/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_15x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:29:11,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:29:11,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:29:11,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:29:11,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:29:11,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:29:11,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:29:11,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:29:11,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:29:11,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:29:11,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:29:11,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:29:11,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:29:11,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:29:11,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:29:11,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:29:11,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:29:11,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:29:11,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:29:11,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:29:11,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:29:11,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:29:11,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:29:11,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:29:11,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:29:11,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:29:11,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:29:11,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:29:11,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:29:11,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:29:11,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:29:11,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:29:11,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:29:11,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:29:11,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:29:11,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:29:11,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:29:11,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:29:11,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:29:11,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:29:11,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:29:11,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:29:12,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:29:12,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:29:12,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:29:12,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:29:12,041 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:29:12,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:29:12,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:29:12,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:29:12,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:29:12,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:29:12,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:29:12,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:29:12,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:29:12,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:29:12,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:29:12,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:29:12,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:29:12,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:29:12,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:29:12,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:29:12,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:29:12,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:29:12,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:29:12,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:29:12,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:29:12,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:29:12,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:29:12,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:29:12,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:29:12,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:29:12,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:29:12,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:29:12,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:29:12,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:29:12,513 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:29:12,514 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-2.c [2020-09-25 05:29:12,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b84c59d/ec83db7e712c4f2e87b411b3900780b4/FLAG9c1f3cfe1 [2020-09-25 05:29:13,151 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:29:13,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_15x0-2.c [2020-09-25 05:29:13,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b84c59d/ec83db7e712c4f2e87b411b3900780b4/FLAG9c1f3cfe1 [2020-09-25 05:29:13,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b84c59d/ec83db7e712c4f2e87b411b3900780b4 [2020-09-25 05:29:13,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:29:13,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:29:13,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:29:13,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:29:13,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:29:13,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:29:13" (1/1) ... [2020-09-25 05:29:13,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13, skipping insertion in model container [2020-09-25 05:29:13,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:29:13" (1/1) ... [2020-09-25 05:29:13,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:29:13,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:29:13,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:29:13,769 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:29:13,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:29:13,808 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:29:13,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13 WrapperNode [2020-09-25 05:29:13,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:29:13,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:29:13,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:29:13,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:29:13,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13" (1/1) ... [2020-09-25 05:29:13,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13" (1/1) ... [2020-09-25 05:29:13,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13" (1/1) ... [2020-09-25 05:29:13,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13" (1/1) ... [2020-09-25 05:29:13,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13" (1/1) ... [2020-09-25 05:29:13,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13" (1/1) ... [2020-09-25 05:29:13,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13" (1/1) ... [2020-09-25 05:29:13,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:29:13,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:29:13,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:29:13,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:29:13,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:29:14,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:29:14,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:29:14,001 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 05:29:14,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:29:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:29:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 05:29:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:29:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:29:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:29:14,205 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:29:14,206 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:29:14,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:29:14 BoogieIcfgContainer [2020-09-25 05:29:14,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:29:14,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:29:14,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:29:14,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:29:14,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:29:13" (1/3) ... [2020-09-25 05:29:14,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73234926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:29:14, skipping insertion in model container [2020-09-25 05:29:14,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:13" (2/3) ... [2020-09-25 05:29:14,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73234926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:29:14, skipping insertion in model container [2020-09-25 05:29:14,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:29:14" (3/3) ... [2020-09-25 05:29:14,242 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_15x0-2.c [2020-09-25 05:29:14,271 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:29:14,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:29:14,324 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:29:14,356 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:29:14,356 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:29:14,356 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:29:14,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:29:14,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:29:14,357 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:29:14,357 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:29:14,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:29:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 05:29:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 05:29:14,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:14,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:14,392 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:14,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:14,398 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 05:29:14,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:14,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779835774] [2020-09-25 05:29:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:14,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:14,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:14,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:29:14,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:14,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 05:29:14,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:14,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:29:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:29:14,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:29:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:14,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:14,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:14,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:14,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:29:14,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:14,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:14,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:14,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:14,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:14,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:14,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 05:29:14,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:14,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:29:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:29:14,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:29:15,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779835774] [2020-09-25 05:29:15,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:29:15,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:29:15,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864924013] [2020-09-25 05:29:15,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:29:15,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:15,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:29:15,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:29:15,031 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 05:29:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:15,138 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 05:29:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:29:15,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 05:29:15,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:15,155 INFO L225 Difference]: With dead ends: 39 [2020-09-25 05:29:15,156 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 05:29:15,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:29:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 05:29:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 05:29:15,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 05:29:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 05:29:15,215 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 05:29:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:15,216 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 05:29:15,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:29:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 05:29:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:29:15,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:15,219 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:15,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:29:15,220 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:15,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:15,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 05:29:15,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:15,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45446001] [2020-09-25 05:29:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:15,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:15,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:29:15,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-09-25 