41,459 INFO L225 Difference]: With dead ends: 8145 [2020-10-13 06:26:41,460 INFO L226 Difference]: Without dead ends: 5035 [2020-10-13 06:26:41,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5035 states. [2020-10-13 06:26:41,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5035 to 4761. [2020-10-13 06:26:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4761 states. [2020-10-13 06:26:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4761 states to 4761 states and 6149 transitions. [2020-10-13 06:26:41,630 INFO L78 Accepts]: Start accepts. Automaton has 4761 states and 6149 transitions. Word has length 280 [2020-10-13 06:26:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:41,631 INFO L479 AbstractCegarLoop]: Abstraction has 4761 states and 6149 transitions. [2020-10-13 06:26:41,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4761 states and 6149 transitions. [2020-10-13 06:26:41,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-13 06:26:41,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:41,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:41,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:26:41,652 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:41,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:41,652 INFO L82 PathProgramCache]: Analyzing trace with hash 353984194, now seen corresponding path program 1 times [2020-10-13 06:26:41,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:41,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658028931] [2020-10-13 06:26:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-13 06:26:45,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:45,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3567 [2020-10-13 06:26:45,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:26:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-13 06:26:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:45,510 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:45,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:45,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:45,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:26:45,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:45,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:26:45,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:45,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 06:26:45,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:26:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:45,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658028931] [2020-10-13 06:26:45,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:45,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:45,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927060778] [2020-10-13 06:26:45,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:45,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:45,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:45,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:45,827 INFO L87 Difference]: Start difference. First operand 4761 states and 6149 transitions. Second operand 5 states. [2020-10-13 06:26:45,966 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:48,137 INFO L93 Difference]: Finished difference Result 13375 states and 17875 transitions. [2020-10-13 06:26:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:48,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-13 06:26:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:48,187 INFO L225 Difference]: With dead ends: 13375 [2020-10-13 06:26:48,187 INFO L226 Difference]: Without dead ends: 8743 [2020-10-13 06:26:48,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:48,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8743 states. [2020-10-13 06:26:48,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8743 to 7845. [2020-10-13 06:26:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7845 states. [2020-10-13 06:26:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7845 states to 7845 states and 10829 transitions. [2020-10-13 06:26:48,538 INFO L78 Accepts]: Start accepts. Automaton has 7845 states and 10829 transitions. Word has length 303 [2020-10-13 06:26:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:48,540 INFO L479 AbstractCegarLoop]: Abstraction has 7845 states and 10829 transitions. [2020-10-13 06:26:48,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7845 states and 10829 transitions. [2020-10-13 06:26:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-13 06:26:48,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:48,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:48,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:26:48,575 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:48,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1093767093, now seen corresponding path program 1 times [2020-10-13 06:26:48,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:48,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966952306] [2020-10-13 06:26:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:52,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:53,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:53,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 06:26:53,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:26:53,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 06:26:53,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:26:53,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:26:53,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:53,838 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:53,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:53,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:53,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:53,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:53,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:53,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:53,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:53,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:53,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:54,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:54,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:26:54,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:26:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:26:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:54,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:26:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:54,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:26:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:26:54,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:26:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:54,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966952306] [2020-10-13 06:26:54,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:54,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:54,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648957341] [2020-10-13 06:26:54,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:54,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:54,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:54,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:54,218 INFO L87 Difference]: Start difference. First operand 7845 states and 10829 transitions. Second operand 7 states. [2020-10-13 06:26:54,362 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:26:55,356 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 06:26:57,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:57,598 INFO L93 Difference]: Finished difference Result 19137 states and 27428 transitions. [2020-10-13 06:26:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:57,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-13 06:26:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:57,851 INFO L225 Difference]: With dead ends: 19137 [2020-10-13 06:26:57,851 INFO L226 Difference]: Without dead ends: 11409 [2020-10-13 06:26:57,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11409 states. [2020-10-13 06:26:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11409 to 11333. [2020-10-13 06:26:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11333 states. [2020-10-13 06:26:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11333 states to 11333 states and 15524 transitions. [2020-10-13 06:26:58,271 INFO L78 Accepts]: Start accepts. Automaton has 11333 states and 15524 transitions. Word has length 313 [2020-10-13 06:26:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:58,272 INFO L479 AbstractCegarLoop]: Abstraction has 11333 states and 15524 transitions. [2020-10-13 06:26:58,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 11333 states and 15524 transitions. [2020-10-13 06:26:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 06:26:58,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:58,317 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:58,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:26:58,318 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:58,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:58,318 INFO L82 PathProgramCache]: Analyzing trace with hash -53478910, now seen corresponding path program 1 times [2020-10-13 06:26:58,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:58,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918269106] [2020-10-13 06:26:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:58,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:59,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-13 06:27:02,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4523 [2020-10-13 