/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:32:18,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:32:18,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:32:18,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:32:18,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:32:18,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:32:18,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:32:18,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:32:18,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:32:18,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:32:18,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:32:18,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:32:18,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:32:18,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:32:18,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:32:18,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:32:18,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:32:18,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:32:18,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:32:18,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:32:18,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:32:18,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:32:18,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:32:18,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:32:18,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:32:18,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:32:18,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:32:18,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:32:18,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:32:18,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:32:18,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:32:18,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:32:18,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:32:18,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:32:18,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:32:18,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:32:18,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:32:18,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:32:18,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:32:18,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:32:18,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:32:18,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:32:18,430 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:32:18,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:32:18,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:32:18,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:32:18,433 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:32:18,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:32:18,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:32:18,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:32:18,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:32:18,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:32:18,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:32:18,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:32:18,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:32:18,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:32:18,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:32:18,437 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:32:18,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:32:18,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:32:18,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:32:18,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:32:18,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:32:18,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:32:18,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:32:18,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:32:18,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:32:18,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:32:18,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:32:18,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:32:18,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:32:18,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:32:18,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:32:18,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:32:18,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:32:18,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:32:18,834 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:32:18,835 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label26.c [2020-10-13 09:32:18,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/591ffb017/7956b54137b341e9a99292cf6dde565a/FLAGa0a354144 [2020-10-13 09:32:19,683 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:32:19,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label26.c [2020-10-13 09:32:19,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/591ffb017/7956b54137b341e9a99292cf6dde565a/FLAGa0a354144 [2020-10-13 09:32:19,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/591ffb017/7956b54137b341e9a99292cf6dde565a [2020-10-13 09:32:19,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:32:19,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:32:19,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:32:19,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:32:19,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:32:19,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:32:19" (1/1) ... [2020-10-13 09:32:19,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9440c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:19, skipping insertion in model container [2020-10-13 09:32:19,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:32:19" (1/1) ... [2020-10-13 09:32:19,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:32:19,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:32:21,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:32:21,313 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:32:21,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:32:21,885 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:32:21,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21 WrapperNode [2020-10-13 09:32:21,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:32:21,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:32:21,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:32:21,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:32:21,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21" (1/1) ... [2020-10-13 09:32:21,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21" (1/1) ... [2020-10-13 09:32:21,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21" (1/1) ... [2020-10-13 09:32:21,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21" (1/1) ... [2020-10-13 09:32:22,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21" (1/1) ... [2020-10-13 09:32:22,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21" (1/1) ... [2020-10-13 09:32:22,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21" (1/1) ... [2020-10-13 09:32:22,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:32:22,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:32:22,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:32:22,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:32:22,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:32:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:32:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:32:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:32:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:32:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:32:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:32:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:32:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:32:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:32:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:32:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:32:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:32:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:32:31,886 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:32:31,886 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:32:31,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:32:31 BoogieIcfgContainer [2020-10-13 09:32:31,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:32:31,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:32:31,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:32:31,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:32:31,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:32:19" (1/3) ... [2020-10-13 09:32:31,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc64b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:32:31, skipping insertion in model container [2020-10-13 09:32:31,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:32:21" (2/3) ... [2020-10-13 09:32:31,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc64b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:32:31, skipping insertion in model container [2020-10-13 09:32:31,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:32:31" (3/3) ... [2020-10-13 09:32:31,908 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label26.c [2020-10-13 09:32:31,923 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:32:31,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:32:31,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:32:31,989 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:32:31,989 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:32:31,989 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:32:31,989 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:32:31,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:32:31,990 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:32:31,990 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:32:31,990 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:32:32,038 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:32:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 09:32:32,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:32,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:32,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash 323584841, now seen corresponding path program 1 times [2020-10-13 09:32:32,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:32,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151477790] [2020-10-13 09:32:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:32,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:32,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 09:32:32,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-13 09:32:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:32:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:32:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 09:32:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:32:32,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:32,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:32,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:32,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:32,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:32:32,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:32:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:32,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151477790] [2020-10-13 09:32:32,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:32:32,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:32:32,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235692907] [2020-10-13 09:32:32,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:32:32,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:32,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:32:32,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:32:32,903 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:32:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:44,030 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-13 09:32:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:44,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-13 09:32:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:44,066 INFO L225 Difference]: With dead ends: 1689 [2020-10-13 09:32:44,066 INFO L226 Difference]: Without dead ends: 1009 [2020-10-13 09:32:44,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-13 09:32:44,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-13 09:32:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-13 09:32:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-13 09:32:44,229 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 34 [2020-10-13 09:32:44,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:44,230 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-13 09:32:44,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:32:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-13 09:32:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 09:32:44,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:44,237 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:44,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:32:44,238 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:44,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:44,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1454055508, now seen corresponding path program 1 times [2020-10-13 09:32:44,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:44,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235112625] [2020-10-13 09:32:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:44,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:45,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:45,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 09:32:45,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:32:45,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-13 09:32:45,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:45,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:32:45,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:32:45,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:32:45,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:45,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:45,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:45,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:45,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:32:45,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:45,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:45,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:45,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:45,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:45,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:45,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:32:45,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:45,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 09:32:45,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:32:45,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:46,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235112625] [2020-10-13 09:32:46,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:46,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:46,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463000441] [2020-10-13 09:32:46,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:46,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:46,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:46,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:46,033 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-13 09:33:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:01,298 INFO L93 Difference]: Finished difference Result 2864 states and 4440 transitions. [2020-10-13 09:33:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:01,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 09:33:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:01,312 INFO L225 Difference]: With dead ends: 2864 [2020-10-13 09:33:01,312 INFO L226 Difference]: Without dead ends: 1879 [2020-10-13 09:33:01,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-10-13 09:33:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1875. [2020-10-13 09:33:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-13 09:33:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2566 transitions. [2020-10-13 09:33:01,418 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2566 transitions. Word has length 105 [2020-10-13 09:33:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:01,422 INFO L479 AbstractCegarLoop]: Abstraction has 1875 states and 2566 transitions. [2020-10-13 09:33:01,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2566 transitions. [2020-10-13 09:33:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 09:33:01,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:01,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:01,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:33:01,437 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:01,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:01,438 INFO L82 PathProgramCache]: Analyzing trace with hash 325063520, now seen corresponding path program 1 times [2020-10-13 09:33:01,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:01,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470686742] [2020-10-13 09:33:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:02,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:02,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 09:33:02,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:02,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-13 09:33:02,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:33:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:33:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:02,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:02,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:02,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:02,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:33:02,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:02,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:02,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:33:02,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:02,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 09:33:02,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:33:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:02,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470686742] [2020-10-13 09:33:02,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:02,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:02,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301520776] [2020-10-13 09:33:02,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:02,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:02,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:02,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:02,528 INFO L87 Difference]: Start difference. First operand 1875 states and 2566 transitions. Second operand 5 states. [2020-10-13 09:33:20,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:20,781 INFO L93 Difference]: Finished difference Result 3755 states and 5473 transitions. [2020-10-13 09:33:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:20,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 09:33:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:20,803 INFO L225 Difference]: With dead ends: 3755 [2020-10-13 09:33:20,803 INFO L226 Difference]: Without dead ends: 2772 [2020-10-13 09:33:20,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:20,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2020-10-13 09:33:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2766. [2020-10-13 09:33:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2020-10-13 09:33:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3640 transitions. [2020-10-13 09:33:20,899 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3640 transitions. Word has length 108 [2020-10-13 09:33:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:20,900 INFO L479 AbstractCegarLoop]: Abstraction has 2766 states and 3640 transitions. [2020-10-13 09:33:20,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3640 transitions. [2020-10-13 09:33:20,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 09:33:20,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:20,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:20,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:33:20,904 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:20,905 INFO L82 PathProgramCache]: Analyzing trace with hash -914176444, now seen corresponding path program 1 times [2020-10-13 09:33:20,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:20,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124030827] [2020-10-13 09:33:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:22,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:22,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:33:22,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:33:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1366 [2020-10-13 09:33:22,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:33:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:33:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:22,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:22,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:22,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:33:22,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:22,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:22,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:33:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:22,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:22,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:33:22,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 09:33:22,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:33:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:22,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124030827] [2020-10-13 09:33:22,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:22,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:22,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154527666] [2020-10-13 09:33:22,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:22,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:22,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:22,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:22,756 INFO L87 Difference]: Start difference. First operand 2766 states and 3640 transitions. Second operand 5 states. [2020-10-13 09:33:40,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:40,392 INFO L93 Difference]: Finished difference Result 5545 states and 7664 transitions. [2020-10-13 09:33:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:40,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 09:33:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:40,423 INFO L225 Difference]: With dead ends: 5545 [2020-10-13 09:33:40,423 INFO L226 Difference]: Without dead ends: 3671 [2020-10-13 09:33:40,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:40,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2020-10-13 09:33:40,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3664. [2020-10-13 09:33:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3664 states. [2020-10-13 09:33:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 4702 transitions. [2020-10-13 09:33:40,554 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 4702 transitions. Word has length 113 [2020-10-13 09:33:40,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:40,555 INFO L479 AbstractCegarLoop]: Abstraction has 3664 states and 4702 transitions. [2020-10-13 09:33:40,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:40,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 4702 transitions. [2020-10-13 09:33:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 09:33:40,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:40,562 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:40,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:33:40,562 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:40,563 INFO L82 PathProgramCache]: Analyzing trace with hash 230321664, now seen corresponding path program 1 times [2020-10-13 09:33:40,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:40,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413656170] [2020-10-13 09:33:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:41,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:41,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 09:33:41,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:33:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1312 [2020-10-13 09:33:41,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:33:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:33:41,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:42,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:42,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:42,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:42,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:42,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:42,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:33:42,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:42,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:42,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:42,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:42,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:33:42,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-13 09:33:42,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:33:42,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:42,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413656170] [2020-10-13 09:33:42,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:42,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:42,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052984283] [2020-10-13 09:33:42,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:42,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:42,422 INFO L87 Difference]: Start difference. First operand 3664 states and 4702 transitions. Second operand 5 states. [2020-10-13 09:34:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:01,525 INFO L93 Difference]: Finished difference Result 7341 states and 9790 transitions. [2020-10-13 09:34:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:01,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 09:34:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:01,563 INFO L225 Difference]: With dead ends: 7341 [2020-10-13 09:34:01,563 INFO L226 Difference]: Without dead ends: 4569 [2020-10-13 09:34:01,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4569 states. [2020-10-13 09:34:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4569 to 4554. [2020-10-13 09:34:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4554 states. [2020-10-13 09:34:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 5747 transitions. [2020-10-13 09:34:01,756 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 5747 transitions. Word has length 131 [2020-10-13 09:34:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:01,757 INFO L479 AbstractCegarLoop]: Abstraction has 4554 states and 5747 transitions. [2020-10-13 09:34:01,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 5747 transitions. [2020-10-13 09:34:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 09:34:01,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:01,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:01,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:34:01,762 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:01,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash -948432520, now seen corresponding path program 1 times [2020-10-13 09:34:01,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:01,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111182243] [2020-10-13 09:34:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:01,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:03,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:06,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:06,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:34:06,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:34:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:34:06,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 09:34:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:34:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:06,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:06,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:06,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:34:06,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:06,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:06,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:06,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:06,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:07,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:07,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:07,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:34:07,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:07,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:34:07,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:34:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:07,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111182243] [2020-10-13 09:34:07,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:07,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:07,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412311717] [2020-10-13 09:34:07,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:07,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:07,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:07,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:07,191 INFO L87 Difference]: Start difference. First operand 4554 states and 5747 transitions. Second operand 5 states. [2020-10-13 09:34:22,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:22,332 INFO L93 Difference]: Finished difference Result 10440 states and 13580 transitions. [2020-10-13 09:34:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:22,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-13 09:34:22,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:22,369 INFO L225 Difference]: With dead ends: 10440 [2020-10-13 09:34:22,369 INFO L226 Difference]: Without dead ends: 5892 [2020-10-13 09:34:22,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2020-10-13 09:34:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5879. [2020-10-13 09:34:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5879 states. [2020-10-13 09:34:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 7441 transitions. [2020-10-13 09:34:22,656 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 7441 transitions. Word has length 135 [2020-10-13 09:34:22,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:22,657 INFO L479 AbstractCegarLoop]: Abstraction has 5879 states and 7441 transitions. [2020-10-13 09:34:22,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:22,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 7441 transitions. [2020-10-13 09:34:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 09:34:22,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:22,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:22,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:34:22,663 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:22,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1357885877, now seen corresponding path program 1 times [2020-10-13 09:34:22,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:22,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763113109] [2020-10-13 09:34:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:24,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:24,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 09:34:24,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:34:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1715 [2020-10-13 09:34:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 09:34:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:34:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:24,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:24,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:24,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:24,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:24,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:24,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:34:24,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:24,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:34:24,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 09:34:24,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:34:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:24,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763113109] [2020-10-13 09:34:24,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:24,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:24,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355681560] [2020-10-13 09:34:24,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:24,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:24,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:24,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:24,913 INFO L87 Difference]: Start difference. First operand 5879 states and 7441 transitions. Second operand 5 states. [2020-10-13 09:34:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:38,826 INFO L93 Difference]: Finished difference Result 17076 states and 22064 transitions. [2020-10-13 09:34:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:38,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 09:34:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:38,885 INFO L225 Difference]: With dead ends: 17076 [2020-10-13 09:34:38,885 INFO L226 Difference]: Without dead ends: 11203 [2020-10-13 09:34:38,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:38,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11203 states. [2020-10-13 09:34:39,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11203 to 11174. [2020-10-13 09:34:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11174 states. [2020-10-13 09:34:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11174 states to 11174 states and 14117 transitions. [2020-10-13 09:34:39,146 INFO L78 Accepts]: Start accepts. Automaton has 11174 states and 14117 transitions. Word has length 149 [2020-10-13 09:34:39,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:39,146 INFO L479 AbstractCegarLoop]: Abstraction has 11174 states and 14117 transitions. [2020-10-13 09:34:39,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand 11174 states and 14117 transitions. [2020-10-13 09:34:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 09:34:39,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:39,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:39,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:34:39,152 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:39,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1030662104, now seen corresponding path program 1 times [2020-10-13 09:34:39,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:39,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949320982] [2020-10-13 09:34:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:39,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:40,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:44,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:44,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:44,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-13 09:34:44,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:34:44,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:34:44,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:34:44,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:34:44,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:44,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:44,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:44,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:44,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:44,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:34:44,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:44,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:44,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:44,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:44,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:34:44,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:34:44,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:44,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:44,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:34:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:44,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:44,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:44,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:34:44,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:34:44,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:34:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:34:44,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949320982] [2020-10-13 09:34:44,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:44,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:44,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330696740] [2020-10-13 09:34:44,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:44,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:44,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:44,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:44,625 INFO L87 Difference]: Start difference. First operand 11174 states and 14117 transitions. Second operand 5 states. [2020-10-13 09:35:01,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:01,287 INFO L93 Difference]: Finished difference Result 29751 states and 38757 transitions. [2020-10-13 09:35:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:01,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-13 09:35:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:01,368 INFO L225 Difference]: With dead ends: 29751 [2020-10-13 09:35:01,368 INFO L226 Difference]: Without dead ends: 20786 [2020-10-13 09:35:01,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20786 states. [2020-10-13 09:35:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20786 to 18176. [2020-10-13 09:35:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18176 states. [2020-10-13 09:35:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18176 states to 18176 states and 23770 transitions. [2020-10-13 09:35:01,814 INFO L78 Accepts]: Start accepts. Automaton has 18176 states and 23770 transitions. Word has length 194 [2020-10-13 09:35:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:01,815 INFO L479 AbstractCegarLoop]: Abstraction has 18176 states and 23770 transitions. [2020-10-13 09:35:01,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 18176 states and 23770 transitions. [2020-10-13 09:35:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 09:35:01,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:01,826 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:01,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:35:01,826 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:01,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:01,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1049203836, now seen corresponding path program 1 times [2020-10-13 09:35:01,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:01,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324106790] [2020-10-13 09:35:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:02,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:06,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-13 09:35:06,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:35:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:35:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-10-13 09:35:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:35:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:07,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:07,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:07,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:07,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:07,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:35:07,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:07,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:07,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:35:07,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:07,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:35:07,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:35:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:07,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:07,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 09:35:07,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:07,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 09:35:07,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:35:07,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:35:07,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324106790] [2020-10-13 09:35:07,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:07,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:07,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975425203] [2020-10-13 09:35:07,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:07,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:07,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:07,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:07,417 INFO L87 Difference]: Start difference. First operand 18176 states and 23770 transitions. Second operand 5 states. [2020-10-13 09:35:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:23,231 INFO L93 Difference]: Finished difference Result 36800 states and 49997 transitions. [2020-10-13 09:35:23,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:23,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-13 09:35:23,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:23,326 INFO L225 Difference]: With dead ends: 36800 [2020-10-13 09:35:23,326 INFO L226 Difference]: Without dead ends: 22581 [2020-10-13 09:35:23,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22581 states. [2020-10-13 09:35:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22581 to 22563. [2020-10-13 09:35:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22563 states. [2020-10-13 09:35:23,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22563 states to 22563 states and 29358 transitions. [2020-10-13 09:35:23,801 INFO L78 Accepts]: Start accepts. Automaton has 22563 states and 29358 transitions. Word has length 249 [2020-10-13 09:35:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:23,802 INFO L479 AbstractCegarLoop]: Abstraction has 22563 states and 29358 transitions. [2020-10-13 09:35:23,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22563 states and 29358 transitions. [2020-10-13 09:35:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-13 09:35:23,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:23,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:23,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:35:23,815 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash 175929828, now seen corresponding path program 1 times [2020-10-13 09:35:23,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:23,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072914928] [2020-10-13 09:35:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:25,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:25,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:26,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:28,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:28,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-13 09:35:28,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:35:28,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:35:28,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-10-13 09:35:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:35:28,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:28,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:28,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:28,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:28,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:28,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:35:28,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:28,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:29,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:29,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:35:29,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:29,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:35:29,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:29,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:29,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:35:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:29,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:29,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:35:29,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:29,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 09:35:29,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:35:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:35:29,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 09:35:29,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072914928] [2020-10-13 09:35:29,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:35:29,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:35:29,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144471550] [2020-10-13 09:35:29,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:29,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:29,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:29,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:29,471 INFO L87 Difference]: Start difference. First operand 22563 states and 29358 transitions. Second operand 5 states. [2020-10-13 09:35:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:52,587 INFO L93 Difference]: Finished difference Result 47300 states and 63772 transitions. [2020-10-13 09:35:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:52,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-13 09:35:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:52,705 INFO L225 Difference]: With dead ends: 47300 [2020-10-13 09:35:52,705 INFO L226 Difference]: Without dead ends: 28689 [2020-10-13 09:35:52,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:52,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28689 states. [2020-10-13 09:35:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28689 to 27384. [2020-10-13 09:35:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27384 states. [2020-10-13 09:35:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27384 states to 27384 states and 35369 transitions. [2020-10-13 09:35:53,556 INFO L78 Accepts]: Start accepts. Automaton has 27384 states and 35369 transitions. Word has length 269 [2020-10-13 09:35:53,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:53,557 INFO L479 AbstractCegarLoop]: Abstraction has 27384 states and 35369 transitions. [2020-10-13 09:35:53,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:53,557 INFO L276 IsEmpty]: Start isEmpty. Operand 27384 states and 35369 transitions. [2020-10-13 09:35:53,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-13 09:35:53,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:53,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:53,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:35:53,583 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2047769424, now seen corresponding path program 1 times [2020-10-13 09:35:53,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:53,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367017611] [2020-10-13 09:35:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:53,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:55,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:55,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-13 09:35:55,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-10-13 09:35:55,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:35:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:35:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 09:35:55,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:55,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:55,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:55,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:55,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:35:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:35:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:55,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:55,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:55,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:35:55,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-13 09:35:55,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:35:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:35:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:56,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 09:35:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:56,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:56,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:35:56,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:56,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:35:56,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:56,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 09:35:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:56,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 54 proven. 104 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:35:56,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367017611] [2020-10-13 09:35:56,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:56,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:35:56,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597037516] [2020-10-13 09:35:56,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:35:56,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:56,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:35:56,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:35:56,329 INFO L87 Difference]: Start difference. First operand 27384 states and 35369 transitions. Second operand 7 states.