05:29:15,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:15,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:29:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:29:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:29:15,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:15,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:15,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:29:15,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:15,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:15,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:29:15,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:15,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:15,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:15,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:15,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 05:29:15,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:15,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:29:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:29:15,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:16,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:16,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:16,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:16,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:29:16,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:16,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:29:16,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45446001] [2020-09-25 05:29:16,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:16,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:29:16,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277797446] [2020-09-25 05:29:16,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:29:16,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:16,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:29:16,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:29:16,113 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-09-25 05:29:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:16,201 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 05:29:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:29:16,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 05:29:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:16,203 INFO L225 Difference]: With dead ends: 36 [2020-09-25 05:29:16,203 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 05:29:16,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:29:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 05:29:16,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 05:29:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 05:29:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 05:29:16,212 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 05:29:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:16,213 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 05:29:16,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:29:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 05:29:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 05:29:16,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:16,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:16,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:29:16,215 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:16,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:16,215 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 05:29:16,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:16,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914009436] [2020-09-25 05:29:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:16,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:16,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:16,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:29:16,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-09-25 05:29:16,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:16,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:29:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:16,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:16,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:16,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:16,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:29:16,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:16,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:29:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:16,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:16,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:16,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 05:29:16,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:16,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:29:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:29:16,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:16,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:16,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:17,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:17,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:17,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 05:29:17,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:17,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:17,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:17,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:17,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:17,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:17,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:29:17,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:17,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:29:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 05:29:17,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914009436] [2020-09-25 05:29:17,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:17,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:29:17,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703199681] [2020-09-25 05:29:17,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:29:17,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:17,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:29:17,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:29:17,128 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 05:29:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:17,243 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 05:29:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:29:17,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 05:29:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:17,246 INFO L225 Difference]: With dead ends: 41 [2020-09-25 05:29:17,246 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 05:29:17,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:29:17,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 05:29:17,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 05:29:17,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 05:29:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 05:29:17,263 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 05:29:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:17,264 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 05:29:17,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:29:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 05:29:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 05:29:17,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:17,269 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:17,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:29:17,270 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 05:29:17,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:17,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987623969] [2020-09-25 05:29:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:17,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:18,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:18,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 05:29:18,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-09-25 05:29:18,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:18,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:29:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:29:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:18,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:18,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:18,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:18,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:18,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:18,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:18,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:18,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:18,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:18,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 05:29:18,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:18,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:29:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:29:18,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:18,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:18,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:18,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:18,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:18,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:18,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 05:29:18,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:18,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:18,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:18,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:18,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:18,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:18,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:18,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 05:29:18,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:18,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:18,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:18,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:18,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:18,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:18,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:18,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:18,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:29:18,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:18,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:18,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:18,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:18,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20 [2020-09-25 05:29:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 05:29:18,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987623969] [2020-09-25 05:29:18,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:18,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:29:18,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861494312] [2020-09-25 05:29:18,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:29:18,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:18,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:29:18,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:29:18,626 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 05:29:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:18,736 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 05:29:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:29:18,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 05:29:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:18,738 INFO L225 Difference]: With dead ends: 46 [2020-09-25 05:29:18,738 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 05:29:18,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:29:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 05:29:18,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 05:29:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 05:29:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 05:29:18,747 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 05:29:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:18,748 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 05:29:18,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:29:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 05:29:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:29:18,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:18,749 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:18,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:29:18,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:18,750 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 05:29:18,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:18,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308802406] [2020-09-25 05:29:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:18,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:20,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:20,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 05:29:20,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-09-25 05:29:20,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:20,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:29:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:29:20,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:20,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:20,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:20,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:20,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:20,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:29:20,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:20,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:20,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:20,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:29:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:21,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:21,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:21,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:21,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 05:29:21,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:21,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:21,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:29:21,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:21,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 05:29:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:21,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:21,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:21,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 05:29:21,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:21,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:21,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:21,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:21,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:21,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:21,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:21,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 05:29:21,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:21,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:21,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:29:21,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:21,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:21,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:21,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:21,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:29:21,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:21,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:21,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:21,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:21,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:21,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:21,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:21,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:21,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:29:21,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:21,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:21,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:21,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 05:29:21,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308802406] [2020-09-25 05:29:21,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:21,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:29:21,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477010646] [2020-09-25 05:29:21,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:29:21,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:21,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:29:21,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:29:21,620 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-09-25 05:29:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:21,733 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 05:29:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:29:21,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 05:29:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:21,737 INFO L225 Difference]: With dead ends: 51 [2020-09-25 05:29:21,737 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 05:29:21,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:29:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 05:29:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 05:29:21,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 05:29:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 05:29:21,749 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 05:29:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:21,750 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 05:29:21,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:29:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 05:29:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:29:21,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:21,753 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:21,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:29:21,754 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 05:29:21,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:21,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106393662] [2020-09-25 05:29:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:25,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:25,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 05:29:25,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4088 [2020-09-25 05:29:25,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:25,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:29:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:29:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:25,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:25,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:25,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:25,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:25,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:25,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:25,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:25,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:26,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:26,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:26,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:26,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 05:29:26,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:26,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:29:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:26,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 05:29:26,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:26,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:26,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:26,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 05:29:26,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:26,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:26,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:26,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:26,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:26,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:26,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 05:29:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:26,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:26,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:26,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:26,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:26,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:26,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:26,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 05:29:26,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:26,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:26,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:26,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:26,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:26,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:29:26,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:26,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:26,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:26,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:26,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:26,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:26,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:29:26,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:26,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:26,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:26,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:26,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 12 proven. 70 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 05:29:26,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106393662] [2020-09-25 05:29:26,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:26,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:29:26,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464422576] [2020-09-25 05:29:26,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:29:26,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:26,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:29:26,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:29:26,930 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 05:29:27,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:27,077 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 05:29:27,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:29:27,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 05:29:27,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:27,080 INFO L225 Difference]: With dead ends: 56 [2020-09-25 05:29:27,080 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 05:29:27,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:29:27,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 05:29:27,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 05:29:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:29:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 05:29:27,094 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 05:29:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:27,095 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 05:29:27,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:29:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 05:29:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 05:29:27,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:27,100 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:27,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:29:27,100 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:27,100 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 05:29:27,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:27,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741898864] [2020-09-25 05:29:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:27,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 05:29:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4092 [2020-09-25 05:29:31,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:31,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:29:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:29:31,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:31,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:31,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:31,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:31,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:31,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:31,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:31,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:31,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:31,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:31,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:31,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 05:29:31,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:31,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:31,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:29:31,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:31,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:29:31,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:31,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:31,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:31,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 05:29:31,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:31,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:29:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:31,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:32,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:32,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:32,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:32,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 05:29:32,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:32,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:32,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:32,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:32,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:32,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:32,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:32,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 05:29:32,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:32,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:32,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:32,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:32,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:32,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:32,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:32,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:32,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:32,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 05:29:32,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:32,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:32,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:32,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:32,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:29:32,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:32,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:32,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:32,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:32,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:32,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:32,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:29:32,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:32,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 05:29:32,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741898864] [2020-09-25 05:29:32,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:32,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:29:32,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944070840] [2020-09-25 05:29:32,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:29:32,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:32,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:29:32,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:29:32,616 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 05:29:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:32,766 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 05:29:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:29:32,767 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 05:29:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:32,769 INFO L225 Difference]: With dead ends: 61 [2020-09-25 05:29:32,771 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 05:29:32,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:29:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 05:29:32,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 05:29:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 05:29:32,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 05:29:32,784 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 05:29:32,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:32,786 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 05:29:32,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:29:32,787 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 05:29:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 05:29:32,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:32,790 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:32,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:29:32,791 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:32,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:32,792 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 05:29:32,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:32,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941245165] [2020-09-25 05:29:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:37,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:37,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:29:37,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:37,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:29:37,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:37,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 05:29:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:29:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:37,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:37,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:37,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:37,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:37,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:38,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:29:38,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-09-25 05:29:38,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:38,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 05:29:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 05:29:38,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:38,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:38,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:38,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:38,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:38,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-25 05:29:38,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:38,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:29:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:29:38,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:38,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:39,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 05:29:39,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:29:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:39,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:39,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 05:29:39,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:39,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 05:29:39,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:39,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 05:29:39,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:39,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:29:39,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:39,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:39,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:29:39,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:39,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 14 proven. 137 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 05:29:39,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941245165] [2020-09-25 05:29:39,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:39,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 05:29:39,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318462221] [2020-09-25 05:29:39,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 05:29:39,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:39,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 05:29:39,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:29:39,812 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 14 states. [2020-09-25 05:29:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:39,985 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 05:29:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:29:39,985 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-09-25 05:29:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:39,987 INFO L225 Difference]: With dead ends: 66 [2020-09-25 05:29:39,987 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:29:39,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462 [2020-09-25 05:29:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:29:40,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 05:29:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 05:29:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 05:29:40,006 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 05:29:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:40,007 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 05:29:40,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 05:29:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 05:29:40,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 05:29:40,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:40,010 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:40,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:29:40,010 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:40,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:40,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 05:29:40,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:40,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3933659] [2020-09-25 05:29:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:45,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:45,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 05:29:45,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:29:45,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:45,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 05:29:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:29:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:45,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:45,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:45,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:45,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:45,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:45,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:45,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:45,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:45,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:29:45,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:45,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-09-25 05:29:45,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:45,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 05:29:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:29:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:45,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:46,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:46,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:29:46,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-25 05:29:46,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:46,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:29:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:29:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:46,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:46,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:46,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:46,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 05:29:46,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:46,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:29:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:29:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:46,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:46,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:46,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:46,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 05:29:46,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:46,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:29:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 05:29:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:46,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:46,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:47,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:47,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 05:29:47,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:47,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:47,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:47,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:47,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:47,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:47,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:47,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:29:47,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:47,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:47,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:47,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:47,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:47,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:47,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:29:47,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:47,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:47,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:47,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:47,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:29:47,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:47,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 43 proven. 168 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-25 05:29:47,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3933659] [2020-09-25 05:29:47,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:47,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 05:29:47,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719972850] [2020-09-25 05:29:47,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 05:29:47,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:47,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 05:29:47,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:29:47,369 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states. [2020-09-25 05:29:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:47,519 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 05:29:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:29:47,519 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-09-25 05:29:47,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:47,521 INFO L225 Difference]: With dead ends: 71 [2020-09-25 05:29:47,521 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 05:29:47,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-25 05:29:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 05:29:47,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 05:29:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 05:29:47,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 05:29:47,528 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 05:29:47,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:47,529 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 05:29:47,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 05:29:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 05:29:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 05:29:47,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:47,530 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:47,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:29:47,531 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:47,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:47,531 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 05:29:47,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:47,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773656372] [2020-09-25 05:29:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:52,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:52,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 05:29:52,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:29:52,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:52,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:29:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:29:52,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:52,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:52,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:52,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:52,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:52,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:52,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:52,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:53,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:53,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 05:29:53,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-25 05:29:53,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:53,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:29:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 05:29:53,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:53,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:53,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:29:53,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 05:29:53,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:53,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 