06:27:02,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:27:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:27:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:03,114 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:03,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:03,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:03,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:27:03,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:03,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 91 [2020-10-13 06:27:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:03,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:03,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:03,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 06:27:03,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:27:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:03,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 06:27:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:27:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:27:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:03,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918269106] [2020-10-13 06:27:03,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:03,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:03,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083543959] [2020-10-13 06:27:03,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:03,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:03,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:03,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:03,577 INFO L87 Difference]: Start difference. First operand 11333 states and 15524 transitions. Second operand 7 states. [2020-10-13 06:27:03,922 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:04,861 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:06,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:06,430 INFO L93 Difference]: Finished difference Result 22628 states and 32110 transitions. [2020-10-13 06:27:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:06,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-13 06:27:06,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:06,497 INFO L225 Difference]: With dead ends: 22628 [2020-10-13 06:27:06,498 INFO L226 Difference]: Without dead ends: 11412 [2020-10-13 06:27:06,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11412 states. [2020-10-13 06:27:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11412 to 11261. [2020-10-13 06:27:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11261 states. [2020-10-13 06:27:06,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11261 states to 11261 states and 14661 transitions. [2020-10-13 06:27:06,886 INFO L78 Accepts]: Start accepts. Automaton has 11261 states and 14661 transitions. Word has length 321 [2020-10-13 06:27:06,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:06,887 INFO L479 AbstractCegarLoop]: Abstraction has 11261 states and 14661 transitions. [2020-10-13 06:27:06,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:06,888 INFO L276 IsEmpty]: Start isEmpty. Operand 11261 states and 14661 transitions. [2020-10-13 06:27:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-13 06:27:06,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:06,935 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:06,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:27:06,936 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:06,936 INFO L82 PathProgramCache]: Analyzing trace with hash 223181434, now seen corresponding path program 1 times [2020-10-13 06:27:06,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:06,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109426296] [2020-10-13 06:27:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-13 06:27:12,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:27:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 06:27:12,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 06:27:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:12,309 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:12,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:27:12,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:12,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:12,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 06:27:12,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:27:12,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 06:27:12,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:27:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:12,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 06:27:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:12,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:27:12,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:27:12,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109426296] [2020-10-13 06:27:12,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:12,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:12,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656868479] [2020-10-13 06:27:12,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:12,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:12,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:12,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:12,867 INFO L87 Difference]: Start difference. First operand 11261 states and 14661 transitions. Second operand 7 states. [2020-10-13 06:27:13,005 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:14,152 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:15,815 INFO L93 Difference]: Finished difference Result 31326 states and 42254 transitions. [2020-10-13 06:27:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:15,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-13 06:27:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:15,901 INFO L225 Difference]: With dead ends: 31326 [2020-10-13 06:27:15,901 INFO L226 Difference]: Without dead ends: 20182 [2020-10-13 06:27:15,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20182 states. [2020-10-13 06:27:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20182 to 19413. [2020-10-13 06:27:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19413 states. [2020-10-13 06:27:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19413 states to 19413 states and 24677 transitions. [2020-10-13 06:27:16,469 INFO L78 Accepts]: Start accepts. Automaton has 19413 states and 24677 transitions. Word has length 330 [2020-10-13 06:27:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:16,469 INFO L479 AbstractCegarLoop]: Abstraction has 19413 states and 24677 transitions. [2020-10-13 06:27:16,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 19413 states and 24677 transitions. [2020-10-13 06:27:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 06:27:16,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:16,509 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:16,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:27:16,509 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:16,510 INFO L82 PathProgramCache]: Analyzing trace with hash -211996915, now seen corresponding path program 1 times [2020-10-13 06:27:16,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:16,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042919273] [2020-10-13 06:27:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:19,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:20,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:21,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:21,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-13 06:27:21,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 06:27:21,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:27:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 06:27:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:21,857 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:21,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:21,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:21,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:21,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:21,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:27:21,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:21,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:22,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:22,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:22,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 06:27:22,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:27:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:22,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:22,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:27:22,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:22,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 06:27:22,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 06:27:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:22,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042919273] [2020-10-13 06:27:22,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:22,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:22,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597600420] [2020-10-13 06:27:22,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:22,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:22,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:22,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:22,442 INFO L87 Difference]: Start difference. First operand 19413 states and 24677 transitions. Second operand 7 states. [2020-10-13 06:27:22,652 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:22,967 