/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/reducercommutativity/sep20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:16:08,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:16:08,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:16:08,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:16:08,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:16:08,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:16:08,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:16:08,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:16:08,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:16:08,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:16:08,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:16:08,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:16:08,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:16:08,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:16:08,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:16:08,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:16:08,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:16:08,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:16:08,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:16:08,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:16:08,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:16:08,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:16:08,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:16:08,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:16:08,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:16:08,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:16:08,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:16:08,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:16:08,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:16:08,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:16:08,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:16:08,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:16:08,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:16:08,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:16:08,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:16:08,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:16:08,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:16:08,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:16:08,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:16:08,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:16:08,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:16:08,854 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 [2020-10-15 02:16:08,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:16:08,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:16:08,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:16:08,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:16:08,891 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:16:08,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:16:08,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:16:08,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:16:08,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:16:08,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:16:08,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:16:08,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:16:08,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:16:08,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:16:08,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:16:08,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:16:08,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:16:08,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:16:08,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:16:08,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:16:08,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:16:08,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:16:08,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:16:08,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:16:08,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:16:08,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:16:08,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:16:08,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:16:08,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:16:08,896 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:16:09,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:16:09,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:16:09,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:16:09,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:16:09,218 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:16:09,218 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep20-1.i [2020-10-15 02:16:09,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b34830acf/08ceb6e0a69b4f929d51a00590ef202d/FLAG237b13a1b [2020-10-15 02:16:09,681 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:16:09,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep20-1.i [2020-10-15 02:16:09,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b34830acf/08ceb6e0a69b4f929d51a00590ef202d/FLAG237b13a1b [2020-10-15 02:16:10,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b34830acf/08ceb6e0a69b4f929d51a00590ef202d [2020-10-15 02:16:10,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:16:10,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:16:10,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:16:10,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:16:10,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:16:10,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:16:10" (1/1) ... [2020-10-15 02:16:10,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fd4afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10, skipping insertion in model container [2020-10-15 02:16:10,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:16:10" (1/1) ... [2020-10-15 02:16:10,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:16:10,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:16:10,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:16:10,277 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:16:10,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:16:10,313 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:16:10,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10 WrapperNode [2020-10-15 02:16:10,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:16:10,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:16:10,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:16:10,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:16:10,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10" (1/1) ... [2020-10-15 02:16:10,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10" (1/1) ... [2020-10-15 02:16:10,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10" (1/1) ... [2020-10-15 02:16:10,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10" (1/1) ... [2020-10-15 02:16:10,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10" (1/1) ... [2020-10-15 02:16:10,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10" (1/1) ... [2020-10-15 02:16:10,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10" (1/1) ... [2020-10-15 02:16:10,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:16:10,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:16:10,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:16:10,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:16:10,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10" (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 [2020-10-15 02:16:10,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:16:10,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:16:10,515 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-15 02:16:10,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:16:10,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:16:10,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:16:10,516 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-15 02:16:10,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:16:10,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:16:10,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:16:10,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:16:10,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:16:10,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:16:10,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:16:10,769 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:16:10,770 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:16:10,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:16:10 BoogieIcfgContainer [2020-10-15 02:16:10,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:16:10,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:16:10,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:16:10,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:16:10,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:16:10" (1/3) ... [2020-10-15 02:16:10,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627e675d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:16:10, skipping insertion in model container [2020-10-15 02:16:10,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:10" (2/3) ... [2020-10-15 02:16:10,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627e675d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:16:10, skipping insertion in model container [2020-10-15 02:16:10,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:16:10" (3/3) ... [2020-10-15 02:16:10,783 INFO L109 eAbstractionObserver]: Analyzing ICFG sep20-1.i [2020-10-15 02:16:10,795 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:16:10,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:16:10,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:16:10,856 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:16:10,856 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:16:10,856 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:16:10,856 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:16:10,856 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:16:10,857 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:16:10,857 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:16:10,857 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:16:10,879 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-15 02:16:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:16:10,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:10,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:10,889 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:10,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2020-10-15 02:16:10,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:10,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734014763] [2020-10-15 02:16:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:11,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:11,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:11,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:12,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:12,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:16:12,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:16:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1123 [2020-10-15 02:16:12,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:12,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:16:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:16:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:16:12,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:12,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:12,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:12,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:16:12,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:12,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:12,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:12,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:12,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:12,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:12,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:12,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:12,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 02:16:12,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:12,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:16:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:12,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:16:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:12,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:12,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:12,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 02:16:12,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:12,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:16:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:12,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:12,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:12,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:12,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:12,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:12,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 02:16:12,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:12,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:12,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:12,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:12,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:16:12,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:16:12,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734014763] [2020-10-15 02:16:12,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:16:12,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:16:12,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916272728] [2020-10-15 02:16:12,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:16:12,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:12,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:16:12,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:16:12,581 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 11 states. [2020-10-15 02:16:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:12,902 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-10-15 02:16:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:16:12,905 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-15 02:16:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:12,918 INFO L225 Difference]: With dead ends: 86 [2020-10-15 02:16:12,918 INFO L226 Difference]: Without dead ends: 52 [2020-10-15 02:16:12,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:16:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-15 02:16:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-15 02:16:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 02:16:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2020-10-15 02:16:12,983 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 32 [2020-10-15 02:16:12,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:12,984 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2020-10-15 02:16:12,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:16:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2020-10-15 02:16:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-15 02:16:12,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:12,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:12,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:16:12,989 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:12,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1764294835, now seen corresponding path program 1 times [2020-10-15 02:16:12,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:12,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187183767] [2020-10-15 02:16:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:13,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:14,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 02:16:14,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:14,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-15 02:16:14,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:14,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:16:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 02:16:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:16:14,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:14,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:14,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:14,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:14,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:14,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:14,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:14,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:14,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:14,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:14,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:14,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:14,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:14,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:16:14,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:14,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:16:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:16:14,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:16:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:14,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:14,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:16:14,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:14,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:16:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:16:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:14,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:14,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 02:16:14,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 02:16:14,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:14,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:14,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:16:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:16:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20 [2020-10-15 02:16:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:16:14,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187183767] [2020-10-15 02:16:14,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:14,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:16:14,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171806526] [2020-10-15 02:16:14,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:16:14,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:14,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:16:14,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:16:14,188 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand 5 states. [2020-10-15 02:16:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:14,289 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2020-10-15 02:16:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:16:14,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-15 02:16:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:14,291 INFO L225 Difference]: With dead ends: 62 [2020-10-15 02:16:14,291 INFO L226 Difference]: Without dead ends: 33 [2020-10-15 02:16:14,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:16:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-15 02:16:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-15 02:16:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 02:16:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-15 02:16:14,300 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 35 [2020-10-15 02:16:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:14,300 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-15 02:16:14,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:16:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-15 02:16:14,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 02:16:14,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:14,303 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:14,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:16:14,303 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:14,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:14,304 INFO L82 PathProgramCache]: Analyzing trace with hash -738945770, now seen corresponding path program 2 times [2020-10-15 02:16:14,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:14,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602925937] [2020-10-15 02:16:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:15,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:19,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:16:19,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 02:16:19,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:19,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:19,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:19,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:16:19,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:19,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:19,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:16:19,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:19,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 02:16:19,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:19,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:19,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 02:16:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:19,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:19,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:16:19,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 02:16:19,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:19,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:19,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 02:16:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:16:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 02:16:19,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:19,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:19,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:19,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:19,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-15 02:16:19,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602925937] [2020-10-15 02:16:19,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:19,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 02:16:19,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375834575] [2020-10-15 02:16:19,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:16:19,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:19,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:16:19,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:16:19,553 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-15 02:16:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:19,681 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2020-10-15 02:16:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:16:19,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-15 02:16:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:19,683 INFO L225 Difference]: With dead ends: 58 [2020-10-15 02:16:19,683 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 02:16:19,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:16:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 02:16:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-15 02:16:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-15 02:16:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-15 02:16:19,691 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 50 [2020-10-15 02:16:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:19,691 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-15 02:16:19,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:16:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-15 02:16:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 02:16:19,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:19,694 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:19,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:16:19,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:19,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:19,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1066977793, now seen corresponding path program 3 times [2020-10-15 02:16:19,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:19,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134416193] [2020-10-15 02:16:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:19,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:24,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 02:16:24,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:24,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 02:16:24,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:24,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 02:16:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:24,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:16:24,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:24,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:24,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:16:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:24,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:24,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:24,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:24,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:24,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 02:16:24,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 02:16:24,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:24,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:24,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:24,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 02:16:24,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 02:16:24,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:24,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:16:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 02:16:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:24,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 02:16:24,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:24,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 02:16:24,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:24,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-15 02:16:25,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134416193] [2020-10-15 02:16:25,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:25,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 02:16:25,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007980135] [2020-10-15 02:16:25,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:16:25,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:16:25,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:16:25,017 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 7 states. [2020-10-15 02:16:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:25,188 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2020-10-15 02:16:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:16:25,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-10-15 02:16:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:25,189 INFO L225 Difference]: With dead ends: 64 [2020-10-15 02:16:25,190 INFO L226 Difference]: Without dead ends: 39 [2020-10-15 02:16:25,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:16:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-15 02:16:25,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-15 02:16:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 02:16:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-15 02:16:25,197 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 59 [2020-10-15 02:16:25,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:25,197 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-15 02:16:25,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:16:25,198 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-15 02:16:25,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:16:25,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:25,199 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:25,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:16:25,200 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:25,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:25,200 INFO L82 PathProgramCache]: Analyzing trace with hash -65292490, now seen corresponding path program 4 times [2020-10-15 02:16:25,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:25,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005328944] [2020-10-15 02:16:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:25,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:25,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:25,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:30,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:16:30,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:16:30,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:30,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-15 02:16:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:30,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:30,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:30,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:30,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:30,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:30,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:16:30,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:30,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-15 02:16:30,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:30,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:30,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 02:16:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:30,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:16:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 02:16:30,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:30,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:16:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:30,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:16:30,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:30,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-15 02:16:30,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:30,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-15 02:16:30,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005328944] [2020-10-15 02:16:30,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:30,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 02:16:30,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714097296] [2020-10-15 02:16:30,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:16:30,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:30,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:16:30,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:16:30,559 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 8 states. [2020-10-15 02:16:30,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:30,738 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2020-10-15 02:16:30,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:16:30,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-15 02:16:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:30,740 INFO L225 Difference]: With dead ends: 70 [2020-10-15 02:16:30,740 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 02:16:30,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:16:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 02:16:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-15 02:16:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 02:16:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-15 02:16:30,747 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 68 [2020-10-15 02:16:30,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:30,747 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-15 02:16:30,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:16:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-15 02:16:30,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 02:16:30,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:30,749 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:30,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:16:30,749 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:30,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:30,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1783214881, now seen corresponding path program 5 times [2020-10-15 02:16:30,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:30,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478839751] [2020-10-15 02:16:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:30,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:35,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 02:16:35,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 02:16:35,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:35,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 02:16:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:35,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:35,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:35,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:35,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:35,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:35,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:35,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:35,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:35,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:35,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:35,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:16:35,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-15 02:16:35,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:35,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:35,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 02:16:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:36,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:16:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-15 02:16:36,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:36,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:36,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:36,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-15 02:16:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:36,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:36,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:16:36,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:36,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-15 02:16:36,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:36,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 105 proven. 210 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-15 02:16:36,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478839751] [2020-10-15 02:16:36,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:36,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 02:16:36,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045138862] [2020-10-15 02:16:36,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 02:16:36,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:36,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 02:16:36,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:16:36,241 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 9 states. [2020-10-15 02:16:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:36,449 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-10-15 02:16:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:16:36,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-15 02:16:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:36,451 INFO L225 Difference]: With dead ends: 76 [2020-10-15 02:16:36,451 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 02:16:36,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:16:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 02:16:36,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-15 02:16:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-15 02:16:36,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-15 02:16:36,457 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 77 [2020-10-15 02:16:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:36,458 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-15 02:16:36,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 02:16:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-15 02:16:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 02:16:36,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:36,459 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:36,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:16:36,460 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:36,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:36,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1461104298, now seen corresponding path program 6 times [2020-10-15 02:16:36,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:36,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934255874] [2020-10-15 02:16:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:36,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:41,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 02:16:41,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:16:41,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:41,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:16:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:16:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:41,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:41,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:41,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:41,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:41,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:41,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:41,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:16:41,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:41,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-15 02:16:41,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:41,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:16:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:16:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 02:16:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:41,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:41,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:16:41,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-15 02:16:41,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:41,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:16:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:16:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:41,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 02:16:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:42,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:16:42,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:42,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-15 02:16:42,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:42,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:16:42,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:42,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:16:42,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 306 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-15 02:16:42,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934255874] [2020-10-15 02:16:42,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:42,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:16:42,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344882707] [2020-10-15 02:16:42,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:16:42,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:42,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:16:42,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:16:42,056 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 10 states. [2020-10-15 02:16:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:42,286 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2020-10-15 02:16:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:16:42,289 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-15 02:16:42,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:42,291 INFO L225 Difference]: With dead ends: 82 [2020-10-15 02:16:42,291 INFO L226 Difference]: Without dead ends: 48 [2020-10-15 02:16:42,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:16:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-15 02:16:42,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-15 02:16:42,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-15 02:16:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-15 02:16:42,301 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 86 [2020-10-15 02:16:42,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:42,302 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-15 02:16:42,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:16:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-15 02:16:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 02:16:42,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:42,304 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:42,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:16:42,309 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:42,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1543869505, now seen corresponding path program 7 times [2020-10-15 02:16:42,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:42,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915988654] [2020-10-15 02:16:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:42,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:47,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 02:16:47,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-15 02:16:47,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:47,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:16:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 02:16:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:16:47,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:47,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:47,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:47,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:16:47,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:47,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:47,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:47,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:47,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 02:16:47,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-15 02:16:47,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:47,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:16:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:16:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:47,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 02:16:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:47,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:47,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 02:16:47,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-15 02:16:47,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:47,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:16:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:16:47,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 02:16:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:47,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:47,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 02:16:47,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-15 02:16:47,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:47,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:16:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:16:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 210 proven. 420 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-15 02:16:48,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915988654] [2020-10-15 02:16:48,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:48,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:16:48,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451044206] [2020-10-15 02:16:48,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:16:48,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:48,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:16:48,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:16:48,009 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 11 states. [2020-10-15 02:16:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:48,277 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2020-10-15 02:16:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 02:16:48,277 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-10-15 02:16:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:48,278 INFO L225 Difference]: With dead ends: 88 [2020-10-15 02:16:48,279 INFO L226 Difference]: Without dead ends: 51 [2020-10-15 02:16:48,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:16:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-15 02:16:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-15 02:16:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-15 02:16:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-10-15 02:16:48,297 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 95 [2020-10-15 02:16:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:48,297 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-15 02:16:48,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:16:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-10-15 02:16:48,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 02:16:48,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:48,300 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:48,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:16:48,301 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:48,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1095277706, now seen corresponding path program 8 times [2020-10-15 02:16:48,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:48,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217220787] [2020-10-15 02:16:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:48,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:53,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:53,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 02:16:53,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 02:16:53,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:53,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:16:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 02:16:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:16:53,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:53,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:53,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:53,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:16:53,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:53,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:16:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:53,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:53,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:53,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:16:53,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:53,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-15 02:16:53,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:53,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:16:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:16:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:53,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 02:16:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:53,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:53,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:16:53,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-15 02:16:53,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:53,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:16:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:16:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:53,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:16:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:53,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:53,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:16:53,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-15 02:16:53,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:53,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:16:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:16:53,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 276 proven. 552 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-15 02:16:53,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217220787] [2020-10-15 02:16:53,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:53,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:16:53,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931442508] [2020-10-15 02:16:53,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:16:53,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:53,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:16:53,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:16:53,978 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 12 states. [2020-10-15 02:16:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:54,277 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2020-10-15 02:16:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:16:54,278 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-10-15 02:16:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:54,279 INFO L225 Difference]: With dead ends: 94 [2020-10-15 02:16:54,279 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 02:16:54,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:16:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 02:16:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-15 02:16:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 02:16:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-15 02:16:54,287 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 104 [2020-10-15 02:16:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:54,288 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-15 02:16:54,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:16:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-15 02:16:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 02:16:54,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:54,289 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:54,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:16:54,289 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:54,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:54,290 INFO L82 PathProgramCache]: Analyzing trace with hash -799436129, now seen corresponding path program 9 times [2020-10-15 02:16:54,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:54,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182802746] [2020-10-15 02:16:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:54,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:59,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:59,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 02:16:59,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 02:16:59,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:59,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:16:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 02:16:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:16:59,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:59,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:59,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:59,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:59,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:59,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:59,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:59,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:59,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:59,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:59,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:59,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:16:59,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:59,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-15 02:16:59,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:59,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:16:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:16:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 02:16:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:59,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:59,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:16:59,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:59,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-15 02:16:59,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:59,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:59,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:16:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:16:59,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:59,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-15 02:16:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:59,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:59,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:59,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:16:59,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-15 02:16:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:59,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:16:59,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:59,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:16:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-15 02:16:59,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182802746] [2020-10-15 02:16:59,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:59,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 02:16:59,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9907739] [2020-10-15 02:16:59,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:16:59,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:59,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:16:59,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:16:59,895 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 13 states. [2020-10-15 02:17:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:00,214 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2020-10-15 02:17:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 02:17:00,215 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-10-15 02:17:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:00,216 INFO L225 Difference]: With dead ends: 100 [2020-10-15 02:17:00,216 INFO L226 Difference]: Without dead ends: 57 [2020-10-15 02:17:00,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:17:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-15 02:17:00,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-15 02:17:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 02:17:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2020-10-15 02:17:00,225 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 113 [2020-10-15 02:17:00,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:00,225 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2020-10-15 02:17:00,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:17:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2020-10-15 02:17:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 02:17:00,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:00,227 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:00,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:17:00,227 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:00,228 INFO L82 PathProgramCache]: Analyzing trace with hash -178262634, now seen corresponding path program 10 times [2020-10-15 02:17:00,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:00,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322304896] [2020-10-15 02:17:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:00,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:05,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:05,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 02:17:05,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 02:17:05,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:05,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:05,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:05,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:05,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:05,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:05,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:05,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:05,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:05,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:05,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:05,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:17:05,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-15 02:17:05,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:05,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 02:17:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:06,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:06,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:17:06,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-15 02:17:06,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:06,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:06,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:06,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-15 02:17:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:06,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:06,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:06,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:17:06,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-15 02:17:06,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:06,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 435 proven. 870 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-15 02:17:06,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322304896] [2020-10-15 02:17:06,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:06,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 02:17:06,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207102706] [2020-10-15 02:17:06,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:17:06,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:06,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:17:06,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:17:06,771 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand 14 states. [2020-10-15 02:17:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:07,102 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2020-10-15 02:17:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 02:17:07,102 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-15 02:17:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:07,104 INFO L225 Difference]: With dead ends: 106 [2020-10-15 02:17:07,105 INFO L226 Difference]: Without dead ends: 60 [2020-10-15 02:17:07,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:17:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-15 02:17:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-15 02:17:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-15 02:17:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2020-10-15 02:17:07,116 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 122 [2020-10-15 02:17:07,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:07,117 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2020-10-15 02:17:07,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:17:07,117 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2020-10-15 02:17:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 02:17:07,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:07,119 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:07,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:17:07,119 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:07,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2088354175, now seen corresponding path program 11 times [2020-10-15 02:17:07,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:07,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165284367] [2020-10-15 02:17:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:07,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:12,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 02:17:12,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 02:17:12,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:12,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:12,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:12,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:12,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:12,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:12,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:12,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:12,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 02:17:12,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-15 02:17:12,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:12,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:12,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:12,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:17:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:12,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 02:17:12,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:12,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-15 02:17:12,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:12,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:12,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:12,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-15 02:17:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 02:17:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-15 02:17:13,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:13,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 528 proven. 1056 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-15 02:17:13,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165284367] [2020-10-15 02:17:13,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:13,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 02:17:13,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837079394] [2020-10-15 02:17:13,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:17:13,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:13,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:17:13,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:17:13,578 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand 15 states. [2020-10-15 02:17:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:14,084 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-10-15 02:17:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 02:17:14,085 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 131 [2020-10-15 02:17:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:14,087 INFO L225 Difference]: With dead ends: 112 [2020-10-15 02:17:14,087 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 02:17:14,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-15 02:17:14,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 02:17:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-15 02:17:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 02:17:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-15 02:17:14,111 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 131 [2020-10-15 02:17:14,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:14,115 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-15 02:17:14,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:17:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-15 02:17:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 02:17:14,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:14,120 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:14,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:17:14,121 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2017259446, now seen corresponding path program 12 times [2020-10-15 02:17:14,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:14,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937297589] [2020-10-15 02:17:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:14,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:14,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:14,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:19,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:19,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-15 02:17:19,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-15 02:17:19,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:19,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-15 02:17:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:19,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:19,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:19,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:19,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:19,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:19,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:19,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:19,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:19,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:19,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:17:19,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-15 02:17:19,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:19,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 02:17:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:20,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:20,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:17:20,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-15 02:17:20,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:20,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 02:17:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:20,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:20,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:17:20,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-15 02:17:20,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:20,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2013 backedges. 630 proven. 1260 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-15 02:17:20,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937297589] [2020-10-15 02:17:20,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:20,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 02:17:20,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451391145] [2020-10-15 02:17:20,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 02:17:20,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:20,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 02:17:20,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:17:20,679 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 16 states. [2020-10-15 02:17:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:21,051 INFO L93 Difference]: Finished difference Result 118 states and 154 transitions. [2020-10-15 02:17:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 02:17:21,052 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 140 [2020-10-15 02:17:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:21,054 INFO L225 Difference]: With dead ends: 118 [2020-10-15 02:17:21,054 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 02:17:21,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-15 02:17:21,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 02:17:21,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-15 02:17:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 02:17:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2020-10-15 02:17:21,065 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 140 [2020-10-15 02:17:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:21,066 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2020-10-15 02:17:21,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 02:17:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2020-10-15 02:17:21,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-15 02:17:21,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:21,068 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:21,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:17:21,068 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:21,068 INFO L82 PathProgramCache]: Analyzing trace with hash -427755425, now seen corresponding path program 13 times [2020-10-15 02:17:21,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:21,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134152003] [2020-10-15 02:17:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:26,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-15 02:17:26,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:26,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:17:26,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:26,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:26,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:26,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:26,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:26,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:26,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:26,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:17:26,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:26,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-15 02:17:26,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:26,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:26,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:26,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-15 02:17:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:26,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:17:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-15 02:17:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:26,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:26,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-15 02:17:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:27,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:17:27,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-15 02:17:27,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:27,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 741 proven. 1482 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-15 02:17:27,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134152003] [2020-10-15 02:17:27,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:27,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 02:17:27,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199628191] [2020-10-15 02:17:27,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 02:17:27,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:27,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 02:17:27,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:17:27,340 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand 17 states. [2020-10-15 02:17:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:27,750 INFO L93 Difference]: Finished difference Result 124 states and 162 transitions. [2020-10-15 02:17:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 02:17:27,751 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 149 [2020-10-15 02:17:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:27,752 INFO L225 Difference]: With dead ends: 124 [2020-10-15 02:17:27,752 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 02:17:27,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:17:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 02:17:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-15 02:17:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-15 02:17:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-10-15 02:17:27,763 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 149 [2020-10-15 02:17:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:27,763 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-10-15 02:17:27,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 02:17:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-10-15 02:17:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 02:17:27,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:27,765 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:27,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:17:27,765 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:27,765 INFO L82 PathProgramCache]: Analyzing trace with hash -2044171818, now seen corresponding path program 14 times [2020-10-15 02:17:27,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:27,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200430586] [2020-10-15 02:17:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:32,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:32,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 02:17:32,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:32,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-15 02:17:32,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:32,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:32,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:32,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:32,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:32,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:32,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:32,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:32,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:32,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:32,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:33,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:17:33,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:33,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-15 02:17:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:33,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:33,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 02:17:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:33,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:33,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:17:33,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-15 02:17:33,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:33,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:33,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-15 02:17:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:33,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:34,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:34,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:17:34,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-15 02:17:34,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:34,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 861 proven. 1722 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-15 02:17:34,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200430586] [2020-10-15 02:17:34,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:34,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 02:17:34,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423519377] [2020-10-15 02:17:34,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 02:17:34,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:34,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 02:17:34,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-15 02:17:34,310 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 18 states. [2020-10-15 02:17:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:34,782 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2020-10-15 02:17:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:17:34,783 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 158 [2020-10-15 02:17:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:34,784 INFO L225 Difference]: With dead ends: 130 [2020-10-15 02:17:34,784 INFO L226 Difference]: Without dead ends: 72 [2020-10-15 02:17:34,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:17:34,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-15 02:17:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-15 02:17:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 02:17:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2020-10-15 02:17:34,792 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 158 [2020-10-15 02:17:34,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:34,792 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2020-10-15 02:17:34,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 02:17:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2020-10-15 02:17:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:17:34,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:34,795 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:34,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:17:34,795 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:34,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:34,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1995098305, now seen corresponding path program 15 times [2020-10-15 02:17:34,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:34,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203438971] [2020-10-15 02:17:34,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:34,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:39,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:39,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 02:17:39,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 02:17:39,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:39,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:17:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 02:17:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:17:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:39,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:39,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:39,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:39,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:39,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:39,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:39,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:40,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 02:17:40,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-15 02:17:40,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:40,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:17:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:17:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:40,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 02:17:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:40,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 02:17:40,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:40,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-15 02:17:40,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:40,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:17:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:17:40,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-15 02:17:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:41,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:41,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 02:17:41,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:41,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-15 02:17:41,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:41,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:17:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:17:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 990 proven. 1980 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-15 02:17:41,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203438971] [2020-10-15 02:17:41,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:41,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 02:17:41,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600386760] [2020-10-15 02:17:41,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 02:17:41,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:41,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 02:17:41,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:17:41,530 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand 19 states. [2020-10-15 02:17:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:42,026 INFO L93 Difference]: Finished difference Result 136 states and 178 transitions. [2020-10-15 02:17:42,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:17:42,026 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 167 [2020-10-15 02:17:42,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:42,028 INFO L225 Difference]: With dead ends: 136 [2020-10-15 02:17:42,028 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 02:17:42,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:17:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 02:17:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-15 02:17:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 02:17:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2020-10-15 02:17:42,036 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 167 [2020-10-15 02:17:42,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:42,036 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2020-10-15 02:17:42,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 02:17:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2020-10-15 02:17:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 02:17:42,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:42,039 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:42,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:17:42,039 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:42,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:42,039 INFO L82 PathProgramCache]: Analyzing trace with hash 293362678, now seen corresponding path program 16 times [2020-10-15 02:17:42,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:42,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061018060] [2020-10-15 02:17:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:42,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:42,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:47,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-15 02:17:47,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-15 02:17:47,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:47,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:17:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 02:17:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:17:47,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:47,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:47,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:47,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:47,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:47,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:47,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:47,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:17:47,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-15 02:17:47,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:47,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:17:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:17:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 02:17:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:48,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:17:48,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-15 02:17:48,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:48,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:17:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:17:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:48,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-15 02:17:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:48,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:48,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:49,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:49,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:17:49,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-15 02:17:49,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:49,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:17:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:17:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3543 backedges. 1128 proven. 2256 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-15 02:17:49,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061018060] [2020-10-15 02:17:49,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:49,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 02:17:49,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103615115] [2020-10-15 02:17:49,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 02:17:49,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:49,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 02:17:49,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-15 02:17:49,153 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand 20 states. [2020-10-15 02:17:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:49,703 INFO L93 Difference]: Finished difference Result 142 states and 186 transitions. [2020-10-15 02:17:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:17:49,703 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-10-15 02:17:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:49,704 INFO L225 Difference]: With dead ends: 142 [2020-10-15 02:17:49,704 INFO L226 Difference]: Without dead ends: 78 [2020-10-15 02:17:49,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 02:17:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-15 02:17:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-15 02:17:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-15 02:17:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-15 02:17:49,711 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 176 [2020-10-15 02:17:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:49,712 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-15 02:17:49,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 02:17:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-15 02:17:49,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 02:17:49,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:49,714 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:49,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:17:49,715 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:49,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2069659167, now seen corresponding path program 17 times [2020-10-15 02:17:49,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:49,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878361376] [2020-10-15 02:17:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:54,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:54,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-15 02:17:54,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-15 02:17:54,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:54,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:17:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-15 02:17:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:17:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:54,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:54,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:54,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:54,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:54,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:54,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:54,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:54,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:55,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:55,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:17:55,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-15 02:17:55,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:55,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:17:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:17:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:55,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 02:17:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:56,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:56,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:17:56,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:56,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-15 02:17:56,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:56,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:17:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:56,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:17:56,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-15 02:17:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:56,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:56,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:56,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:17:56,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:56,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-15 02:17:56,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:56,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:56,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:17:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:17:56,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3993 backedges. 1275 proven. 2550 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-15 02:17:56,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878361376] [2020-10-15 02:17:56,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:56,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 02:17:56,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197800104] [2020-10-15 02:17:56,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 02:17:56,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:56,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 02:17:56,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:17:56,778 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 21 states. [2020-10-15 02:17:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:57,305 INFO L93 Difference]: Finished difference Result 148 states and 194 transitions. [2020-10-15 02:17:57,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 02:17:57,305 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 185 [2020-10-15 02:17:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:57,306 INFO L225 Difference]: With dead ends: 148 [2020-10-15 02:17:57,306 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 02:17:57,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 02:17:57,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 02:17:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-15 02:17:57,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 02:17:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2020-10-15 02:17:57,313 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 185 [2020-10-15 02:17:57,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:57,314 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2020-10-15 02:17:57,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 02:17:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2020-10-15 02:17:57,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-15 02:17:57,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:57,316 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:57,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 02:17:57,317 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:57,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1611843094, now seen corresponding path program 18 times [2020-10-15 02:17:57,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:57,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601835228] [2020-10-15 02:17:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:57,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:57,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:02,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:02,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-15 02:18:02,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-15 02:18:02,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:02,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:02,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:02,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:02,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:02,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:02,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:02,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:02,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:02,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:18:02,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-15 02:18:02,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:02,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:03,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-15 02:18:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:03,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:03,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:03,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:18:03,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-15 02:18:03,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:03,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-15 02:18:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:04,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:04,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:18:04,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-15 02:18:04,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:04,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1431 proven. 2862 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-15 02:18:04,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601835228] [2020-10-15 02:18:04,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:04,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 02:18:04,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039990504] [2020-10-15 02:18:04,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 02:18:04,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:04,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 02:18:04,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-15 02:18:04,357 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 22 states. [2020-10-15 02:18:04,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:04,933 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2020-10-15 02:18:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 02:18:04,934 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 194 [2020-10-15 02:18:04,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:04,935 INFO L225 Difference]: With dead ends: 154 [2020-10-15 02:18:04,935 INFO L226 Difference]: Without dead ends: 84 [2020-10-15 02:18:04,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 02:18:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-15 02:18:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-15 02:18:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 02:18:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2020-10-15 02:18:04,951 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 194 [2020-10-15 02:18:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:04,951 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2020-10-15 02:18:04,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 02:18:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2020-10-15 02:18:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-15 02:18:04,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:04,954 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:04,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 02:18:04,954 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash -788738817, now seen corresponding path program 19 times [2020-10-15 02:18:04,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:04,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060246573] [2020-10-15 02:18:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:04,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:05,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:10,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:10,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-15 02:18:10,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:10,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 02:18:10,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:10,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-15 02:18:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:10,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:10,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:10,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:10,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:10,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:10,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:10,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:10,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:10,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:10,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:10,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:18:10,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:10,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-15 02:18:10,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:10,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:18:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:11,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:11,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:18:11,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-15 02:18:11,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:11,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:11,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-15 02:18:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:11,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:11,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:12,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:12,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:18:12,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-15 02:18:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:12,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4974 backedges. 1596 proven. 3192 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-15 02:18:12,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060246573] [2020-10-15 02:18:12,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:12,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 02:18:12,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437576403] [2020-10-15 02:18:12,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 02:18:12,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:12,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 02:18:12,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:18:12,599 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand 23 states. [2020-10-15 02:18:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:13,224 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2020-10-15 02:18:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 02:18:13,225 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 203 [2020-10-15 02:18:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:13,226 INFO L225 Difference]: With dead ends: 158 [2020-10-15 02:18:13,226 INFO L226 Difference]: Without dead ends: 85 [2020-10-15 02:18:13,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 02:18:13,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-15 02:18:13,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-15 02:18:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 02:18:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-10-15 02:18:13,237 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 203 [2020-10-15 02:18:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:13,237 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-10-15 02:18:13,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 02:18:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-10-15 02:18:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:18:13,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:13,239 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:13,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 02:18:13,240 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:13,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1421498314, now seen corresponding path program 20 times [2020-10-15 02:18:13,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:13,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025465135] [2020-10-15 02:18:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:13,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:14,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:18,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:18,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:18:18,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:18:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-15 02:18:18,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:18,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-15 02:18:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-15 02:18:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:18,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:18,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:18,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:18,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:18,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:18,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:18,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:18,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:18,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:19,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:19,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:19,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1272 [2020-10-15 02:18:19,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:19,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:18:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:18:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:20,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:18:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:21,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:21,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:21,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:21,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-10-15 02:18:21,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:21,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:18:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:18:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:18:21,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:18:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:23,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:23,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:23,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-15 02:18:23,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:23,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:18:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:18:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 5310 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-15 02:18:23,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025465135] [2020-10-15 02:18:23,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:23,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 02:18:23,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211900940] [2020-10-15 02:18:23,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 02:18:23,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:23,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 02:18:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:18:23,403 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 31 states. [2020-10-15 02:18:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:27,516 INFO L93 Difference]: Finished difference Result 552 states and 824 transitions. [2020-10-15 02:18:27,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 02:18:27,517 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 212 [2020-10-15 02:18:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:27,521 INFO L225 Difference]: With dead ends: 552 [2020-10-15 02:18:27,522 INFO L226 Difference]: Without dead ends: 548 [2020-10-15 02:18:27,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=164, Invalid=2916, Unknown=0, NotChecked=0, Total=3080 [2020-10-15 02:18:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-10-15 02:18:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 475. [2020-10-15 02:18:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-15 02:18:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 646 transitions. [2020-10-15 02:18:27,591 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 646 transitions. Word has length 212 [2020-10-15 02:18:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:27,592 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 646 transitions. [2020-10-15 02:18:27,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 02:18:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 646 transitions. [2020-10-15 02:18:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:18:27,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:27,597 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:27,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 02:18:27,598 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:27,598 INFO L82 PathProgramCache]: Analyzing trace with hash -741439944, now seen corresponding path program 1 times [2020-10-15 02:18:27,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:27,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519312278] [2020-10-15 02:18:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:28,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:29,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:32,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:32,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:18:32,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:18:32,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 02:18:32,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:32,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:18:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:18:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-15 02:18:32,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:32,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:32,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:32,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:32,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:32,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:32,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:32,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:18:32,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:34,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:34,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:34,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:34,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1549 [2020-10-15 02:18:34,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:34,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:18:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:34,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:18:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:34,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:34,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:34,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:34,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:34,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-15 02:18:34,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:34,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:18:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:18:34,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:18:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:36,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:36,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:36,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:36,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-10-15 02:18:36,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:36,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:18:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:18:36,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 1244 proven. 2641 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2020-10-15 02:18:36,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519312278] [2020-10-15 02:18:36,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:36,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 02:18:36,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170768470] [2020-10-15 02:18:36,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 02:18:36,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:36,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 02:18:36,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:18:36,665 INFO L87 Difference]: Start difference. First operand 475 states and 646 transitions. Second operand 16 states. [2020-10-15 02:18:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:38,307 INFO L93 Difference]: Finished difference Result 1755 states and 2315 transitions. [2020-10-15 02:18:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 02:18:38,310 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 212 [2020-10-15 02:18:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:38,324 INFO L225 Difference]: With dead ends: 1755 [2020-10-15 02:18:38,325 INFO L226 Difference]: Without dead ends: 1365 [2020-10-15 02:18:38,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=313, Invalid=1409, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 02:18:38,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-10-15 02:18:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 983. [2020-10-15 02:18:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-10-15 02:18:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1383 transitions. [2020-10-15 02:18:38,435 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1383 transitions. Word has length 212 [2020-10-15 02:18:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:38,436 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1383 transitions. [2020-10-15 02:18:38,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 02:18:38,436 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1383 transitions. [2020-10-15 02:18:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:18:38,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:38,457 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:38,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 02:18:38,457 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:38,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:38,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1163332876, now seen corresponding path program 2 times [2020-10-15 02:18:38,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:38,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708841563] [2020-10-15 02:18:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:39,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:40,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:43,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:43,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:18:43,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:18:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-15 02:18:43,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:43,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-15 02:18:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:18:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-15 02:18:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:43,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:43,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:43,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:43,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:43,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:43,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:43,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:43,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:43,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:44,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:47,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:47,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:47,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:18:47,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4208 [2020-10-15 02:18:47,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:47,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:18:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:47,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:18:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:48,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:51,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:51,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:51,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:51,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3348 [2020-10-15 02:18:51,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:51,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:18:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:18:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:18:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:53,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:53,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:53,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:53,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2342 [2020-10-15 02:18:53,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:53,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:53,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:18:53,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:53,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:18:53,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 1244 proven. 1704 refuted. 0 times theorem prover too weak. 2557 trivial. 0 not checked. [2020-10-15 02:18:54,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708841563] [2020-10-15 02:18:54,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:54,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 02:18:54,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207536048] [2020-10-15 02:18:54,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 02:18:54,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:54,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 02:18:54,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:18:54,007 INFO L87 Difference]: Start difference. First operand 983 states and 1383 transitions. Second operand 16 states. [2020-10-15 02:18:56,668 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-15 02:18:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:57,709 INFO L93 Difference]: Finished difference Result 5621 states and 7443 transitions. [2020-10-15 02:18:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 02:18:57,711 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 212 [2020-10-15 02:18:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:57,747 INFO L225 Difference]: With dead ends: 5621 [2020-10-15 02:18:57,748 INFO L226 Difference]: Without dead ends: 4655 [2020-10-15 02:18:57,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=426, Invalid=1926, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 02:18:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4655 states. [2020-10-15 02:18:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4655 to 2282. [2020-10-15 02:18:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-10-15 02:18:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3267 transitions. [2020-10-15 02:18:58,067 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3267 transitions. Word has length 212 [2020-10-15 02:18:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:58,068 INFO L479 AbstractCegarLoop]: Abstraction has 2282 states and 3267 transitions. [2020-10-15 02:18:58,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 02:18:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3267 transitions. [2020-10-15 02:18:58,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:18:58,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:58,103 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:58,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 02:18:58,103 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:58,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:58,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1593605304, now seen corresponding path program 3 times [2020-10-15 02:18:58,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:58,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942324251] [2020-10-15 02:18:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:58,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:59,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:59,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:02,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:02,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:03,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:03,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:19:03,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:19:03,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 02:19:03,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:03,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:19:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:19:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-15 02:19:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:19:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:03,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:03,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:03,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:03,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:03,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:03,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:03,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:03,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:03,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:08,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:08,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:19:08,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:08,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 02:19:08,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:08,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:19:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:19:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:08,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:19:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:08,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:09,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:13,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:13,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:19:13,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:19:13,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:19:13,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:13,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:19:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:19:13,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:19:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:16,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:16,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:19:16,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2683 [2020-10-15 02:19:16,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:16,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:19:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:19:16,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 1244 proven. 1915 refuted. 0 times theorem prover too weak. 2346 trivial. 0 not checked. [2020-10-15 02:19:16,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942324251] [2020-10-15 02:19:16,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:16,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 02:19:16,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619979153] [2020-10-15 02:19:16,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 02:19:16,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 02:19:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-15 02:19:16,487 INFO L87 Difference]: Start difference. First operand 2282 states and 3267 transitions. Second operand 18 states. [2020-10-15 02:19:23,679 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-15 02:19:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:25,312 INFO L93 Difference]: Finished difference Result 18172 states and 23765 transitions. [2020-10-15 02:19:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-15 02:19:25,313 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 212 [2020-10-15 02:19:25,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:25,432 INFO L225 Difference]: With dead ends: 18172 [2020-10-15 02:19:25,432 INFO L226 Difference]: Without dead ends: 15925 [2020-10-15 02:19:25,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2403 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1026, Invalid=7164, Unknown=0, NotChecked=0, Total=8190 [2020-10-15 02:19:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15925 states. [2020-10-15 02:19:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15925 to 5580. [2020-10-15 02:19:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5580 states. [2020-10-15 02:19:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5580 states to 5580 states and 8065 transitions. [2020-10-15 02:19:26,459 INFO L78 Accepts]: Start accepts. Automaton has 5580 states and 8065 transitions. Word has length 212 [2020-10-15 02:19:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:26,460 INFO L479 AbstractCegarLoop]: Abstraction has 5580 states and 8065 transitions. [2020-10-15 02:19:26,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 02:19:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5580 states and 8065 transitions. [2020-10-15 02:19:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:19:26,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:26,530 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:26,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 02:19:26,530 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:26,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 879324276, now seen corresponding path program 4 times [2020-10-15 02:19:26,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:26,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642596433] [2020-10-15 02:19:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:26,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:26,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:28,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:31,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:31,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:19:31,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:19:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5174 [2020-10-15 02:19:31,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:31,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:19:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:19:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-15 02:19:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:31,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:31,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:31,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:31,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:31,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:31,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:31,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:31,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:32,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:32,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:36,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:36,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:19:36,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:19:36,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:19:36,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:36,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:19:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:19:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:37,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:19:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:37,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:37,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:37,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:42,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:42,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:19:42,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:19:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 02:19:42,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:42,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:19:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:19:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:19:42,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:19:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:42,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:45,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:45,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:19:45,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:45,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3541 [2020-10-15 02:19:45,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:45,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:19:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:19:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 1244 proven. 2114 refuted. 0 times theorem prover too weak. 2147 trivial. 0 not checked. [2020-10-15 02:19:45,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642596433] [2020-10-15 02:19:45,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:45,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 02:19:45,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047680427] [2020-10-15 02:19:45,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 02:19:45,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:45,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 02:19:45,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-15 02:19:45,992 INFO L87 Difference]: Start difference. First operand 5580 states and 8065 transitions. Second operand 20 states.