/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/Problem16_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:16:25,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:16:25,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:16:25,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:16:25,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:16:25,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:16:25,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:16:25,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:16:25,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:16:25,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:16:25,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:16:25,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:16:25,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:16:25,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:16:25,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:16:25,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:16:25,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:16:25,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:16:25,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:16:25,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:16:25,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:16:25,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:16:25,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:16:25,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:16:25,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:16:25,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:16:25,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:16:25,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:16:25,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:16:25,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:16:25,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:16:25,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:16:25,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:16:25,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:16:25,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:16:25,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:16:25,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:16:25,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:16:25,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:16:25,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:16:25,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:16:25,881 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 09:16:25,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:16:25,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:16:25,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:16:25,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:16:25,905 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:16:25,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:16:25,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:16:25,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:16:25,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:16:25,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:16:25,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:16:25,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:16:25,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:16:25,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:16:25,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:16:25,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:16:25,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:16:25,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:16:25,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:16:25,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:16:25,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:16:25,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:16:25,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:16:25,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:16:25,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:16:25,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:16:25,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:16:25,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:16:25,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:16:25,909 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 09:16:26,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:16:26,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:16:26,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:16:26,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:16:26,274 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:16:26,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label15.c [2020-10-13 09:16:26,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d8ddb0c9/23ad40029e1e4f289b5b6f1b3cfaffef/FLAG4ec95b4f2 [2020-10-13 09:16:27,023 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:16:27,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label15.c [2020-10-13 09:16:27,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d8ddb0c9/23ad40029e1e4f289b5b6f1b3cfaffef/FLAG4ec95b4f2 [2020-10-13 09:16:27,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d8ddb0c9/23ad40029e1e4f289b5b6f1b3cfaffef [2020-10-13 09:16:27,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:16:27,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:16:27,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:16:27,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:16:27,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:16:27,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:27" (1/1) ... [2020-10-13 09:16:27,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:27, skipping insertion in model container [2020-10-13 09:16:27,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:27" (1/1) ... [2020-10-13 09:16:27,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:16:27,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:16:28,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:16:28,201 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:16:28,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:16:28,543 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:16:28,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28 WrapperNode [2020-10-13 09:16:28,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:16:28,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:16:28,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:16:28,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:16:28,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28" (1/1) ... [2020-10-13 09:16:28,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28" (1/1) ... [2020-10-13 09:16:28,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28" (1/1) ... [2020-10-13 09:16:28,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28" (1/1) ... [2020-10-13 09:16:28,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28" (1/1) ... [2020-10-13 09:16:28,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28" (1/1) ... [2020-10-13 09:16:28,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28" (1/1) ... [2020-10-13 09:16:28,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:16:28,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:16:28,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:16:28,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:16:28,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28" (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 09:16:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:16:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:16:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:16:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:16:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:16:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:16:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:16:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:16:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:16:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:16:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:16:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:16:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:16:33,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:16:33,244 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:16:33,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:33 BoogieIcfgContainer [2020-10-13 09:16:33,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:16:33,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:16:33,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:16:33,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:16:33,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:27" (1/3) ... [2020-10-13 09:16:33,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a843ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:33, skipping insertion in model container [2020-10-13 09:16:33,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:28" (2/3) ... [2020-10-13 09:16:33,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a843ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:33, skipping insertion in model container [2020-10-13 09:16:33,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:33" (3/3) ... [2020-10-13 09:16:33,273 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label15.c [2020-10-13 09:16:33,285 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:16:33,297 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:16:33,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:16:33,343 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:16:33,344 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:16:33,344 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:16:33,344 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:16:33,344 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:16:33,344 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:16:33,344 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:16:33,345 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:16:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:16:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 09:16:33,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:33,395 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] [2020-10-13 09:16:33,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:33,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1980245419, now seen corresponding path program 1 times [2020-10-13 09:16:33,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:33,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581369696] [2020-10-13 09:16:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:33,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:33,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:33,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 09:16:33,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:33,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-13 09:16:33,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:33,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:16:33,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:16:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:16:33,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:16:34,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:34,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:34,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:34,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:34,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:34,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:16:34,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:16:34,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:34,096 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 09:16:34,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581369696] [2020-10-13 09:16:34,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:16:34,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:16:34,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787680901] [2020-10-13 09:16:34,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:16:34,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:34,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:16:34,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:16:34,124 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:16:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:38,324 INFO L93 Difference]: Finished difference Result 1169 states and 2165 transitions. [2020-10-13 09:16:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:16:38,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-13 09:16:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:38,348 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 09:16:38,348 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:16:38,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:16:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:16:38,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-13 09:16:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-13 09:16:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1077 transitions. [2020-10-13 09:16:38,453 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1077 transitions. Word has length 28 [2020-10-13 09:16:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:38,454 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1077 transitions. [2020-10-13 09:16:38,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:16:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1077 transitions. [2020-10-13 09:16:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 09:16:38,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:38,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:16:38,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:16:38,460 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:38,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2132414141, now seen corresponding path program 1 times [2020-10-13 09:16:38,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:38,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226510966] [2020-10-13 