05:29:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:29:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:54,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:54,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:29:54,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-09-25 05:29:54,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:54,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:29:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:29:54,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:54,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:54,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:54,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:54,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:54,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 05:29:54,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:54,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:29:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:29:54,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:54,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:54,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:54,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:54,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 05:29:54,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:54,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:29:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:54,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:54,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:54,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:54,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 05:29:54,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:54,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:54,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:54,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:54,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:54,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:54,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:54,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:54,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 05:29:54,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:54,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:54,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:55,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:55,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:55,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:55,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 05:29:55,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:55,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:55,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:55,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:55,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:29:55,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:55,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:55,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:55,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:55,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:55,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:55,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:29:55,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:55,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:55,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 27 proven. 239 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-09-25 05:29:55,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773656372] [2020-09-25 05:29:55,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:55,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 05:29:55,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877656255] [2020-09-25 05:29:55,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 05:29:55,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:55,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 05:29:55,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:29:55,213 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 05:29:55,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:55,415 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 05:29:55,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:29:55,415 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 05:29:55,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:55,417 INFO L225 Difference]: With dead ends: 76 [2020-09-25 05:29:55,417 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 05:29:55,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 05:29:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 05:29:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 05:29:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 05:29:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 05:29:55,424 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 05:29:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:55,425 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 05:29:55,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 05:29:55,425 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 05:29:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 05:29:55,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:55,426 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:55,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:29:55,427 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 05:29:55,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:55,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200846404] [2020-09-25 05:29:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:55,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:55,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:00,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:00,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 05:30:00,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:30:00,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:00,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 05:30:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:30:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:30:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:00,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:00,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:00,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:00,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:00,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:00,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:00,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:00,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:00,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:00,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:00,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:30:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:01,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:01,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 05:30:01,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-09-25 05:30:01,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:01,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 05:30:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:30:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 05:30:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:01,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:01,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:01,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 05:30:01,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-25 05:30:01,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:01,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 05:30:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 05:30:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:02,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:02,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:30:02,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 05:30:02,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:02,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 05:30:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:30:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:02,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:02,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:02,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:02,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:30:02,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:02,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-09-25 05:30:02,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:02,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:02,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:30:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:30:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:02,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:03,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:03,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:30:03,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:03,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-09-25 05:30:03,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:03,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:30:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:30:03,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:03,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:03,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:03,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:30:03,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-25 05:30:03,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:03,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:03,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:30:03,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:03,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:30:03,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:03,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:03,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:30:03,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:03,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 05:30:03,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:03,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:30:03,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:03,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:30:03,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:03,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:04,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:04,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:30:04,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 05:30:04,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:04,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:30:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:30:04,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:04,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:04,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:30:04,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 05:30:04,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:04,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:30:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:30:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:04,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:04,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:04,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:30:04,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:30:04,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:04,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:30:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:30:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:04,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:04,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:30:04,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:30:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:04,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:30:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 57 proven. 265 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-09-25 05:30:04,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200846404] [2020-09-25 05:30:04,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:30:04,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:30:04,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556019120] [2020-09-25 05:30:04,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:30:04,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:30:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:30:04,365 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 05:30:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:04,573 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 05:30:04,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:30:04,574 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 05:30:04,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:04,576 INFO L225 Difference]: With dead ends: 81 [2020-09-25 05:30:04,576 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 05:30:04,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 05:30:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 05:30:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 05:30:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 05:30:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 05:30:04,585 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 05:30:04,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:04,586 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 05:30:04,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:30:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 05:30:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 05:30:04,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:04,587 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:04,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:30:04,588 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:04,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 05:30:04,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:04,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000711139] [2020-09-25 05:30:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking...