/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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:23:23,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:23:23,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:23:23,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:23:23,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:23:23,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:23:23,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:23:23,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:23:23,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:23:23,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:23:23,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:23:23,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:23:23,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:23:23,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:23:23,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:23:23,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:23:23,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:23:23,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:23:23,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:23:23,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:23:23,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:23:23,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:23:23,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:23:23,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:23:23,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:23:23,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:23:23,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:23:23,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:23:23,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:23:23,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:23:23,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:23:23,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:23:23,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:23:23,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:23:23,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:23:23,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:23:23,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:23:23,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:23:23,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:23:23,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:23:23,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:23:23,397 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 09:23:23,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:23:23,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:23:23,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:23:23,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:23:23,446 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:23:23,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:23:23,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:23:23,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:23:23,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:23:23,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:23:23,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:23:23,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:23:23,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:23:23,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:23:23,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:23:23,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:23:23,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:23:23,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:23:23,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:23:23,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:23:23,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:23:23,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:23:23,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:23:23,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:23:23,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:23:23,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:23:23,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:23:23,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:23:23,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:23:23,453 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 09:23:23,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:23:23,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:23:23,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:23:23,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:23:23,796 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:23:23,797 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45.c [2020-10-13 09:23:23,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8905ec001/42d4b7217d264bf38ef335d5e18c9f66/FLAGd1d4b47ac [2020-10-13 09:23:24,552 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:23:24,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label45.c [2020-10-13 09:23:24,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8905ec001/42d4b7217d264bf38ef335d5e18c9f66/FLAGd1d4b47ac [2020-10-13 09:23:24,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8905ec001/42d4b7217d264bf38ef335d5e18c9f66 [2020-10-13 09:23:24,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:23:24,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:23:24,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:23:24,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:23:24,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:23:24,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:24" (1/1) ... [2020-10-13 09:23:24,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24, skipping insertion in model container [2020-10-13 09:23:24,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:24" (1/1) ... [2020-10-13 09:23:24,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:23:24,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:23:25,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:23:25,696 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:23:25,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:23:25,974 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:23:25,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25 WrapperNode [2020-10-13 09:23:25,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:23:25,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:23:25,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:23:25,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:23:25,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25" (1/1) ... [2020-10-13 09:23:25,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25" (1/1) ... [2020-10-13 09:23:26,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25" (1/1) ... [2020-10-13 09:23:26,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25" (1/1) ... [2020-10-13 09:23:26,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25" (1/1) ... [2020-10-13 09:23:26,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25" (1/1) ... [2020-10-13 09:23:26,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25" (1/1) ... [2020-10-13 09:23:26,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:23:26,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:23:26,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:23:26,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:23:26,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25" (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 09:23:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:23:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:23:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:23:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:23:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:23:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:23:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:23:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:23:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:23:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:23:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:23:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:23:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:23:28,832 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:23:28,833 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:23:28,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:28 BoogieIcfgContainer [2020-10-13 09:23:28,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:23:28,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:23:28,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:23:28,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:23:28,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:23:24" (1/3) ... [2020-10-13 09:23:28,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae7fbc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:28, skipping insertion in model container [2020-10-13 09:23:28,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:25" (2/3) ... [2020-10-13 09:23:28,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae7fbc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:28, skipping insertion in model container [2020-10-13 09:23:28,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:28" (3/3) ... [2020-10-13 09:23:28,850 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label45.c [2020-10-13 09:23:28,861 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:23:28,871 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:23:28,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:23:28,917 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:23:28,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:23:28,917 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:23:28,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:23:28,918 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:23:28,918 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:23:28,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:23:28,918 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:23:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:23:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 09:23:28,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:28,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:23:28,960 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:28,967 INFO L82 PathProgramCache]: Analyzing trace with hash -157468318, now seen corresponding path program 1 times [2020-10-13 09:23:28,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:28,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778091324] [2020-10-13 09:23:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:29,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:29,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:29,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 09:23:29,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-13 09:23:29,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:23:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:23:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:23:29,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:23:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:29,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:23:29,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:29,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:23:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:29,776 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 09:23:29,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778091324] [2020-10-13 09:23:29,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:23:29,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:23:29,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001472844] [2020-10-13 09:23:29,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:23:29,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:29,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:23:29,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:23:29,803 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2020-10-13 09:23:35,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:35,372 INFO L93 Difference]: Finished difference Result 1515 states and 2849 transitions. [2020-10-13 09:23:35,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:23:35,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-13 09:23:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:35,405 INFO L225 Difference]: With dead ends: 1515 [2020-10-13 09:23:35,405 INFO L226 Difference]: Without dead ends: 1038 [2020-10-13 09:23:35,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-13 09:23:35,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2020-10-13 09:23:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-13 09:23:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1485 transitions. [2020-10-13 09:23:35,554 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1485 transitions. Word has length 59 [2020-10-13 09:23:35,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:35,555 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1485 transitions. [2020-10-13 09:23:35,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:23:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1485 transitions. [2020-10-13 09:23:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 09:23:35,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:35,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:23:35,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:23:35,565 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:35,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1320297042, now seen corresponding path program 1 times [2020-10-13 09:23:35,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:35,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640096260] [2020-10-13 09:23:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:35,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:23:36,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:23:36,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-13 09:23:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:23:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:23:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:36,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:36,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:36,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:36,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:36,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:23:36,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:36,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:23:36,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:23:36,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:23:36,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640096260] [2020-10-13 09:23:36,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:36,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:23:36,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216665506] [2020-10-13 09:23:36,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:23:36,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:36,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:23:36,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:23:36,726 INFO L87 Difference]: Start difference. First operand 1034 states and 1485 transitions. Second operand 5 states. [2020-10-13 09:23:40,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:40,194 INFO L93 Difference]: Finished difference Result 2408 states and 3593 transitions. [2020-10-13 09:23:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:23:40,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-13 09:23:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:40,203 INFO L225 Difference]: With dead ends: 2408 [2020-10-13 09:23:40,203 INFO L226 Difference]: Without dead ends: 1380 [2020-10-13 09:23:40,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:23:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-13 09:23:40,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1376. [2020-10-13 09:23:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-10-13 09:23:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1900 transitions. [2020-10-13 09:23:40,248 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1900 transitions. Word has length 135 [2020-10-13 09:23:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:40,249 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 1900 transitions. [2020-10-13 09:23:40,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:23:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1900 transitions. [2020-10-13 09:23:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-13 09:23:40,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:40,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:23:40,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:23:40,259 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:40,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:40,260 INFO L82 PathProgramCache]: Analyzing trace with hash 365406558, now seen corresponding path program 1 times [2020-10-13 09:23:40,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:40,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3067363] [2020-10-13 09:23:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:40,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:45,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:45,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-13 09:23:45,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:23:45,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 09:23:45,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-13 09:23:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:23:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:45,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:45,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:45,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:45,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:45,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:23:45,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:45,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:23:45,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:45,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:45,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:45,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:45,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:23:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:45,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:45,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:45,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:23:45,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:23:45,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:23:45,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:23:45,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3067363] [2020-10-13 09:23:45,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:45,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:23:45,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098676766] [2020-10-13 09:23:45,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:23:45,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:45,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:23:45,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:23:45,705 INFO L87 Difference]: Start difference. First operand 1376 states and 1900 transitions. Second operand 5 states. [2020-10-13 09:23:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:49,347 INFO L93 Difference]: Finished difference Result 3434 states and 4847 transitions. [2020-10-13 09:23:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:23:49,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-13 09:23:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:49,364 INFO L225 Difference]: With dead ends: 3434 [2020-10-13 09:23:49,364 INFO L226 Difference]: Without dead ends: 2064 [2020-10-13 09:23:49,368 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 09:23:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2020-10-13 09:23:49,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 2060. [2020-10-13 09:23:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2060 states. [2020-10-13 09:23:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2817 transitions. [2020-10-13 09:23:49,440 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2817 transitions. Word has length 245 [2020-10-13 09:23:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:49,442 INFO L479 AbstractCegarLoop]: Abstraction has 2060 states and 2817 transitions. [2020-10-13 09:23:49,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:23:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2817 transitions. [2020-10-13 09:23:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-13 09:23:49,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:49,455 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 09:23:49,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:23:49,455 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:49,456 INFO L82 PathProgramCache]: Analyzing trace with hash 810890594, now seen corresponding path program 1 times [2020-10-13 09:23:49,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:49,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590616182] [2020-10-13 09:23:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:49,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:54,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-13 09:23:54,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:23:54,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:23:54,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:54,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:54,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:23:54,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:23:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:54,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:54,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:23:54,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:54,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:54,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:54,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:23:54,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:23:54,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:23:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:23:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:55,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:55,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:23:55,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:23:55,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-13 09:23:55,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:23:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:23:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:23:55,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:23:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:23:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 233 proven. 71 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:23:55,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590616182] [2020-10-13 09:23:55,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:55,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:23:55,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663577936] [2020-10-13 09:23:55,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:23:55,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:55,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:23:55,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:23:55,600 INFO L87 Difference]: Start difference. First operand 2060 states and 2817 transitions. Second operand 6 states. [2020-10-13 09:23:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:58,535 INFO L93 Difference]: Finished difference Result 4240 states and 5780 transitions. [2020-10-13 09:23:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:23:58,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 317 [2020-10-13 09:23:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:58,548 INFO L225 Difference]: With dead ends: 4240 [2020-10-13 09:23:58,548 INFO L226 Difference]: Without dead ends: 2122 [2020-10-13 09:23:58,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:23:58,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2020-10-13 09:23:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2060. [2020-10-13 09:23:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2060 states. [2020-10-13 09:23:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2688 transitions. [2020-10-13 09:23:58,609 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2688 transitions. Word has length 317 [2020-10-13 09:23:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:58,609 INFO L479 AbstractCegarLoop]: Abstraction has 2060 states and 2688 transitions. [2020-10-13 09:23:58,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:23:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2688 transitions. [2020-10-13 09:23:58,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 09:23:58,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:58,617 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:23:58,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:23:58,618 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:58,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:58,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1671767153, now seen corresponding path program 1 times [2020-10-13 09:23:58,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:58,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112294035] [2020-10-13 09:23:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:59,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-13 09:24:03,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:24:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:24:03,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:03,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:24:03,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:24:03,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:03,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:03,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:24:03,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:24:03,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:24:03,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:03,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:24:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:03,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:04,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:04,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:04,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:24:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-13 09:24:04,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:24:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:24:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:04,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:04,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:24:04,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:04,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:24:04,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:04,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:24:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 248 proven. 71 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:24:04,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112294035] [2020-10-13 09:24:04,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:04,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:24:04,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35974011] [2020-10-13 09:24:04,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:24:04,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:04,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:24:04,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:24:04,909 INFO L87 Difference]: Start difference. First operand 2060 states and 2688 transitions. Second operand 6 states. [2020-10-13 09:24:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:07,954 INFO L93 Difference]: Finished difference Result 4240 states and 5522 transitions. [2020-10-13 09:24:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:24:07,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 332 [2020-10-13 09:24:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:07,967 INFO L225 Difference]: With dead ends: 4240 [2020-10-13 09:24:07,967 INFO L226 Difference]: Without dead ends: 2122 [2020-10-13 09:24:07,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:24:07,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2020-10-13 09:24:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2060. [2020-10-13 09:24:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2060 states. [2020-10-13 09:24:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2625 transitions. [2020-10-13 09:24:08,036 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2625 transitions. Word has length 332 [2020-10-13 09:24:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:08,036 INFO L479 AbstractCegarLoop]: Abstraction has 2060 states and 2625 transitions. [2020-10-13 09:24:08,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:24:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2625 transitions. [2020-10-13 09:24:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-13 09:24:08,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:08,045 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:24:08,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:24:08,045 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:08,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:08,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1148906074, now seen corresponding path program 1 times [2020-10-13 09:24:08,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:08,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596551199] [2020-10-13 09:24:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:08,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:08,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:13,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:13,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-13 09:24:13,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:24:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:24:13,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:24:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:24:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:13,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:13,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:13,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:13,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:24:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:13,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:13,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:13,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:24:13,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:24:13,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:24:13,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 09:24:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:13,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:13,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:13,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:24:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-13 09:24:13,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:24:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:13,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-13 09:24:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:13,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:13,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:13,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:24:13,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:24:13,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:24:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 251 proven. 71 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:24:14,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596551199] [2020-10-13 09:24:14,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:14,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:14,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903488982] [2020-10-13 09:24:14,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:14,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:14,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:14,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:14,250 INFO L87 Difference]: Start difference. First operand 2060 states and 2625 transitions. Second operand 7 states. [2020-10-13 09:24:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:17,659 INFO L93 Difference]: Finished difference Result 4268 states and 5467 transitions. [2020-10-13 09:24:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:24:17,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-13 09:24:17,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:17,673 INFO L225 Difference]: With dead ends: 4268 [2020-10-13 09:24:17,673 INFO L226 Difference]: Without dead ends: 2141 [2020-10-13 09:24:17,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:24:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-10-13 09:24:17,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2064. [2020-10-13 09:24:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2064 states. [2020-10-13 09:24:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2415 transitions. [2020-10-13 09:24:17,740 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2415 transitions. Word has length 335 [2020-10-13 09:24:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:17,740 INFO L479 AbstractCegarLoop]: Abstraction has 2064 states and 2415 transitions. [2020-10-13 09:24:17,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2415 transitions. [2020-10-13 09:24:17,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-13 09:24:17,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:17,751 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:24:17,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:24:17,751 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:17,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2063616121, now seen corresponding path program 1 times [2020-10-13 09:24:17,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:17,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57728869] [2020-10-13 09:24:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:17,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:18,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:19,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:22,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:22,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-13 09:24:22,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:24:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:24:22,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:24:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:24:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:24:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:22,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:22,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:22,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:22,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:22,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:23,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 09:24:23,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:23,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 09:24:23,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:23,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:23,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:23,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:24:23,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-13 09:24:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:23,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:23,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:24:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-13 09:24:23,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:24:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:24:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:23,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-13 09:24:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:23,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:24:23,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:24:23,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:24:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 267 proven. 71 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:24:24,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57728869] [2020-10-13 09:24:24,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:24,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:24:24,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350953583] [2020-10-13 09:24:24,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:24:24,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:24,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:24:24,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:24:24,208 INFO L87 Difference]: Start difference. First operand 2064 states and 2415 transitions. Second operand 10 states. [2020-10-13 09:24:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:28,118 INFO L93 Difference]: Finished difference Result 4356 states and 5102 transitions. [2020-10-13 09:24:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:24:28,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 424 [2020-10-13 09:24:28,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:28,130 INFO L225 Difference]: With dead ends: 4356 [2020-10-13 09:24:28,130 INFO L226 Difference]: Without dead ends: 2209 [2020-10-13 09:24:28,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:24:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2020-10-13 09:24:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 2063. [2020-10-13 09:24:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2063 states. [2020-10-13 09:24:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 2353 transitions. [2020-10-13 09:24:28,188 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 2353 transitions. Word has length 424 [2020-10-13 09:24:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:28,188 INFO L479 AbstractCegarLoop]: Abstraction has 2063 states and 2353 transitions. [2020-10-13 09:24:28,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:24:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 2353 transitions. [2020-10-13 09:24:28,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-13 09:24:28,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:28,200 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, 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, 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, 1, 1, 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 09:24:28,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:24:28,200 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:28,201 INFO L82 PathProgramCache]: Analyzing trace with hash 164873786, now seen corresponding path program 1 times [2020-10-13 09:24:28,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:28,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245230065] [2020-10-13 09:24:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:28,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:28,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:33,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:33,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-13 09:24:33,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:24:33,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 09:24:33,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 368 [2020-10-13 09:24:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:24:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:33,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:33,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:33,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:33,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:33,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:33,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:33,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:33,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:33,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:24:33,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:24:33,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:33,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 09:24:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:33,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:33,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:24:33,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:33,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:24:33,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:33,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-13 09:24:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:33,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:33,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:33,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:33,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:33,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:24:33,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:24:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-13 09:24:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:33,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:33,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:24:33,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:33,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:24:33,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:33,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:24:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 425 proven. 2 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-13 09:24:33,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245230065] [2020-10-13 09:24:33,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:33,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:24:33,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028312334] [2020-10-13 09:24:33,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:24:33,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:33,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:24:33,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:24:33,748 INFO L87 Difference]: Start difference. First operand 2063 states and 2353 transitions. Second operand 8 states. [2020-10-13 09:24:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:37,885 INFO L93 Difference]: Finished difference Result 4839 states and 5671 transitions. [2020-10-13 09:24:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:24:37,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 485 [2020-10-13 09:24:37,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:37,902 INFO L225 Difference]: With dead ends: 4839 [2020-10-13 09:24:37,902 INFO L226 Difference]: Without dead ends: 2782 [2020-10-13 09:24:37,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:24:37,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2020-10-13 09:24:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2427. [2020-10-13 09:24:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2020-10-13 09:24:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 2788 transitions. [2020-10-13 09:24:37,964 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 2788 transitions. Word has length 485 [2020-10-13 09:24:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:37,965 INFO L479 AbstractCegarLoop]: Abstraction has 2427 states and 2788 transitions. [2020-10-13 09:24:37,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:24:37,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 2788 transitions. [2020-10-13 09:24:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-13 09:24:37,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:37,977 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:24:37,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:24:37,977 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash 360694178, now seen corresponding path program 1 times [2020-10-13 09:24:37,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:37,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744264271] [2020-10-13 09:24:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:43,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:43,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 521 [2020-10-13 09:24:43,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:24:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:24:43,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 368 [2020-10-13 09:24:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:24:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:43,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:43,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:43,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:24:43,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:43,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:43,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:43,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:24:43,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:24:43,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 09:24:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:43,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:43,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:24:43,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:24:43,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-13 09:24:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:43,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:43,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:43,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:43,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:24:43,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:24:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:43,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-13 09:24:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:43,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:43,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:24:43,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:24:43,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:24:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 485 proven. 2 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-13 09:24:43,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744264271] [2020-10-13 09:24:43,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:43,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:43,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131406488] [2020-10-13 09:24:43,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:43,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:43,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:43,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:43,531 INFO L87 Difference]: Start difference. First operand 2427 states and 2788 transitions. Second operand 7 states. [2020-10-13 09:24:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:46,604 INFO L93 Difference]: Finished difference Result 6950 states and 8161 transitions. [2020-10-13 09:24:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:24:46,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 505 [2020-10-13 09:24:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:46,625 INFO L225 Difference]: With dead ends: 6950 [2020-10-13 09:24:46,626 INFO L226 Difference]: Without dead ends: 4529 [2020-10-13 09:24:46,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 09:24:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2020-10-13 09:24:46,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 4170. [2020-10-13 09:24:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4170 states. [2020-10-13 09:24:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 4713 transitions. [2020-10-13 09:24:46,722 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 4713 transitions. Word has length 505 [2020-10-13 09:24:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:46,722 INFO L479 AbstractCegarLoop]: Abstraction has 4170 states and 4713 transitions. [2020-10-13 09:24:46,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:46,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 4713 transitions. [2020-10-13 09:24:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2020-10-13 09:24:46,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:46,737 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:24:46,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:24:46,737 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1895787018, now seen corresponding path program 1 times [2020-10-13 09:24:46,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:46,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022346552] [2020-10-13 09:24:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:47,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:51,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:51,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-13 09:24:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:24:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 09:24:51,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:24:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:24:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:24:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:51,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:51,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:51,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:51,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:51,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:24:51,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:24:51,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:51,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:52,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:52,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:24:52,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:52,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:24:52,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:52,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:52,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:52,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:24:52,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:24:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:52,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:52,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:52,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:24:52,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:24:52,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:24:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:52,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 09:24:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:52,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:52,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:24:52,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:24:52,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:24:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:52,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-13 09:24:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:52,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:52,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:24:52,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:24:52,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:24:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:52,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:52,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2020-10-13 09:24:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:52,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:52,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:24:52,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:52,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:24:52,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:52,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:52,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:24:52,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:52,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 260 proven. 380 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2020-10-13 09:24:52,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022346552] [2020-10-13 09:24:52,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:52,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:52,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416486905] [2020-10-13 09:24:52,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:52,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:52,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:52,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:52,671 INFO L87 Difference]: Start difference. First operand 4170 states and 4713 transitions. Second operand 7 states. [2020-10-13 09:24:55,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:55,363 INFO L93 Difference]: Finished difference Result 9039 states and 10188 transitions. [2020-10-13 09:24:55,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:24:55,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 777 [2020-10-13 09:24:55,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:55,387 INFO L225 Difference]: With dead ends: 9039 [2020-10-13 09:24:55,387 INFO L226 Difference]: Without dead ends: 4875 [2020-10-13 09:24:55,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:24:55,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2020-10-13 09:24:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4852. [2020-10-13 09:24:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4852 states. [2020-10-13 09:24:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 5421 transitions. [2020-10-13 09:24:55,500 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 5421 transitions. Word has length 777 [2020-10-13 09:24:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:55,500 INFO L479 AbstractCegarLoop]: Abstraction has 4852 states and 5421 transitions. [2020-10-13 09:24:55,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 5421 transitions. [2020-10-13 09:24:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2020-10-13 09:24:55,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:55,520 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:24:55,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:24:55,521 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:55,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1420205295, now seen corresponding path program 1 times [2020-10-13 09:24:55,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:55,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624806775] [2020-10-13 09:24:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:59,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:00,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:00,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 934 [2020-10-13 09:25:00,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:25:00,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 09:25:00,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:00,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:00,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 875 [2020-10-13 09:25:00,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:25:00,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:00,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:00,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:00,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:00,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:00,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:00,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:25:00,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:25:00,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:00,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:25:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:00,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:00,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:00,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:25:00,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:25:00,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:00,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-13 09:25:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:00,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:25:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-13 09:25:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:01,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:01,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:25:01,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:01,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:25:01,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:01,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:01,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-13 09:25:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:01,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:01,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:25:01,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:25:01,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:25:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 267 proven. 5 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2020-10-13 09:25:01,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624806775] [2020-10-13 09:25:01,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:01,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:25:01,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377833708] [2020-10-13 09:25:01,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:25:01,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:01,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:25:01,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:25:01,551 INFO L87 Difference]: Start difference. First operand 4852 states and 5421 transitions. Second operand 5 states. [2020-10-13 09:25:04,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:04,343 INFO L93 Difference]: Finished difference Result 12448 states and 14206 transitions. [2020-10-13 09:25:04,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:25:04,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 916 [2020-10-13 09:25:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:04,373 INFO L225 Difference]: With dead ends: 12448 [2020-10-13 09:25:04,373 INFO L226 Difference]: Without dead ends: 8278 [2020-10-13 09:25:04,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 09:25:04,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2020-10-13 09:25:04,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 8274. [2020-10-13 09:25:04,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8274 states. [2020-10-13 09:25:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 9358 transitions. [2020-10-13 09:25:04,536 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 9358 transitions. Word has length 916 [2020-10-13 09:25:04,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:04,538 INFO L479 AbstractCegarLoop]: Abstraction has 8274 states and 9358 transitions. [2020-10-13 09:25:04,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:25:04,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 9358 transitions. [2020-10-13 09:25:04,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2020-10-13 09:25:04,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:04,563 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:25:04,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:25:04,563 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:04,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:04,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1928469278, now seen corresponding path program 1 times [2020-10-13 09:25:04,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:04,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714084943] [2020-10-13 09:25:04,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:05,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:09,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:09,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 949 [2020-10-13 09:25:09,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:25:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:25:09,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 380 [2020-10-13 09:25:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:25:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:09,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:09,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:09,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:09,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:25:09,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:09,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:09,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:25:09,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:25:09,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:09,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:25:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:09,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:09,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:09,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:25:09,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:25:09,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:25:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:09,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-13 09:25:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:10,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:10,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:10,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:10,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:25:10,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:25:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-13 09:25:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:10,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:10,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:25:10,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:25:10,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:25:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-13 09:25:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:10,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:10,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:25:10,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:25:10,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 09:25:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 505 proven. 226 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2020-10-13 09:25:10,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714084943] [2020-10-13 09:25:10,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:10,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:10,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231221095] [2020-10-13 09:25:10,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:10,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:10,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:10,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:10,742 INFO L87 Difference]: Start difference. First operand 8274 states and 9358 transitions. Second operand 7 states. [2020-10-13 09:25:13,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:13,616 INFO L93 Difference]: Finished difference Result 18933 states and 21811 transitions. [2020-10-13 09:25:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:25:13,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 931 [2020-10-13 09:25:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:13,647 INFO L225 Difference]: With dead ends: 18933 [2020-10-13 09:25:13,647 INFO L226 Difference]: Without dead ends: 11341 [2020-10-13 09:25:13,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 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 09:25:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2020-10-13 09:25:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 11335. [2020-10-13 09:25:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11335 states. [2020-10-13 09:25:13,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11335 states to 11335 states and 12883 transitions. [2020-10-13 09:25:13,856 INFO L78 Accepts]: Start accepts. Automaton has 11335 states and 12883 transitions. Word has length 931 [2020-10-13 09:25:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:13,857 INFO L479 AbstractCegarLoop]: Abstraction has 11335 states and 12883 transitions. [2020-10-13 09:25:13,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 11335 states and 12883 transitions. [2020-10-13 09:25:13,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1279 [2020-10-13 09:25:13,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:13,895 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:25:13,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:25:13,895 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:13,896 INFO L82 PathProgramCache]: Analyzing trace with hash 639831511, now seen corresponding path program 1 times [2020-10-13 09:25:13,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:13,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353819489] [2020-10-13 09:25:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:14,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:14,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:19,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:19,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1302 [2020-10-13 09:25:19,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:25:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 09:25:19,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 840 [2020-10-13 09:25:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:25:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:19,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:19,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:19,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:19,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:19,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:19,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:19,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:19,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:19,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:19,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:19,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:19,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:19,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:19,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:25:19,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:25:19,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:19,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:25:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:19,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:19,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:19,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:25:19,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:19,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:25:19,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:19,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:19,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:25:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:19,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:19,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:25:19,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:19,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:25:19,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:19,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-13 09:25:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:19,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:19,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:19,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:25:19,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:19,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:19,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:19,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:19,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-13 09:25:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:19,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:19,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:19,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:25:19,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:25:19,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 09:25:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:19,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 830 [2020-10-13 09:25:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:19,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:19,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:25:19,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:25:19,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:25:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2020-10-13 09:25:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:20,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:20,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:20,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:25:20,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:25:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:20,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:20,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1155 [2020-10-13 09:25:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:20,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:20,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:20,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:25:20,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:25:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 970 proven. 178 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2020-10-13 09:25:20,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353819489] [2020-10-13 09:25:20,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:20,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:20,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431386938] [2020-10-13 09:25:20,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:20,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:20,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:20,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:20,941 INFO L87 Difference]: Start difference. First operand 11335 states and 12883 transitions. Second operand 7 states. [2020-10-13 09:25:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:24,336 INFO L93 Difference]: Finished difference Result 23354 states and 26657 transitions. [2020-10-13 09:25:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:25:24,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1278 [2020-10-13 09:25:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:24,384 INFO L225 Difference]: With dead ends: 23354 [2020-10-13 09:25:24,384 INFO L226 Difference]: Without dead ends: 12701 [2020-10-13 09:25:24,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 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 09:25:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12701 states. [2020-10-13 09:25:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12701 to 12699. [2020-10-13 09:25:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12699 states. [2020-10-13 09:25:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12699 states to 12699 states and 14310 transitions. [2020-10-13 09:25:24,633 INFO L78 Accepts]: Start accepts. Automaton has 12699 states and 14310 transitions. Word has length 1278 [2020-10-13 09:25:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:24,635 INFO L479 AbstractCegarLoop]: Abstraction has 12699 states and 14310 transitions. [2020-10-13 09:25:24,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 12699 states and 14310 transitions. [2020-10-13 09:25:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1301 [2020-10-13 09:25:24,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:24,680 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, 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, 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, 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, 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, 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] [2020-10-13 09:25:24,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:25:24,680 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:24,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:24,682 INFO L82 PathProgramCache]: Analyzing trace with hash -690328969, now seen corresponding path program 1 times [2020-10-13 09:25:24,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:24,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665152612] [2020-10-13 09:25:24,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:25,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:26,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:29,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:29,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1322 [2020-10-13 09:25:29,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:25:29,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 09:25:29,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 508 [2020-10-13 09:25:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:25:29,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:30,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:30,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:30,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:30,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:30,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:30,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:25:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:30,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:25:30,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:30,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:30,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:30,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:30,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:25:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:30,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:30,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:25:30,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:30,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:25:30,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:30,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:30,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:25:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:30,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:25:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:30,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:30,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:30,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:25:30,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:30,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:25:30,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:25:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-13 09:25:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:30,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:30,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:30,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:25:30,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:25:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:30,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-13 09:25:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:30,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:30,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:25:30,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 09:25:30,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:25:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 962 [2020-10-13 09:25:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:30,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:30,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:30,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:25:30,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:25:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1177 [2020-10-13 09:25:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:30,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:30,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:30,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:25:30,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:25:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2992 backedges. 535 proven. 270 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2020-10-13 09:25:31,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665152612] [2020-10-13 09:25:31,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:31,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:31,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142632010] [2020-10-13 09:25:31,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:31,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:31,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:31,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:31,651 INFO L87 Difference]: Start difference. First operand 12699 states and 14310 transitions. Second operand 7 states. [2020-10-13 09:25:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:35,631 INFO L93 Difference]: Finished difference Result 28786 states and 32748 transitions. [2020-10-13 09:25:35,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:25:35,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1300 [2020-10-13 09:25:35,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:35,678 INFO L225 Difference]: With dead ends: 28786 [2020-10-13 09:25:35,679 INFO L226 Difference]: Without dead ends: 16769 [2020-10-13 09:25:35,702 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 09:25:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16769 states. [2020-10-13 09:25:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16769 to 16767. [2020-10-13 09:25:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16767 states. [2020-10-13 09:25:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16767 states to 16767 states and 18895 transitions. [2020-10-13 09:25:36,005 INFO L78 Accepts]: Start accepts. Automaton has 16767 states and 18895 transitions. Word has length 1300 [2020-10-13 09:25:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:36,006 INFO L479 AbstractCegarLoop]: Abstraction has 16767 states and 18895 transitions. [2020-10-13 09:25:36,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 16767 states and 18895 transitions. [2020-10-13 09:25:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1326 [2020-10-13 09:25:36,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:36,048 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, 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, 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, 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, 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, 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] [2020-10-13 09:25:36,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:25:36,049 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:36,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:36,049 INFO L82 PathProgramCache]: Analyzing trace with hash -490585282, now seen corresponding path program 1 times [2020-10-13 09:25:36,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:36,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442249896] [2020-10-13 09:25:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:36,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:41,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:41,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1347 [2020-10-13 09:25:41,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:25:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 09:25:41,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 508 [2020-10-13 09:25:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:25:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:41,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:41,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:41,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:41,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:25:41,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:41,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:41,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:41,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:41,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:41,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:41,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:25:41,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:41,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:25:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:25:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:41,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:41,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:25:41,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:41,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:25:41,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:25:41,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:41,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:25:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:41,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:41,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:25:41,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:25:41,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:25:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:41,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-13 09:25:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:41,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:41,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:41,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:41,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:25:41,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:25:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:41,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2020-10-13 09:25:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:42,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:42,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:25:42,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:42,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:25:42,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:25:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 987 [2020-10-13 09:25:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:42,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:42,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:42,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:42,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:25:42,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:42,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:42,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:25:42,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:42,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:42,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1202 [2020-10-13 09:25:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:42,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:42,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:42,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:25:42,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:25:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:42,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3119 backedges. 585 proven. 347 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2020-10-13 09:25:43,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442249896] [2020-10-13 09:25:43,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:43,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:43,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184683597] [2020-10-13 09:25:43,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:43,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:43,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:43,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:43,216 INFO L87 Difference]: Start difference. First operand 16767 states and 18895 transitions. Second operand 7 states. [2020-10-13 09:25:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:46,585 INFO L93 Difference]: Finished difference Result 34551 states and 39016 transitions. [2020-10-13 09:25:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:25:46,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1325 [2020-10-13 09:25:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:46,623 INFO L225 Difference]: With dead ends: 34551 [2020-10-13 09:25:46,623 INFO L226 Difference]: Without dead ends: 18466 [2020-10-13 09:25:46,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:25:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18466 states. [2020-10-13 09:25:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 18464. [2020-10-13 09:25:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18464 states. [2020-10-13 09:25:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18464 states to 18464 states and 20629 transitions. [2020-10-13 09:25:46,931 INFO L78 Accepts]: Start accepts. Automaton has 18464 states and 20629 transitions. Word has length 1325 [2020-10-13 09:25:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:46,932 INFO L479 AbstractCegarLoop]: Abstraction has 18464 states and 20629 transitions. [2020-10-13 09:25:46,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 18464 states and 20629 transitions. [2020-10-13 09:25:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1345 [2020-10-13 09:25:46,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:46,972 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, 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, 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, 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, 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] [2020-10-13 09:25:46,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:25:46,973 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:46,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1036234769, now seen corresponding path program 1 times [2020-10-13 09:25:46,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:46,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395528137] [2020-10-13 09:25:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:52,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:52,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1366 [2020-10-13 09:25:52,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:25:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:25:52,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1233 [2020-10-13 09:25:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:25:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:52,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:52,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:52,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:52,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:52,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:25:52,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:52,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:52,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:52,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:52,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:52,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:52,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:25:52,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:25:52,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:52,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:52,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:52,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:25:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:52,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:25:52,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:25:52,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:25:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:52,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:52,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:25:52,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:52,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:25:52,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:52,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:25:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:52,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:52,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:25:52,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:52,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:25:52,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:52,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:52,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:52,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:52,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:25:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:52,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:52,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:25:52,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:52,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:25:52,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:52,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:52,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:25:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:52,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:52,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:52,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:52,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 09:25:52,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:52,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 09:25:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:53,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1221 [2020-10-13 09:25:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:53,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:25:53,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:25:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3343 backedges. 803 proven. 2 refuted. 0 times theorem prover too weak. 2538 trivial. 0 not checked. [2020-10-13 09:25:54,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395528137] [2020-10-13 09:25:54,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:54,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:54,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206438929] [2020-10-13 09:25:54,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:54,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:54,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:54,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:54,889 INFO L87 Difference]: Start difference. First operand 18464 states and 20629 transitions. Second operand 7 states. [2020-10-13 09:25:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:58,445 INFO L93 Difference]: Finished difference Result 37381 states and 42247 transitions. [2020-10-13 09:25:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:25:58,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1344 [2020-10-13 09:25:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:58,492 INFO L225 Difference]: With dead ends: 37381 [2020-10-13 09:25:58,492 INFO L226 Difference]: Without dead ends: 19260 [2020-10-13 09:25:58,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 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 09:25:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19260 states. [2020-10-13 09:25:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19260 to 18133. [2020-10-13 09:25:58,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18133 states. [2020-10-13 09:25:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18133 states to 18133 states and 19792 transitions. [2020-10-13 09:25:58,959 INFO L78 Accepts]: Start accepts. Automaton has 18133 states and 19792 transitions. Word has length 1344 [2020-10-13 09:25:58,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:58,960 INFO L479 AbstractCegarLoop]: Abstraction has 18133 states and 19792 transitions. [2020-10-13 09:25:58,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 18133 states and 19792 transitions. [2020-10-13 09:25:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1424 [2020-10-13 09:25:58,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:58,994 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:25:58,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:25:58,995 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:58,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:58,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1595079018, now seen corresponding path program 1 times [2020-10-13 09:25:58,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:58,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594593884] [2020-10-13 09:25:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:04,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1447 [2020-10-13 09:26:04,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:26:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-13 09:26:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1016 [2020-10-13 09:26:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:26:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:04,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:04,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:04,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:04,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:04,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:26:04,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:04,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:04,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:04,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:26:04,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:26:04,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:04,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:04,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:26:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:04,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:04,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:26:04,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:26:04,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:04,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 09:26:04,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:26:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:26:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:26:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:26:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:05,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:05,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:26:05,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:26:05,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:05,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:26:05,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:26:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:05,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:05,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:05,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:05,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 09:26:05,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:26:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:05,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:26:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:05,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:05,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:26:05,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:26:05,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:26:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:05,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1077 [2020-10-13 09:26:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:05,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:05,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:26:05,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:26:05,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-13 09:26:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:05,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:26:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:05,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:05,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 09:26:05,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:26:05,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3419 backedges. 744 proven. 70 refuted. 0 times theorem prover too weak. 2605 trivial. 0 not checked. [2020-10-13 09:26:06,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594593884] [2020-10-13 09:26:06,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:06,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:06,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094649800] [2020-10-13 09:26:06,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:06,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:06,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:06,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:06,761 INFO L87 Difference]: Start difference. First operand 18133 states and 19792 transitions. Second operand 7 states. [2020-10-13 09:26:10,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:10,267 INFO L93 Difference]: Finished difference Result 35927 states and 39253 transitions. [2020-10-13 09:26:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:26:10,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1423 [2020-10-13 09:26:10,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:10,302 INFO L225 Difference]: With dead ends: 35927 [2020-10-13 09:26:10,303 INFO L226 Difference]: Without dead ends: 18139 [2020-10-13 09:26:10,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:26:10,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18139 states. [2020-10-13 09:26:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18139 to 17796. [2020-10-13 09:26:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17796 states. [2020-10-13 09:26:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17796 states to 17796 states and 19412 transitions. [2020-10-13 09:26:10,571 INFO L78 Accepts]: Start accepts. Automaton has 17796 states and 19412 transitions. Word has length 1423 [2020-10-13 09:26:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:10,572 INFO L479 AbstractCegarLoop]: Abstraction has 17796 states and 19412 transitions. [2020-10-13 09:26:10,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 17796 states and 19412 transitions. [2020-10-13 09:26:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1570 [2020-10-13 09:26:10,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:10,606 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:26:10,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:26:10,606 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:10,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1302866182, now seen corresponding path program 1 times [2020-10-13 09:26:10,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:10,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527651195] [2020-10-13 09:26:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:11,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:15,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:15,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1597 [2020-10-13 09:26:15,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:26:15,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 09:26:15,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1535 [2020-10-13 09:26:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:26:15,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:16,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:26:16,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:26:16,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:26:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:26:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:26:16,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:26:16,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-13 09:26:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:26:16,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:26:16,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:16,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-13 09:26:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:26:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:26:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-13 09:26:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:26:16,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:26:16,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:16,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:16,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-10-13 09:26:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 09:26:16,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:26:16,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:26:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 09:26:16,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:26:16,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:16,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1113 [2020-10-13 09:26:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:26:16,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:26:16,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1223 [2020-10-13 09:26:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:26:16,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 09:26:16,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-13 09:26:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:26:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:16,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 09:26:16,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:16,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:26:16,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 09:26:16,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4105 backedges. 432 proven. 8 refuted. 0 times theorem prover too weak. 3665 trivial. 0 not checked. [2020-10-13 09:26:17,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527651195] [2020-10-13 09:26:17,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:17,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:26:17,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806835883] [2020-10-13 09:26:17,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:26:17,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:17,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:26:17,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:26:17,900 INFO L87 Difference]: Start difference. First operand 17796 states and 19412 transitions. Second operand 6 states. [2020-10-13 09:26:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:21,757 INFO L93 Difference]: Finished difference Result 35242 states and 38478 transitions. [2020-10-13 09:26:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:26:21,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1569 [2020-10-13 09:26:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:21,794 INFO L225 Difference]: With dead ends: 35242 [2020-10-13 09:26:21,795 INFO L226 Difference]: Without dead ends: 17791 [2020-10-13 09:26:21,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:26:21,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17791 states. [2020-10-13 09:26:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17791 to 17789. [2020-10-13 09:26:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17789 states. [2020-10-13 09:26:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17789 states to 17789 states and 18912 transitions. [2020-10-13 09:26:22,091 INFO L78 Accepts]: Start accepts. Automaton has 17789 states and 18912 transitions. Word has length 1569 [2020-10-13 09:26:22,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:22,093 INFO L479 AbstractCegarLoop]: Abstraction has 17789 states and 18912 transitions. [2020-10-13 09:26:22,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:26:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 17789 states and 18912 transitions. [2020-10-13 09:26:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1598 [2020-10-13 09:26:22,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:22,128 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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, 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] [2020-10-13 09:26:22,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:26:22,128 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1510433098, now seen corresponding path program 1 times [2020-10-13 09:26:22,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:22,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843180839] [2020-10-13 09:26:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:22,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1621 [2020-10-13 09:26:27,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:26:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-13 09:26:27,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1173 [2020-10-13 09:26:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-13 09:26:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:27,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:27,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:27,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:26:27,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:27,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:27,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:27,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:27,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:27,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:27,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:26:27,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:26:27,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:27,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:26:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:27,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:26:27,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:26:27,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:27,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:26:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:27,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:27,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:26:27,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:27,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:26:27,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:27,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:28,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:26:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:28,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:28,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:26:28,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:28,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:26:28,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:28,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 863 [2020-10-13 09:26:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:28,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:26:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:26:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:28,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1051 [2020-10-13 09:26:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:28,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:28,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:28,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:26:28,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:28,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:26:28,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:26:28,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1161 [2020-10-13 09:26:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:28,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:28,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:26:28,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:28,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 09:26:28,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:28,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:28,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:28,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-13 09:26:28,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1376 [2020-10-13 09:26:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:28,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:28,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:26:28,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:26:28,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:26:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4647 backedges. 1473 proven. 169 refuted. 0 times theorem prover too weak. 3005 trivial. 0 not checked. [2020-10-13 09:26:29,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843180839] [2020-10-13 09:26:29,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:29,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:29,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848885411] [2020-10-13 09:26:29,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:29,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:29,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:29,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:29,820 INFO L87 Difference]: Start difference. First operand 17789 states and 18912 transitions. Second operand 7 states. [2020-10-13 09:26:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:33,126 INFO L93 Difference]: Finished difference Result 35245 states and 37504 transitions. [2020-10-13 09:26:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:26:33,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1597 [2020-10-13 09:26:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:33,152 INFO L225 Difference]: With dead ends: 35245 [2020-10-13 09:26:33,152 INFO L226 Difference]: Without dead ends: 17801 [2020-10-13 09:26:33,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:26:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17801 states. [2020-10-13 09:26:33,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17801 to 17454. [2020-10-13 09:26:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17454 states. [2020-10-13 09:26:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17454 states to 17454 states and 18513 transitions. [2020-10-13 09:26:33,430 INFO L78 Accepts]: Start accepts. Automaton has 17454 states and 18513 transitions. Word has length 1597 [2020-10-13 09:26:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:33,432 INFO L479 AbstractCegarLoop]: Abstraction has 17454 states and 18513 transitions. [2020-10-13 09:26:33,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 17454 states and 18513 transitions. [2020-10-13 09:26:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2020-10-13 09:26:33,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:33,470 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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, 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] [2020-10-13 09:26:33,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:26:33,471 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:33,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:33,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1404376317, now seen corresponding path program 1 times [2020-10-13 09:26:33,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:33,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800919848] [2020-10-13 09:26:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:34,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:38,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:38,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1696 [2020-10-13 09:26:38,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:26:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:26:38,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1175 [2020-10-13 09:26:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:26:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:38,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:38,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:38,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:26:38,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:38,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:39,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:39,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:26:39,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:26:39,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:39,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:39,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:26:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:39,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:39,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:26:39,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:26:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:26:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:39,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:39,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:39,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:26:39,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:26:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:39,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:26:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:39,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:39,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:39,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:39,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:26:39,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:39,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:39,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:39,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:26:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:39,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:39,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:26:39,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:26:39,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:26:39,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:39,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1165 [2020-10-13 09:26:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:39,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:39,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:26:39,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:39,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:26:39,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:26:39,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:39,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1236 [2020-10-13 09:26:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:39,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:39,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:26:39,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:26:39,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:26:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:39,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1451 [2020-10-13 09:26:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:40,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:40,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:26:40,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:40,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:26:40,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:40,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:26:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:40,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4807 backedges. 816 proven. 138 refuted. 0 times theorem prover too weak. 3853 trivial. 0 not checked. [2020-10-13 09:26:41,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800919848] [2020-10-13 09:26:41,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:41,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:41,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539269516] [2020-10-13 09:26:41,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:41,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:41,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:41,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:41,260 INFO L87 Difference]: Start difference. First operand 17454 states and 18513 transitions. Second operand 7 states. [2020-10-13 09:26:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:45,022 INFO L93 Difference]: Finished difference Result 34908 states and 37050 transitions. [2020-10-13 09:26:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:26:45,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1672 [2020-10-13 09:26:45,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:45,048 INFO L225 Difference]: With dead ends: 34908 [2020-10-13 09:26:45,048 INFO L226 Difference]: Without dead ends: 17799 [2020-10-13 09:26:45,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 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 09:26:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17799 states. [2020-10-13 09:26:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17799 to 17793. [2020-10-13 09:26:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17793 states. [2020-10-13 09:26:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17793 states to 17793 states and 18872 transitions. [2020-10-13 09:26:45,382 INFO L78 Accepts]: Start accepts. Automaton has 17793 states and 18872 transitions. Word has length 1672 [2020-10-13 09:26:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:45,383 INFO L479 AbstractCegarLoop]: Abstraction has 17793 states and 18872 transitions. [2020-10-13 09:26:45,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:45,383 INFO L276 IsEmpty]: Start isEmpty. Operand 17793 states and 18872 transitions. [2020-10-13 09:26:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1802 [2020-10-13 09:26:45,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:45,423 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:26:45,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:26:45,423 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:45,424 INFO L82 PathProgramCache]: Analyzing trace with hash -587777142, now seen corresponding path program 1 times [2020-10-13 09:26:45,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:45,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294972737] [2020-10-13 09:26:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:50,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:50,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1825 [2020-10-13 09:26:50,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:26:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-13 09:26:50,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1304 [2020-10-13 09:26:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:26:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:50,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:26:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:51,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:26:51,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:51,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:26:51,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:51,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:51,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:26:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:51,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:26:51,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:26:51,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:51,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:26:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:51,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:26:51,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:26:51,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:51,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:26:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:51,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:51,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:26:51,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:51,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:26:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 09:26:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 09:26:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-13 09:26:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1294 [2020-10-13 09:26:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:52,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:52,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:26:52,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:26:52,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:26:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:52,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1365 [2020-10-13 09:26:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:52,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:52,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:52,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:26:52,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:52,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:26:52,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:52,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:52,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:26:52,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:52,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:52,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1580 [2020-10-13 09:26:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:52,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:52,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:26:52,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:26:52,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:26:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5484 backedges. 816 proven. 138 refuted. 0 times theorem prover too weak. 4530 trivial. 0 not checked. [2020-10-13 09:26:53,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294972737] [2020-10-13 09:26:53,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:53,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:53,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15707661] [2020-10-13 09:26:53,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:53,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:53,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:53,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:53,662 INFO L87 Difference]: Start difference. First operand 17793 states and 18872 transitions. Second operand 7 states.