09:16:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:38,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:39,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:16:39,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:16:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-13 09:16:39,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:16:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:16:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:16:39,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:39,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:39,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:39,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:16:39,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:16:39,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:39,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:16:39,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:39,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:16:39,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:16:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:16:39,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226510966] [2020-10-13 09:16:39,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:39,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:16:39,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44228176] [2020-10-13 09:16:39,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:16:39,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:39,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:16:39,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:16:39,644 INFO L87 Difference]: Start difference. First operand 689 states and 1077 transitions. Second operand 6 states. [2020-10-13 09:16:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:45,291 INFO L93 Difference]: Finished difference Result 2741 states and 4344 transitions. [2020-10-13 09:16:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:16:45,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-13 09:16:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:45,309 INFO L225 Difference]: With dead ends: 2741 [2020-10-13 09:16:45,310 INFO L226 Difference]: Without dead ends: 2058 [2020-10-13 09:16:45,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:16:45,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2020-10-13 09:16:45,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2054. [2020-10-13 09:16:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-10-13 09:16:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2930 transitions. [2020-10-13 09:16:45,384 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2930 transitions. Word has length 103 [2020-10-13 09:16:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:45,384 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2930 transitions. [2020-10-13 09:16:45,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:16:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2930 transitions. [2020-10-13 09:16:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-13 09:16:45,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:45,397 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 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 09:16:45,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:16:45,397 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:45,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:45,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1878078447, now seen corresponding path program 1 times [2020-10-13 09:16:45,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:45,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910965051] [2020-10-13 09:16:45,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:45,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:45,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:45,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:48,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:50,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 09:16:50,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:16:50,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:16:50,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-13 09:16:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:16:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:50,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:50,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:16:50,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:50,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:50,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:50,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:16:50,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:16:50,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:50,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:16:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:50,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:16:50,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:16:50,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:50,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:16:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:16:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:16:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:16:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 66 proven. 3 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-13 09:16:50,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910965051] [2020-10-13 09:16:50,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:50,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:16:50,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792236216] [2020-10-13 09:16:50,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:16:50,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:50,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:16:50,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:16:50,905 INFO L87 Difference]: Start difference. First operand 2054 states and 2930 transitions. Second operand 5 states. [2020-10-13 09:16:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:55,541 INFO L93 Difference]: Finished difference Result 5129 states and 7534 transitions. [2020-10-13 09:16:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:16:55,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-13 09:16:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:55,584 INFO L225 Difference]: With dead ends: 5129 [2020-10-13 09:16:55,584 INFO L226 Difference]: Without dead ends: 3081 [2020-10-13 09:16:55,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 09:16:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-10-13 09:16:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 3077. [2020-10-13 09:16:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-10-13 09:16:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4322 transitions. [2020-10-13 09:16:55,695 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4322 transitions. Word has length 265 [2020-10-13 09:16:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:55,697 INFO L479 AbstractCegarLoop]: Abstraction has 3077 states and 4322 transitions. [2020-10-13 09:16:55,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:16:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4322 transitions. [2020-10-13 09:16:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-13 09:16:55,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:55,707 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:16:55,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:16:55,708 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:55,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1893408621, now seen corresponding path program 1 times [2020-10-13 09:16:55,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:55,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530443898] [2020-10-13 09:16:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:55,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:59,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:59,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 09:16:59,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:16:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3247 [2020-10-13 09:16:59,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-13 09:16:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:16:59,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:16:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:59,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:59,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:59,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:16:59,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:59,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:59,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:59,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:59,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:16:59,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:16:59,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:59,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:59,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:16:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:59,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:59,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:16:59,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 09:16:59,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-13 09:16:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 09:16:59,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530443898] [2020-10-13 09:16:59,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:59,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:16:59,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94523573] [2020-10-13 09:16:59,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:16:59,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:59,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:16:59,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:16:59,534 INFO L87 Difference]: Start difference. First operand 3077 states and 4322 transitions. Second operand 5 states. [2020-10-13 09:17:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:02,020 INFO L93 Difference]: Finished difference Result 6165 states and 8674 transitions. [2020-10-13 09:17:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:02,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2020-10-13 09:17:02,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:02,043 INFO L225 Difference]: With dead ends: 6165 [2020-10-13 09:17:02,043 INFO L226 Difference]: Without dead ends: 3081 [2020-10-13 09:17:02,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:17:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-10-13 09:17:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 3077. [2020-10-13 09:17:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-10-13 09:17:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4314 transitions. [2020-10-13 09:17:02,138 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4314 transitions. Word has length 294 [2020-10-13 09:17:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:02,139 INFO L479 AbstractCegarLoop]: Abstraction has 3077 states and 4314 transitions. [2020-10-13 09:17:02,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:17:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4314 transitions. [2020-10-13 09:17:02,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 09:17:02,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:02,148 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:02,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:17:02,149 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:02,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:02,149 INFO L82 PathProgramCache]: Analyzing trace with hash -616925082, now seen corresponding path program 1 times [2020-10-13 09:17:02,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:02,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231163142] [2020-10-13 09:17:02,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:02,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:07,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:07,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-13 09:17:07,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:17:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 09:17:07,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 326 [2020-10-13 09:17:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:17:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:07,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:07,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:07,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:07,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:17:07,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:07,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:07,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:17:07,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:07,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:17:07,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:07,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:07,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:17:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:07,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:17:07,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:17:07,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:07,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:17:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:07,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:07,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 09:17:07,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:17:07,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 09:17:07,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 66 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-13 09:17:07,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231163142] [2020-10-13 09:17:07,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:07,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:17:07,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765942734] [2020-10-13 09:17:07,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:17:07,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:07,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:17:07,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:07,711 INFO L87 Difference]: Start difference. First operand 3077 states and 4314 transitions. Second operand 5 states. [2020-10-13 09:17:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:10,547 INFO L93 Difference]: Finished difference Result 6161 states and 8652 transitions. [2020-10-13 09:17:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:10,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 340 [2020-10-13 09:17:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:10,561 INFO L225 Difference]: With dead ends: 6161 [2020-10-13 09:17:10,562 INFO L226 Difference]: Without dead ends: 3081 [2020-10-13 09:17:10,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 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 09:17:10,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2020-10-13 09:17:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 3077. [2020-10-13 09:17:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-10-13 09:17:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4308 transitions. [2020-10-13 09:17:10,642 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4308 transitions. Word has length 340 [2020-10-13 09:17:10,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:10,643 INFO L479 AbstractCegarLoop]: Abstraction has 3077 states and 4308 transitions. [2020-10-13 09:17:10,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:17:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4308 transitions. [2020-10-13 09:17:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-13 09:17:10,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:10,655 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 09:17:10,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:17:10,656 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:10,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:10,656 INFO L82 PathProgramCache]: Analyzing trace with hash -471483782, now seen corresponding path program 1 times [2020-10-13 09:17:10,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:10,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101159133] [2020-10-13 09:17:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:10,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:15,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-13 09:17:15,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:17:15,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:17:15,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:17:15,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-13 09:17:15,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:17:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:15,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:15,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:15,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:15,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:15,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:15,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:17:15,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:17:15,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:15,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:17:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:15,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:17:15,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:15,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:17:15,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:17:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:16,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:17:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:16,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:16,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:16,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:17:16,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 09:17:16,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:17:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:16,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:17:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:16,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:16,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:17:16,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:16,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 09:17:16,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:17:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:16,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 237 proven. 73 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-13 09:17:16,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101159133] [2020-10-13 09:17:16,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:16,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:16,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338083901] [2020-10-13 09:17:16,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:16,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:16,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:16,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:16,848 INFO L87 Difference]: Start difference. First operand 3077 states and 4308 transitions. Second operand 7 states. [2020-10-13 09:17:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:22,324 INFO L93 Difference]: Finished difference Result 6544 states and 9335 transitions. [2020-10-13 09:17:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:17:22,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 425 [2020-10-13 09:17:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:22,340 INFO L225 Difference]: With dead ends: 6544 [2020-10-13 09:17:22,340 INFO L226 Difference]: Without dead ends: 3134 [2020-10-13 09:17:22,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:17:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2020-10-13 09:17:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 3106. [2020-10-13 09:17:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2020-10-13 09:17:22,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 4359 transitions. [2020-10-13 09:17:22,423 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 4359 transitions. Word has length 425 [2020-10-13 09:17:22,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:22,424 INFO L479 AbstractCegarLoop]: Abstraction has 3106 states and 4359 transitions. [2020-10-13 09:17:22,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:22,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 4359 transitions. [2020-10-13 09:17:22,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-13 09:17:22,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:22,437 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:22,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:17:22,437 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:22,444 INFO L82 PathProgramCache]: Analyzing trace with hash -910078265, now seen corresponding path program 1 times [2020-10-13 09:17:22,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:22,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150235494] [2020-10-13 09:17:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:22,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:26,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-13 09:17:27,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:17:27,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 09:17:27,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:17:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:17:27,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:27,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:27,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:27,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:17:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:17:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:17:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:17:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:17:27,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:27,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 09:17:27,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:17:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 09:17:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:17:27,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:27,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:17:27,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 09:17:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-13 09:17:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:28,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:28,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:28,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:17:28,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:28,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 09:17:28,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:17:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 172 proven. 153 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-10-13 09:17:28,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150235494] [2020-10-13 09:17:28,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:28,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:28,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958829765] [2020-10-13 09:17:28,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:28,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:28,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:28,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:28,393 INFO L87 Difference]: Start difference. First operand 3106 states and 4359 transitions. Second operand 7 states. [2020-10-13 09:17:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:34,301 INFO L93 Difference]: Finished difference Result 7363 states and 10490 transitions. [2020-10-13 09:17:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:17:34,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-13 09:17:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:34,327 INFO L225 Difference]: With dead ends: 7363 [2020-10-13 09:17:34,327 INFO L226 Difference]: Without dead ends: 4184 [2020-10-13 09:17:34,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:17:34,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2020-10-13 09:17:34,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 3109. [2020-10-13 09:17:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 09:17:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4058 transitions. [2020-10-13 09:17:34,451 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4058 transitions. Word has length 436 [2020-10-13 09:17:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:34,452 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4058 transitions. [2020-10-13 09:17:34,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4058 transitions. [2020-10-13 09:17:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-13 09:17:34,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:34,469 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:34,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:17:34,470 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:34,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:34,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1569295569, now seen corresponding path program 1 times [2020-10-13 09:17:34,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:34,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409349735] [2020-10-13 09:17:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:34,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:39,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:39,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-13 09:17:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:17:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 09:17:39,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:17:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:17:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:17:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:39,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:39,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:39,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:39,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:17:39,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:17:39,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:39,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:39,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:17:39,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:17:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:17:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:17:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:39,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:39,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:17:39,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 09:17:39,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:17:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:39,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-13 09:17:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:39,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:39,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:39,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:17:39,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:17:39,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 09:17:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-13 09:17:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:17:40,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:17:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:17:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 172 proven. 153 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-13 09:17:40,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409349735] [2020-10-13 09:17:40,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:40,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:40,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692090434] [2020-10-13 09:17:40,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:40,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:40,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:40,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:40,161 INFO L87 Difference]: Start difference. First operand 3109 states and 4058 transitions. Second operand 7 states. [2020-10-13 09:17:44,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:44,455 INFO L93 Difference]: Finished difference Result 6576 states and 8595 transitions. [2020-10-13 09:17:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:17:44,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 456 [2020-10-13 09:17:44,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:44,470 INFO L225 Difference]: With dead ends: 6576 [2020-10-13 09:17:44,470 INFO L226 Difference]: Without dead ends: 3120 [2020-10-13 09:17:44,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:17:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-10-13 09:17:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 3102. [2020-10-13 09:17:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3102 states. [2020-10-13 09:17:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 3638 transitions. [2020-10-13 09:17:44,542 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 3638 transitions. Word has length 456 [2020-10-13 09:17:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:44,543 INFO L479 AbstractCegarLoop]: Abstraction has 3102 states and 3638 transitions. [2020-10-13 09:17:44,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 3638 transitions. [2020-10-13 09:17:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-13 09:17:44,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:44,556 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 09:17:44,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:17:44,556 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:44,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:44,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2044402085, now seen corresponding path program 1 times [2020-10-13 09:17:44,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:44,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294881110] [2020-10-13 09:17:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:47,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:49,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-13 09:17:49,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:17:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 09:17:49,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-10-13 09:17:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:17:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:49,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:49,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:49,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:49,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:49,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:17:49,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:17:49,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:49,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:17:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:49,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:17:49,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:17:49,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 09:17:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:49,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-13 09:17:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:49,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:17:49,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:49,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:17:49,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:17:49,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-13 09:17:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:49,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:17:49,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:17:49,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:17:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 239 proven. 73 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-10-13 09:17:50,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294881110] [2020-10-13 09:17:50,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:50,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:50,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386374518] [2020-10-13 09:17:50,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:50,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:50,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:50,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:50,117 INFO L87 Difference]: Start difference. First operand 3102 states and 3638 transitions. Second operand 7 states. [2020-10-13 09:17:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:53,389 INFO L93 Difference]: Finished difference Result 7256 states and 8632 transitions. [2020-10-13 09:17:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:17:53,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-13 09:17:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:53,410 INFO L225 Difference]: With dead ends: 7256 [2020-10-13 09:17:53,410 INFO L226 Difference]: Without dead ends: 4160 [2020-10-13 09:17:53,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:17:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2020-10-13 09:17:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 4144. [2020-10-13 09:17:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4144 states. [2020-10-13 09:17:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 4894 transitions. [2020-10-13 09:17:53,515 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 4894 transitions. Word has length 506 [2020-10-13 09:17:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:53,515 INFO L479 AbstractCegarLoop]: Abstraction has 4144 states and 4894 transitions. [2020-10-13 09:17:53,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 4894 transitions. [2020-10-13 09:17:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-13 09:17:53,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:53,535 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:17:53,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:17:53,536 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:53,536 INFO L82 PathProgramCache]: Analyzing trace with hash 756629229, now seen corresponding path program 1 times [2020-10-13 09:17:53,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:53,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818166901] [2020-10-13 09:17:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:58,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-13 09:17:58,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:17:58,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:17:58,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 09:17:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:17:58,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:58,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:58,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:58,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:58,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:58,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:58,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:58,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:17:58,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:17:58,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:17:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:58,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:17:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:58,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:17:58,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:17:58,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:17:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:58,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:17:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:58,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:17:58,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:17:58,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:17:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:58,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:58,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:17:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:58,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:17:58,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:58,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:17:58,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 09:17:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:58,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-13 09:17:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:59,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:59,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:17:59,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:59,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:17:59,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:17:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 184 proven. 203 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-13 09:17:59,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818166901] [2020-10-13 09:17:59,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:59,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:59,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105121893] [2020-10-13 09:17:59,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:59,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:59,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:59,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:59,262 INFO L87 Difference]: Start difference. First operand 4144 states and 4894 transitions. Second operand 7 states. [2020-10-13 09:18:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:02,457 INFO L93 Difference]: Finished difference Result 9676 states and 11423 transitions. [2020-10-13 09:18:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:18:02,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 547 [2020-10-13 09:18:02,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:02,478 INFO L225 Difference]: With dead ends: 9676 [2020-10-13 09:18:02,478 INFO L226 Difference]: Without dead ends: 5538 [2020-10-13 09:18:02,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2020-10-13 09:18:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5170. [2020-10-13 09:18:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5170 states. [2020-10-13 09:18:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 5934 transitions. [2020-10-13 09:18:02,589 INFO L78 Accepts]: Start accepts. Automaton has 5170 states and 5934 transitions. Word has length 547 [2020-10-13 09:18:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:02,590 INFO L479 AbstractCegarLoop]: Abstraction has 5170 states and 5934 transitions. [2020-10-13 09:18:02,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5170 states and 5934 transitions. [2020-10-13 09:18:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2020-10-13 09:18:02,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:02,605 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:18:02,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:18:02,606 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:02,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:02,606 INFO L82 PathProgramCache]: Analyzing trace with hash -797327177, now seen corresponding path program 1 times [2020-10-13 09:18:02,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:02,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295575030] [2020-10-13 09:18:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:02,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:07,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:07,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 09:18:07,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:18:07,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:18:07,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 430 [2020-10-13 09:18:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:18:07,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:07,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:07,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:07,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:07,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:18:07,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:07,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:07,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:07,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:07,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:18:07,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:18:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:07,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:18:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:07,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:07,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:07,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:18:07,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:18:07,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:07,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 09:18:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:07,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:07,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:18:07,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:07,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:18:07,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:07,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:07,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-13 09:18:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:08,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:08,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:18:08,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:08,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:18:08,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:08,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:18:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:08,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-13 09:18:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:08,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:08,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:18:08,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:18:08,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:18:08,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-13 09:18:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:08,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:08,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:18:08,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:18:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:18:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 437 proven. 73 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-13 09:18:08,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295575030] [2020-10-13 09:18:08,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:08,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:08,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569207330] [2020-10-13 09:18:08,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:08,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:08,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:08,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:08,467 INFO L87 Difference]: Start difference. First operand 5170 states and 5934 transitions. Second operand 7 states. [2020-10-13 09:18:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:11,754 INFO L93 Difference]: Finished difference Result 11720 states and 13568 transitions. [2020-10-13 09:18:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:18:11,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 676 [2020-10-13 09:18:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:11,782 INFO L225 Difference]: With dead ends: 11720 [2020-10-13 09:18:11,782 INFO L226 Difference]: Without dead ends: 6556 [2020-10-13 09:18:11,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:11,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2020-10-13 09:18:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 6542. [2020-10-13 09:18:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6542 states. [2020-10-13 09:18:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6542 states to 6542 states and 7557 transitions. [2020-10-13 09:18:11,917 INFO L78 Accepts]: Start accepts. Automaton has 6542 states and 7557 transitions. Word has length 676 [2020-10-13 09:18:11,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:11,917 INFO L479 AbstractCegarLoop]: Abstraction has 6542 states and 7557 transitions. [2020-10-13 09:18:11,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:11,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6542 states and 7557 transitions. [2020-10-13 09:18:11,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-13 09:18:11,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:11,938 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:11,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:18:11,939 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:11,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:11,939 INFO L82 PathProgramCache]: Analyzing trace with hash -459309088, now seen corresponding path program 1 times [2020-10-13 09:18:11,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:11,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261233175] [2020-10-13 09:18:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:12,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:17,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-13 09:18:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:18:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 09:18:17,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:18:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:18:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:17,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:17,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:17,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:18:17,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:17,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:17,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:18:17,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:18:17,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:18:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:18:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:17,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:17,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:18:17,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:17,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:18:17,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:17,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:18:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:17,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-13 09:18:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:17,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:18:17,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:18:17,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:18:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:17,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-13 09:18:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:17,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:18:17,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:17,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:18:17,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:18:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-10-13 09:18:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:17,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:18:17,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:18:17,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:18:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 184 proven. 203 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2020-10-13 09:18:18,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261233175] [2020-10-13 09:18:18,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:18,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:18,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111473296] [2020-10-13 09:18:18,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:18,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:18,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:18,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:18,021 INFO L87 Difference]: Start difference. First operand 6542 states and 7557 transitions. Second operand 7 states. [2020-10-13 09:18:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:22,662 INFO L93 Difference]: Finished difference Result 19019 states and 23437 transitions. [2020-10-13 09:18:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:18:22,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 810 [2020-10-13 09:18:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:22,711 INFO L225 Difference]: With dead ends: 19019 [2020-10-13 09:18:22,711 INFO L226 Difference]: Without dead ends: 12483 [2020-10-13 09:18:22,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12483 states. [2020-10-13 09:18:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12483 to 12335. [2020-10-13 09:18:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12335 states. [2020-10-13 09:18:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12335 states to 12335 states and 14403 transitions. [2020-10-13 09:18:23,034 INFO L78 Accepts]: Start accepts. Automaton has 12335 states and 14403 transitions. Word has length 810 [2020-10-13 09:18:23,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:23,034 INFO L479 AbstractCegarLoop]: Abstraction has 12335 states and 14403 transitions. [2020-10-13 09:18:23,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:23,035 INFO L276 IsEmpty]: Start isEmpty. Operand 12335 states and 14403 transitions. [2020-10-13 09:18:23,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2020-10-13 09:18:23,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:23,073 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:23,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:18:23,074 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:23,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:23,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1275681924, now seen corresponding path program 1 times [2020-10-13 09:18:23,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:23,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012547501] [2020-10-13 09:18:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:28,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 890 [2020-10-13 09:18:28,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:18:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 09:18:28,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:18:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 09:18:28,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:28,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:28,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:28,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:18:28,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:28,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:28,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:18:28,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:18:28,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:18:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:28,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:18:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:28,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:18:28,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:18:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 09:18:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:28,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-13 09:18:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:28,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:18:28,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:18:28,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:18:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:18:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:28,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:18:28,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:28,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:18:28,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:28,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:28,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:18:28,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:28,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:28,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-13 09:18:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:28,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:18:28,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:28,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:18:28,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:18:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:28,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 246 proven. 372 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2020-10-13 09:18:29,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012547501] [2020-10-13 09:18:29,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:29,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:29,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849316569] [2020-10-13 09:18:29,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:29,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:29,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:29,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:29,294 INFO L87 Difference]: Start difference. First operand 12335 states and 14403 transitions. Second operand 7 states. [2020-10-13 09:18:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:33,462 INFO L93 Difference]: Finished difference Result 24571 states and 30442 transitions. [2020-10-13 09:18:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:18:33,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 872 [2020-10-13 09:18:33,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:33,521 INFO L225 Difference]: With dead ends: 24571 [2020-10-13 09:18:33,522 INFO L226 Difference]: Without dead ends: 12579 [2020-10-13 09:18:33,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12579 states. [2020-10-13 09:18:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12579 to 12004. [2020-10-13 09:18:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12004 states. [2020-10-13 09:18:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12004 states to 12004 states and 13761 transitions. [2020-10-13 09:18:33,863 INFO L78 Accepts]: Start accepts. Automaton has 12004 states and 13761 transitions. Word has length 872 [2020-10-13 09:18:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:33,864 INFO L479 AbstractCegarLoop]: Abstraction has 12004 states and 13761 transitions. [2020-10-13 09:18:33,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 12004 states and 13761 transitions. [2020-10-13 09:18:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-10-13 09:18:33,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:33,896 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:33,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:18:33,896 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:33,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1107201180, now seen corresponding path program 1 times [2020-10-13 09:18:33,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:33,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113931479] [2020-10-13 09:18:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 899 [2020-10-13 09:18:39,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:18:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 09:18:39,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 330 [2020-10-13 09:18:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:18:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:39,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:39,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:18:39,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:18:39,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:18:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:18:39,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:18:39,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-13 09:18:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:18:39,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:18:39,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:18:39,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-13 09:18:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:18:39,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:18:39,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:18:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-10-13 09:18:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:18:39,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:18:39,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:18:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-13 09:18:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:18:39,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:18:39,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:18:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1604 backedges. 288 proven. 203 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2020-10-13 09:18:40,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113931479] [2020-10-13 09:18:40,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:40,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:18:40,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415659309] [2020-10-13 09:18:40,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:18:40,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:40,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:18:40,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:18:40,089 INFO L87 Difference]: Start difference. First operand 12004 states and 13761 transitions. Second operand 8 states. [2020-10-13 09:18:45,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:45,087 INFO L93 Difference]: Finished difference Result 23677 states and 27193 transitions. [2020-10-13 09:18:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:18:45,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 879 [2020-10-13 09:18:45,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:45,114 INFO L225 Difference]: With dead ends: 23677 [2020-10-13 09:18:45,115 INFO L226 Difference]: Without dead ends: 12016 [2020-10-13 09:18:45,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-13 09:18:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2020-10-13 09:18:45,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 11671. [2020-10-13 09:18:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11671 states. [2020-10-13 09:18:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11671 states to 11671 states and 12668 transitions. [2020-10-13 09:18:45,325 INFO L78 Accepts]: Start accepts. Automaton has 11671 states and 12668 transitions. Word has length 879 [2020-10-13 09:18:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:45,326 INFO L479 AbstractCegarLoop]: Abstraction has 11671 states and 12668 transitions. [2020-10-13 09:18:45,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:18:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 11671 states and 12668 transitions. [2020-10-13 09:18:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2020-10-13 09:18:45,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:45,361 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-13 09:18:45,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:18:45,362 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:45,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:45,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1530884592, now seen corresponding path program 1 times [2020-10-13 09:18:45,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:45,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220252722] [2020-10-13 09:18:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:45,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:46,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:50,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:50,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 929 [2020-10-13 09:18:50,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:18:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:18:50,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:18:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:18:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:50,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:50,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:50,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:50,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:50,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:50,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:50,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:50,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:18:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:18:50,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:18:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:50,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:18:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:50,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:50,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:50,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:18:50,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:50,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:18:50,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:18:50,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-13 09:18:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:50,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:50,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:50,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:18:50,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:18:50,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:18:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-13 09:18:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:50,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:51,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:18:51,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:18:51,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:18:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:51,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:51,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-13 09:18:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:51,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:51,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:18:51,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:18:51,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:18:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:51,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:51,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2020-10-13 09:18:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:18:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:18:51,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:18:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 208 proven. 266 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2020-10-13 09:18:51,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220252722] [2020-10-13 09:18:51,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:51,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:51,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126612834] [2020-10-13 09:18:51,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:51,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:51,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:51,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:51,647 INFO L87 Difference]: Start difference. First operand 11671 states and 12668 transitions. Second operand 7 states. [2020-10-13 09:18:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:57,596 INFO L93 Difference]: Finished difference Result 26220 states and 29192 transitions. [2020-10-13 09:18:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:18:57,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 909 [2020-10-13 09:18:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:57,635 INFO L225 Difference]: With dead ends: 26220 [2020-10-13 09:18:57,636 INFO L226 Difference]: Without dead ends: 14892 [2020-10-13 09:18:57,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:18:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14892 states. [2020-10-13 09:18:57,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14892 to 14724. [2020-10-13 09:18:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14724 states. [2020-10-13 09:18:57,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14724 states to 14724 states and 15933 transitions. [2020-10-13 09:18:57,903 INFO L78 Accepts]: Start accepts. Automaton has 14724 states and 15933 transitions. Word has length 909 [2020-10-13 09:18:57,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:57,904 INFO L479 AbstractCegarLoop]: Abstraction has 14724 states and 15933 transitions. [2020-10-13 09:18:57,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:57,904 INFO L276 IsEmpty]: Start isEmpty. Operand 14724 states and 15933 transitions. [2020-10-13 09:18:57,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-13 09:18:57,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:57,927 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:18:57,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:18:57,927 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:57,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:57,928 INFO L82 PathProgramCache]: Analyzing trace with hash -173285734, now seen corresponding path program 1 times [2020-10-13 09:18:57,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:57,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22214047] [2020-10-13 09:18:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:58,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:58,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 974 [2020-10-13 09:19:03,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:19:03,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-13 09:19:03,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:19:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:19:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:19:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:03,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:03,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:19:03,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:19:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:19:03,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 09:19:03,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:19:03,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:03,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:19:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:19:03,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:19:03,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:19:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:03,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-13 09:19:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:03,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:19:03,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:19:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:03,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-13 09:19:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:19:03,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:19:03,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-13 09:19:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:03,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:19:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-13 09:19:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:19:03,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:19:03,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:19:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:03,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-10-13 09:19:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:19:03,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:19:03,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:19:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-10-13 09:19:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:04,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:19:04,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:04,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:19:04,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:19:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:04,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 147 proven. 540 refuted. 0 times theorem prover too weak. 1709 trivial. 0 not checked. [2020-10-13 09:19:04,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22214047] [2020-10-13 09:19:04,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:04,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:04,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551756304] [2020-10-13 09:19:04,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:04,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:04,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:04,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:04,729 INFO L87 Difference]: Start difference. First operand 14724 states and 15933 transitions. Second operand 7 states. [2020-10-13 09:19:08,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:08,231 INFO L93 Difference]: Finished difference Result 29023 states and 32390 transitions. [2020-10-13 09:19:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:19:08,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 952 [2020-10-13 09:19:08,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:08,275 INFO L225 Difference]: With dead ends: 29023 [2020-10-13 09:19:08,275 INFO L226 Difference]: Without dead ends: 14983 [2020-10-13 09:19:08,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:19:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14983 states. [2020-10-13 09:19:08,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14983 to 14729. [2020-10-13 09:19:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14729 states. [2020-10-13 09:19:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14729 states to 14729 states and 15931 transitions. [2020-10-13 09:19:08,581 INFO L78 Accepts]: Start accepts. Automaton has 14729 states and 15931 transitions. Word has length 952 [2020-10-13 09:19:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:08,581 INFO L479 AbstractCegarLoop]: Abstraction has 14729 states and 15931 transitions. [2020-10-13 09:19:08,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:08,582 INFO L276 IsEmpty]: Start isEmpty. Operand 14729 states and 15931 transitions. [2020-10-13 09:19:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2020-10-13 09:19:08,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:08,609 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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] [2020-10-13 09:19:08,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:19:08,609 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:08,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:08,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1904242743, now seen corresponding path program 1 times [2020-10-13 09:19:08,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:08,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678398487] [2020-10-13 09:19:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:09,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:13,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:13,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1113 [2020-10-13 09:19:13,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:19:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 09:19:13,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:13,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 616 [2020-10-13 09:19:13,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:19:13,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:14,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:14,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:14,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:14,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:14,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:14,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:14,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:14,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:14,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:14,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:19:14,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:14,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:19:14,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:14,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:19:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:14,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:14,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:19:14,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:14,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:19:14,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:14,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:14,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:19:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:14,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:14,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:14,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:14,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:19:14,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:19:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:14,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:14,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:14,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:19:14,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:19:14,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:19:14,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-13 09:19:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:14,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:19:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-13 09:19:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:14,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:14,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:19:14,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:14,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:19:14,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:19:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-13 09:19:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:14,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:14,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:14,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:19:14,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:19:14,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:14,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:14,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:19:14,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2650 backedges. 597 proven. 226 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2020-10-13 09:19:15,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678398487] [2020-10-13 09:19:15,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:15,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:15,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862091199] [2020-10-13 09:19:15,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:15,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:15,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:15,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:15,260 INFO L87 Difference]: Start difference. First operand 14729 states and 15931 transitions. Second operand 7 states. [2020-10-13 09:19:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:19,545 INFO L93 Difference]: Finished difference Result 31493 states and 34148 transitions. [2020-10-13 09:19:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:19:19,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1091 [2020-10-13 09:19:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:19,580 INFO L225 Difference]: With dead ends: 31493 [2020-10-13 09:19:19,580 INFO L226 Difference]: Without dead ends: 17455 [2020-10-13 09:19:19,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:19:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17455 states. [2020-10-13 09:19:19,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17455 to 17445. [2020-10-13 09:19:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17445 states. [2020-10-13 09:19:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17445 states to 17445 states and 18813 transitions. [2020-10-13 09:19:19,849 INFO L78 Accepts]: Start accepts. Automaton has 17445 states and 18813 transitions. Word has length 1091 [2020-10-13 09:19:19,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:19,849 INFO L479 AbstractCegarLoop]: Abstraction has 17445 states and 18813 transitions. [2020-10-13 09:19:19,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand 17445 states and 18813 transitions. [2020-10-13 09:19:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1185 [2020-10-13 09:19:19,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:19,880 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:19:19,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:19:19,880 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:19,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1688776952, now seen corresponding path program 1 times [2020-10-13 09:19:19,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:19,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395117086] [2020-10-13 09:19:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1206 [2020-10-13 09:19:25,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 09:19:25,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 741 [2020-10-13 09:19:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:19:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:25,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:25,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:19:25,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:19:25,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:25,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:25,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:25,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:19:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:19:25,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:19:25,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:25,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:19:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:25,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:19:25,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:19:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:25,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:19:25,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:25,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:25,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 09:19:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:19:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:19:25,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:19:25,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:19:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 816 [2020-10-13 09:19:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:19:25,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:19:25,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:19:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:25,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2020-10-13 09:19:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:19:25,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:19:25,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:19:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 514 proven. 162 refuted. 0 times theorem prover too weak. 2311 trivial. 0 not checked. [2020-10-13 09:19:26,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395117086] [2020-10-13 09:19:26,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:26,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:26,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843021170] [2020-10-13 09:19:26,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:26,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:26,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:26,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:26,562 INFO L87 Difference]: Start difference. First operand 17445 states and 18813 transitions. Second operand 7 states. [2020-10-13 09:19:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:30,849 INFO L93 Difference]: Finished difference Result 37269 states and 40427 transitions. [2020-10-13 09:19:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:30,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1184 [2020-10-13 09:19:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:30,882 INFO L225 Difference]: With dead ends: 37269 [2020-10-13 09:19:30,882 INFO L226 Difference]: Without dead ends: 20515 [2020-10-13 09:19:30,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20515 states. [2020-10-13 09:19:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20515 to 20168. [2020-10-13 09:19:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20168 states. [2020-10-13 09:19:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20168 states to 20168 states and 21742 transitions. [2020-10-13 09:19:31,188 INFO L78 Accepts]: Start accepts. Automaton has 20168 states and 21742 transitions. Word has length 1184 [2020-10-13 09:19:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:31,189 INFO L479 AbstractCegarLoop]: Abstraction has 20168 states and 21742 transitions. [2020-10-13 09:19:31,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 20168 states and 21742 transitions. [2020-10-13 09:19:31,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1191 [2020-10-13 09:19:31,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:31,218 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:31,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:19:31,218 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:31,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:31,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1317921337, now seen corresponding path program 1 times [2020-10-13 09:19:31,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:31,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186470632] [2020-10-13 09:19:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1214 [2020-10-13 09:19:36,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:36,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 09:19:36,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 544 [2020-10-13 09:19:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:19:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:36,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:36,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:19:36,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:19:36,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:36,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:19:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:19:36,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:19:36,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:19:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:36,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:19:36,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:19:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:19:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:19:36,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:19:36,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:19:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-13 09:19:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:19:36,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:19:36,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:19:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-13 09:19:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:37,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:37,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:19:37,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:19:37,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:19:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:37,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 822 [2020-10-13 09:19:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:37,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:37,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:37,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:19:37,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:19:37,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:19:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:37,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1010 [2020-10-13 09:19:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:37,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:37,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:37,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:19:37,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:19:37,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:19:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 424 proven. 266 refuted. 0 times theorem prover too weak. 2600 trivial. 0 not checked. [2020-10-13 09:19:38,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186470632] [2020-10-13 09:19:38,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:38,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:38,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393304821] [2020-10-13 09:19:38,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:38,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:38,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:38,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:38,668 INFO L87 Difference]: Start difference. First operand 20168 states and 21742 transitions. Second operand 7 states. [2020-10-13 09:19:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:42,842 INFO L93 Difference]: Finished difference Result 39986 states and 43148 transitions. [2020-10-13 09:19:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:19:42,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1190 [2020-10-13 09:19:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:42,882 INFO L225 Difference]: With dead ends: 39986 [2020-10-13 09:19:42,882 INFO L226 Difference]: Without dead ends: 20511 [2020-10-13 09:19:42,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:19:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20511 states. [2020-10-13 09:19:43,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20511 to 20166. [2020-10-13 09:19:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20166 states. [2020-10-13 09:19:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20166 states to 20166 states and 21728 transitions. [2020-10-13 09:19:43,280 INFO L78 Accepts]: Start accepts. Automaton has 20166 states and 21728 transitions. Word has length 1190 [2020-10-13 09:19:43,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:43,281 INFO L479 AbstractCegarLoop]: Abstraction has 20166 states and 21728 transitions. [2020-10-13 09:19:43,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:43,281 INFO L276 IsEmpty]: Start isEmpty. Operand 20166 states and 21728 transitions. [2020-10-13 09:19:43,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1232 [2020-10-13 09:19:43,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:43,314 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:43,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:19:43,314 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:43,315 INFO L82 PathProgramCache]: Analyzing trace with hash -934914516, now seen corresponding path program 1 times [2020-10-13 09:19:43,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:43,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991376235] [2020-10-13 09:19:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1251 [2020-10-13 09:19:48,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:48,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:19:48,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1061 [2020-10-13 09:19:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:19:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:48,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:48,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:19:48,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:19:48,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:19:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:19:48,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:19:48,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:19:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:19:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:19:48,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:49,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:19:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:49,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:49,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:49,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:19:49,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:19:49,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:49,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 863 [2020-10-13 09:19:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:49,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:49,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:19:49,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:19:49,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-13 09:19:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:49,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1051 [2020-10-13 09:19:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:49,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:19:49,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:19:49,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 09:19:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2488 backedges. 854 proven. 2 refuted. 0 times theorem prover too weak. 1632 trivial. 0 not checked. [2020-10-13 09:19:50,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991376235] [2020-10-13 09:19:50,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:50,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:50,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618597401] [2020-10-13 09:19:50,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:50,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:50,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:50,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:50,243 INFO L87 Difference]: Start difference. First operand 20166 states and 21728 transitions. Second operand 7 states. [2020-10-13 09:19:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:56,139 INFO L93 Difference]: Finished difference Result 43700 states and 47242 transitions. [2020-10-13 09:19:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:19:56,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1231 [2020-10-13 09:19:56,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:56,177 INFO L225 Difference]: With dead ends: 43700 [2020-10-13 09:19:56,177 INFO L226 Difference]: Without dead ends: 24227 [2020-10-13 09:19:56,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:19:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24227 states. [2020-10-13 09:19:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24227 to 22179. [2020-10-13 09:19:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22179 states. [2020-10-13 09:19:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22179 states to 22179 states and 23429 transitions. [2020-10-13 09:19:56,478 INFO L78 Accepts]: Start accepts. Automaton has 22179 states and 23429 transitions. Word has length 1231 [2020-10-13 09:19:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:56,478 INFO L479 AbstractCegarLoop]: Abstraction has 22179 states and 23429 transitions. [2020-10-13 09:19:56,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 22179 states and 23429 transitions. [2020-10-13 09:19:56,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1604 [2020-10-13 09:19:56,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:56,514 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:56,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:19:56,514 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:56,515 INFO L82 PathProgramCache]: Analyzing trace with hash 153776360, now seen corresponding path program 1 times [2020-10-13 09:19:56,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:56,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387022920] [2020-10-13 09:19:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:01,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:01,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1627 [2020-10-13 09:20:01,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:20:01,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 09:20:01,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:20:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:20:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:01,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:01,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:01,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:01,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:01,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:01,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:01,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:02,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:02,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:20:02,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:02,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:20:02,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:20:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:02,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:20:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:02,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:02,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:20:02,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:20:02,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:20:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:02,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:20:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:02,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:02,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:20:02,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:20:02,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:20:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:20:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:02,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:02,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:20:02,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:20:02,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:20:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:02,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:02,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:20:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:02,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:02,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:02,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:02,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:20:02,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:20:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:02,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:02,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:20:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:02,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:02,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:20:02,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:02,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:20:02,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:20:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:02,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1258 [2020-10-13 09:20:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:02,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:02,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:20:02,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:20:02,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:20:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1423 [2020-10-13 09:20:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 09:20:03,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:20:03,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:20:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0