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:26,559 INFO L93 Difference]: Finished difference Result 40938 states and 53250 transitions. [2020-10-13 06:27:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:26,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-13 06:27:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:26,652 INFO L225 Difference]: With dead ends: 40938 [2020-10-13 06:27:26,652 INFO L226 Difference]: Without dead ends: 21642 [2020-10-13 06:27:26,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:26,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21642 states. [2020-10-13 06:27:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21642 to 21035. [2020-10-13 06:27:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21035 states. [2020-10-13 06:27:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21035 states to 21035 states and 25856 transitions. [2020-10-13 06:27:27,441 INFO L78 Accepts]: Start accepts. Automaton has 21035 states and 25856 transitions. Word has length 334 [2020-10-13 06:27:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:27,442 INFO L479 AbstractCegarLoop]: Abstraction has 21035 states and 25856 transitions. [2020-10-13 06:27:27,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 21035 states and 25856 transitions. [2020-10-13 06:27:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-13 06:27:27,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:27,480 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:27,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:27:27,481 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:27,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:27,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1914979164, now seen corresponding path program 1 times [2020-10-13 06:27:27,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:27,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541829283] [2020-10-13 06:27:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:29,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-13 06:27:32,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:27:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 06:27:32,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-13 06:27:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:27:32,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:32,729 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:32,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:32,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:27:32,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:32,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:32,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:32,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:27:32,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:32,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:32,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:27:32,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:27:32,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 06:27:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:27:32,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:32,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:27:32,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:27:32,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:32,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 06:27:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:32,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:27:32,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 06:27:33,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541829283] [2020-10-13 06:27:33,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:33,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:33,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274348538] [2020-10-13 06:27:33,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:33,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:33,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:33,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:33,040 INFO L87 Difference]: Start difference. First operand 21035 states and 25856 transitions. Second operand 7 states. [2020-10-13 06:27:33,703 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:34,199 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:37,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:37,840 INFO L93 Difference]: Finished difference Result 71178 states and 93732 transitions. [2020-10-13 06:27:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:37,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-13 06:27:37,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:38,117 INFO L225 Difference]: With dead ends: 71178 [2020-10-13 06:27:38,118 INFO L226 Difference]: Without dead ends: 56346 [2020-10-13 06:27:38,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:38,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56346 states. [2020-10-13 06:27:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56346 to 56288. [2020-10-13 06:27:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56288 states. [2020-10-13 06:27:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56288 states to 56288 states and 73233 transitions. [2020-10-13 06:27:39,650 INFO L78 Accepts]: Start accepts. Automaton has 56288 states and 73233 transitions. Word has length 350 [2020-10-13 06:27:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:39,650 INFO L479 AbstractCegarLoop]: Abstraction has 56288 states and 73233 transitions. [2020-10-13 06:27:39,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 56288 states and 73233 transitions. [2020-10-13 06:27:39,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-13 06:27:39,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:39,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:39,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:27:39,796 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:39,796 INFO L82 PathProgramCache]: Analyzing trace with hash -434788290, now seen corresponding path program 1 times [2020-10-13 06:27:39,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:39,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989278628] [2020-10-13 06:27:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:46,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:46,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-13 06:27:46,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:27:46,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:27:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:27:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:46,492 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:46,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:46,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:46,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:46,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:46,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:27:46,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:46,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:46,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:46,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:46,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:46,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:46,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:46,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:46,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 06:27:46,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:27:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:46,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:46,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:46,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:27:46,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:27:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:27:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 06:27:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:46,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:46,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:27:46,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:27:46,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:27:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 157 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 06:27:46,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989278628] [2020-10-13 06:27:46,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:46,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:46,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64506998] [2020-10-13 06:27:46,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:46,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:46,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:46,885 INFO L87 Difference]: Start difference. First operand 56288 states and 73233 transitions. Second operand 7 states. [2020-10-13 06:27:47,020 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:48,863 INFO L93 Difference]: Finished difference Result 87566 states and 113353 transitions. [2020-10-13 06:27:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:27:48,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-13 06:27:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:49,029 INFO L225 Difference]: With dead ends: 87566 [2020-10-13 06:27:49,030 INFO L226 Difference]: Without dead ends: 43296 [2020-10-13 06:27:49,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:27:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43296 states. [2020-10-13 06:27:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43296 to 43166. [2020-10-13 06:27:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43166 states. [2020-10-13 06:27:50,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43166 states to 43166 states and 50856 transitions. [2020-10-13 06:27:50,462 INFO L78 Accepts]: Start accepts. Automaton has 43166 states and 50856 transitions. Word has length 351 [2020-10-13 06:27:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:50,463 INFO L479 AbstractCegarLoop]: Abstraction has 43166 states and 50856 transitions. [2020-10-13 06:27:50,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 43166 states and 50856 transitions. [2020-10-13 06:27:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-13 06:27:50,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:50,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:50,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:27:50,532 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:50,532 INFO L82 PathProgramCache]: Analyzing trace with hash -144795066, now seen corresponding path program 1 times [2020-10-13 06:27:50,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:50,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571401342] [2020-10-13 06:27:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:55,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-13 06:27:55,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 06:27:55,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:27:55,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 06:27:55,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:55,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:55,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:55,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:27:55,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:55,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:56,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:56,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:27:56,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:56,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 06:27:56,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:56,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:56,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:56,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:27:56,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:56,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:27:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:56,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:56,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:56,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 06:27:56,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:56,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 06:27:56,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:27:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:27:56,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571401342] [2020-10-13 06:27:56,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:56,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:56,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503926986] [2020-10-13 06:27:56,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:56,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:56,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:56,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:56,271 INFO L87 Difference]: Start difference. First operand 43166 states and 50856 transitions. Second operand 7 states. [2020-10-13 06:27:56,561 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:57,346 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:59,551 INFO L93 Difference]: Finished difference Result 86506 states and 107769 transitions. [2020-10-13 06:27:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:59,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-13 06:27:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:59,794 INFO L225 Difference]: With dead ends: 86506 [2020-10-13 06:27:59,795 INFO L226 Difference]: Without dead ends: 55352 [2020-10-13 06:27:59,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:59,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55352 states. [2020-10-13 06:28:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55352 to 54435. [2020-10-13 06:28:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54435 states. [2020-10-13 06:28:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54435 states to 54435 states and 64990 transitions. [2020-10-13 06:28:01,393 INFO L78 Accepts]: Start accepts. Automaton has 54435 states and 64990 transitions. Word has length 371 [2020-10-13 06:28:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:01,394 INFO L479 AbstractCegarLoop]: Abstraction has 54435 states and 64990 transitions. [2020-10-13 06:28:01,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 54435 states and 64990 transitions. [2020-10-13 06:28:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-13 06:28:01,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:01,491 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:01,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:28:01,492 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:01,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:01,493 INFO L82 PathProgramCache]: Analyzing trace with hash -135608504, now seen corresponding path program 1 times [2020-10-13 06:28:01,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:01,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052104979] [2020-10-13 06:28:01,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:01,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:02,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:06,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:06,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-13 06:28:06,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:28:06,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 06:28:06,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-10-13 06:28:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-13 06:28:06,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:06,983 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:06,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:06,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:06,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:06,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:06,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:06,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:07,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:07,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:07,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:28:07,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:07,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:07,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:07,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:28:07,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:07,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:28:07,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:28:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:07,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:28:07,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:07,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:28:07,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:07,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 06:28:07,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 161 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-13 06:28:07,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052104979] [2020-10-13 06:28:07,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:07,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:28:07,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858574564] [2020-10-13 06:28:07,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:28:07,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:07,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:28:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:28:07,332 INFO L87 Difference]: Start difference. First operand 54435 states and 64990 transitions. Second operand 5 states. [2020-10-13 06:28:07,839 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:10,372 INFO L93 Difference]: Finished difference Result 116610 states and 141356 transitions. [2020-10-13 06:28:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:28:10,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2020-10-13 06:28:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:10,577 INFO L225 Difference]: With dead ends: 116610 [2020-10-13 06:28:10,577 INFO L226 Difference]: Without dead ends: 63415 [2020-10-13 06:28:10,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:28:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63415 states. [2020-10-13 06:28:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63415 to 63369. [2020-10-13 06:28:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63369 states. [2020-10-13 06:28:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63369 states to 63369 states and 77440 transitions. [2020-10-13 06:28:12,019 INFO L78 Accepts]: Start accepts. Automaton has 63369 states and 77440 transitions. Word has length 372 [2020-10-13 06:28:12,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:12,020 INFO L479 AbstractCegarLoop]: Abstraction has 63369 states and 77440 transitions. [2020-10-13 06:28:12,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:28:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 63369 states and 77440 transitions. [2020-10-13 06:28:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 06:28:12,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:12,108 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:12,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:28:12,108 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:12,109 INFO L82 PathProgramCache]: Analyzing trace with hash -310828265, now seen corresponding path program 1 times [2020-10-13 06:28:12,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:12,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494159144] [2020-10-13 06:28:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:14,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:14,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-13 06:28:14,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:28:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1989 [2020-10-13 06:28:14,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:28:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 06:28:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:14,345 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:14,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:14,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:14,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:14,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:28:14,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:14,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:16,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:16,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:28:16,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1902 [2020-10-13 06:28:16,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:28:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:16,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:28:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:16,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:16,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:16,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 06:28:16,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 06:28:16,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:16,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 06:28:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:28:16,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494159144] [2020-10-13 06:28:16,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:16,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:16,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81488281] [2020-10-13 06:28:16,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:16,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:16,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:16,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:16,652 INFO L87 Difference]: Start difference. First operand 63369 states and 77440 transitions. Second operand 7 states. [2020-10-13 06:28:16,786 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:28:17,905 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:28:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:19,971 INFO L93 Difference]: Finished difference Result 138205 states and 170969 transitions. [2020-10-13 06:28:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:19,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-13 06:28:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:20,160 INFO L225 Difference]: With dead ends: 138205 [2020-10-13 06:28:20,161 INFO L226 Difference]: Without dead ends: 76074 [2020-10-13 06:28:20,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76074 states. [2020-10-13 06:28:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76074 to 74879. [2020-10-13 06:28:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74879 states. [2020-10-13 06:28:21,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74879 states to 74879 states and 90602 transitions. [2020-10-13 06:28:21,748 INFO L78 Accepts]: Start accepts. Automaton has 74879 states and 90602 transitions. Word has length 376 [2020-10-13 06:28:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:21,749 INFO L479 AbstractCegarLoop]: Abstraction has 74879 states and 90602 transitions. [2020-10-13 06:28:21,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 74879 states and 90602 transitions. [2020-10-13 06:28:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-13 06:28:21,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:21,866 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:21,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:28:21,867 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:21,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:21,867 INFO L82 PathProgramCache]: Analyzing trace with hash -2073415172, now seen corresponding path program 1 times [2020-10-13 06:28:21,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:21,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489105414] [2020-10-13 06:28:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:24,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:27,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:27,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-13 06:28:27,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 06:28:27,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:28:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 06:28:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:27,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:27,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:27,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:27,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:27,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:27,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:27,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:27,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:27,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:27,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:28:27,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:28:27,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:28:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:27,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:28:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:27,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:27,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:28:27,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:27,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-13 06:28:27,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:28:27,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-13 06:28:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:27,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:27,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:27,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:28:27,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:28:27,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:28:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 234 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:28:27,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489105414] [2020-10-13 06:28:27,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:27,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:27,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490606895] [2020-10-13 06:28:27,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:27,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:27,790 INFO L87 Difference]: Start difference. First operand 74879 states and 90602 transitions. Second operand 7 states. [2020-10-13 06:28:27,924 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:31,229 INFO L93 Difference]: Finished difference Result 164672 states and 202651 transitions. [2020-10-13 06:28:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:28:31,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-13 06:28:31,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:31,500 INFO L225 Difference]: With dead ends: 164672 [2020-10-13 06:28:31,501 INFO L226 Difference]: Without dead ends: 106292 [2020-10-13 06:28:31,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:28:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106292 states. [2020-10-13 06:28:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106292 to 106240. [2020-10-13 06:28:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106240 states. [2020-10-13 06:28:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106240 states to 106240 states and 130281 transitions. [2020-10-13 06:28:36,820 INFO L78 Accepts]: Start accepts. Automaton has 106240 states and 130281 transitions. Word has length 412 [2020-10-13 06:28:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:36,820 INFO L479 AbstractCegarLoop]: Abstraction has 106240 states and 130281 transitions. [2020-10-13 06:28:36,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 106240 states and 130281 transitions. [2020-10-13 06:28:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-13 06:28:36,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:36,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:36,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:28:36,940 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:36,940 INFO L82 PathProgramCache]: Analyzing trace with hash -683452031, now seen corresponding path program 1 times [2020-10-13 06:28:36,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:36,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642652126] [2020-10-13 06:28:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:37,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking...