/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:42:04,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:42:04,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:42:04,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:42:04,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:42:04,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:42:04,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:42:04,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:42:04,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:42:04,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:42:04,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:42:04,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:42:04,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:42:04,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:42:04,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:42:04,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:42:04,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:42:04,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:42:04,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:42:04,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:42:04,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:42:04,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:42:04,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:42:04,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:42:04,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:42:04,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:42:04,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:42:04,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:42:04,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:42:04,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:42:04,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:42:04,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:42:04,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:42:04,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:42:04,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:42:04,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:42:04,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:42:04,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:42:04,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:42:04,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:42:04,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:42:04,304 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 09:42:04,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:42:04,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:42:04,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:42:04,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:42:04,330 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:42:04,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:42:04,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:42:04,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:42:04,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:42:04,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:42:04,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:42:04,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:42:04,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:42:04,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:42:04,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:42:04,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:42:04,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:42:04,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:42:04,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:42:04,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:42:04,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:42:04,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:42:04,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:42:04,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:42:04,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:42:04,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:42:04,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:42:04,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:42:04,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:42:04,335 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 09:42:04,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:42:04,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:42:04,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:42:04,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:42:04,695 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:42:04,696 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2020-10-13 09:42:04,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c1e21fa3/316a596579a941e29632c56f7a33b2b1/FLAG33339011e [2020-10-13 09:42:05,586 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:42:05,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2020-10-13 09:42:05,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c1e21fa3/316a596579a941e29632c56f7a33b2b1/FLAG33339011e [2020-10-13 09:42:06,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c1e21fa3/316a596579a941e29632c56f7a33b2b1 [2020-10-13 09:42:06,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:42:06,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:42:06,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:42:06,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:42:06,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:42:06,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:06" (1/1) ... [2020-10-13 09:42:06,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:06, skipping insertion in model container [2020-10-13 09:42:06,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:06" (1/1) ... [2020-10-13 09:42:06,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:42:06,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:42:07,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:42:07,414 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:42:07,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:42:07,924 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:42:07,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07 WrapperNode [2020-10-13 09:42:07,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:42:07,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:42:07,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:42:07,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:42:07,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07" (1/1) ... [2020-10-13 09:42:07,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07" (1/1) ... [2020-10-13 09:42:08,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07" (1/1) ... [2020-10-13 09:42:08,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07" (1/1) ... [2020-10-13 09:42:08,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07" (1/1) ... [2020-10-13 09:42:08,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07" (1/1) ... [2020-10-13 09:42:08,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07" (1/1) ... [2020-10-13 09:42:08,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:42:08,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:42:08,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:42:08,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:42:08,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07" (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 09:42:08,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:42:08,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:42:08,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:42:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:42:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:42:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:42:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:42:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:42:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:42:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:42:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:42:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:42:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:42:15,352 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:42:15,353 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:42:15,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:15 BoogieIcfgContainer [2020-10-13 09:42:15,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:42:15,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:42:15,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:42:15,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:42:15,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:42:06" (1/3) ... [2020-10-13 09:42:15,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223be396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:15, skipping insertion in model container [2020-10-13 09:42:15,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:07" (2/3) ... [2020-10-13 09:42:15,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223be396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:15, skipping insertion in model container [2020-10-13 09:42:15,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:15" (3/3) ... [2020-10-13 09:42:15,390 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label58.c [2020-10-13 09:42:15,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:42:15,418 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:42:15,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:42:15,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:42:15,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:42:15,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:42:15,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:42:15,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:42:15,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:42:15,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:42:15,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:42:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:42:15,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 09:42:15,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:15,520 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] [2020-10-13 09:42:15,521 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:15,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1296937305, now seen corresponding path program 1 times [2020-10-13 09:42:15,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:15,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833397178] [2020-10-13 09:42:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:16,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:16,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 09:42:16,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-13 09:42:16,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:42:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:42:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 09:42:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:42:16,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:16,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:16,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:16,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:16,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:42:16,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:16,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:16,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:42:16,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:16,519 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 09:42:16,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833397178] [2020-10-13 09:42:16,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:42:16,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:42:16,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906857796] [2020-10-13 09:42:16,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:42:16,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:16,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:42:16,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:42:16,551 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:42:29,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:29,538 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-13 09:42:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:29,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-13 09:42:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:29,588 INFO L225 Difference]: With dead ends: 1692 [2020-10-13 09:42:29,588 INFO L226 Difference]: Without dead ends: 1012 [2020-10-13 09:42:29,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-13 09:42:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-13 09:42:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:42:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-13 09:42:29,750 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 51 [2020-10-13 09:42:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:29,754 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-13 09:42:29,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:42:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-13 09:42:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 09:42:29,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:29,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:29,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:42:29,769 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:29,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:29,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2066902641, now seen corresponding path program 1 times [2020-10-13 09:42:29,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:29,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961920382] [2020-10-13 09:42:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:31,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:31,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:42:31,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:42:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-13 09:42:31,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:42:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:42:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:31,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:31,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:31,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:31,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:42:31,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:31,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:31,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:31,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:42:31,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:31,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:42:31,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:31,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:31,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:31,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:42:31,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:42:31,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961920382] [2020-10-13 09:42:31,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:31,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:42:31,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895593888] [2020-10-13 09:42:31,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:42:31,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:31,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:42:31,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:31,492 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-13 09:42:43,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:43,677 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-13 09:42:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:43,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 09:42:43,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:43,695 INFO L225 Difference]: With dead ends: 2884 [2020-10-13 09:42:43,695 INFO L226 Difference]: Without dead ends: 1888 [2020-10-13 09:42:43,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:42:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-13 09:42:43,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-13 09:42:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-13 09:42:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-13 09:42:43,791 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 122 [2020-10-13 09:42:43,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:43,794 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-13 09:42:43,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:42:43,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-13 09:42:43,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 09:42:43,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:43,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:43,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:42:43,809 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:43,809 INFO L82 PathProgramCache]: Analyzing trace with hash -598903647, now seen corresponding path program 1 times [2020-10-13 09:42:43,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:43,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691026733] [2020-10-13 09:42:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:44,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:45,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:45,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 09:42:45,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:42:45,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-13 09:42:45,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:42:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:42:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:45,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:45,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:42:45,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:45,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:45,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:45,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:45,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:42:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:42:45,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:42:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:42:45,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691026733] [2020-10-13 09:42:45,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:45,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:42:45,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981363422] [2020-10-13 09:42:45,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:42:45,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:45,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:42:45,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:45,348 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-13 09:42:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:57,638 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-13 09:42:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:57,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 09:42:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:57,654 INFO L225 Difference]: With dead ends: 4659 [2020-10-13 09:42:57,654 INFO L226 Difference]: Without dead ends: 2781 [2020-10-13 09:42:57,659 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 09:42:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-13 09:42:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-13 09:42:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-13 09:42:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3663 transitions. [2020-10-13 09:42:57,732 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3663 transitions. Word has length 125 [2020-10-13 09:42:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:57,733 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3663 transitions. [2020-10-13 09:42:57,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:42:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3663 transitions. [2020-10-13 09:42:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 09:42:57,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:57,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:57,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:42:57,736 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2139691167, now seen corresponding path program 1 times [2020-10-13 09:42:57,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:57,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816340718] [2020-10-13 09:42:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:57,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:58,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:58,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 09:42:58,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-13 09:42:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:42:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:42:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:42:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:58,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:58,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:58,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:58,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:42:58,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:42:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:58,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:58,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:58,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:42:58,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 09:42:58,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:42:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:42:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:42:58,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816340718] [2020-10-13 09:42:58,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:42:58,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:42:58,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262177873] [2020-10-13 09:42:58,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:42:58,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:58,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:42:58,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:42:58,676 INFO L87 Difference]: Start difference. First operand 2775 states and 3663 transitions. Second operand 7 states. [2020-10-13 09:43:13,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:13,729 INFO L93 Difference]: Finished difference Result 8286 states and 11100 transitions. [2020-10-13 09:43:13,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:43:13,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-13 09:43:13,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:13,756 INFO L225 Difference]: With dead ends: 8286 [2020-10-13 09:43:13,756 INFO L226 Difference]: Without dead ends: 4180 [2020-10-13 09:43:13,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:43:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2020-10-13 09:43:13,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 4161. [2020-10-13 09:43:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4161 states. [2020-10-13 09:43:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 4929 transitions. [2020-10-13 09:43:13,914 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 4929 transitions. Word has length 130 [2020-10-13 09:43:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:13,914 INFO L479 AbstractCegarLoop]: Abstraction has 4161 states and 4929 transitions. [2020-10-13 09:43:13,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:43:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 4929 transitions. [2020-10-13 09:43:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 09:43:13,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:13,918 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, 2, 2, 2, 2, 2, 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] [2020-10-13 09:43:13,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:43:13,919 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:13,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:13,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1032012349, now seen corresponding path program 1 times [2020-10-13 09:43:13,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:13,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561518238] [2020-10-13 09:43:13,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:15,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 09:43:15,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:43:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-13 09:43:15,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:43:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:43:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:15,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:15,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:15,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:15,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:15,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:43:15,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:15,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:15,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:15,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:15,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:15,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:43:15,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:43:15,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:15,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:43:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:15,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:15,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:43:15,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:43:15,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:43:15,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 09:43:15,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561518238] [2020-10-13 09:43:15,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:15,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:15,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184535245] [2020-10-13 09:43:15,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:15,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:15,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:15,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:15,544 INFO L87 Difference]: Start difference. First operand 4161 states and 4929 transitions. Second operand 5 states. [2020-10-13 09:43:24,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:24,365 INFO L93 Difference]: Finished difference Result 8758 states and 10621 transitions. [2020-10-13 09:43:24,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:24,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-13 09:43:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:24,393 INFO L225 Difference]: With dead ends: 8758 [2020-10-13 09:43:24,393 INFO L226 Difference]: Without dead ends: 4603 [2020-10-13 09:43:24,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:43:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4603 states. [2020-10-13 09:43:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4603 to 4599. [2020-10-13 09:43:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4599 states. [2020-10-13 09:43:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 5669 transitions. [2020-10-13 09:43:24,526 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 5669 transitions. Word has length 211 [2020-10-13 09:43:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:24,527 INFO L479 AbstractCegarLoop]: Abstraction has 4599 states and 5669 transitions. [2020-10-13 09:43:24,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 5669 transitions. [2020-10-13 09:43:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 09:43:24,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:24,531 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:43:24,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:43:24,532 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:24,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1832108417, now seen corresponding path program 1 times [2020-10-13 09:43:24,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:24,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754949310] [2020-10-13 09:43:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:29,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:29,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 09:43:29,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:43:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:43:29,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:43:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:43:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:29,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:29,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:29,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:29,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:43:29,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:29,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:29,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:43:29,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:29,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:43:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:29,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:30,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:30,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:43:30,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:30,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:43:30,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:43:30,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:43:30,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754949310] [2020-10-13 09:43:30,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:30,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:30,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426373370] [2020-10-13 09:43:30,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:30,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:30,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:30,244 INFO L87 Difference]: Start difference. First operand 4599 states and 5669 transitions. Second operand 5 states. [2020-10-13 09:43:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:40,328 INFO L93 Difference]: Finished difference Result 9212 states and 11363 transitions. [2020-10-13 09:43:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:40,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-13 09:43:40,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:40,354 INFO L225 Difference]: With dead ends: 9212 [2020-10-13 09:43:40,354 INFO L226 Difference]: Without dead ends: 4603 [2020-10-13 09:43:40,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:43:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4603 states. [2020-10-13 09:43:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4603 to 4599. [2020-10-13 09:43:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4599 states. [2020-10-13 09:43:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 5666 transitions. [2020-10-13 09:43:40,476 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 5666 transitions. Word has length 213 [2020-10-13 09:43:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:40,477 INFO L479 AbstractCegarLoop]: Abstraction has 4599 states and 5666 transitions. [2020-10-13 09:43:40,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 5666 transitions. [2020-10-13 09:43:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 09:43:40,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:40,481 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:43:40,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:43:40,481 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:40,482 INFO L82 PathProgramCache]: Analyzing trace with hash -366313463, now seen corresponding path program 1 times [2020-10-13 09:43:40,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:40,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974358477] [2020-10-13 09:43:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:40,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:40,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:40,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 09:43:40,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:40,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-13 09:43:40,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:40,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:40,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:43:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:43:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:41,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:43:41,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:41,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:41,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:43:41,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:43:41,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:43:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:43:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:43:41,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 09:43:41,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:43:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:43:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:43:41,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974358477] [2020-10-13 09:43:41,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:41,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:43:41,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763396328] [2020-10-13 09:43:41,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:43:41,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:41,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:43:41,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:43:41,568 INFO L87 Difference]: Start difference. First operand 4599 states and 5666 transitions. Second operand 7 states. [2020-10-13 09:43:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:53,897 INFO L93 Difference]: Finished difference Result 11405 states and 14199 transitions. [2020-10-13 09:43:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:43:53,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-13 09:43:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:53,934 INFO L225 Difference]: With dead ends: 11405 [2020-10-13 09:43:53,935 INFO L226 Difference]: Without dead ends: 6363 [2020-10-13 09:43:53,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:43:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6363 states. [2020-10-13 09:43:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6363 to 6355. [2020-10-13 09:43:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6355 states. [2020-10-13 09:43:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6355 states to 6355 states and 7467 transitions. [2020-10-13 09:43:54,117 INFO L78 Accepts]: Start accepts. Automaton has 6355 states and 7467 transitions. Word has length 217 [2020-10-13 09:43:54,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:54,118 INFO L479 AbstractCegarLoop]: Abstraction has 6355 states and 7467 transitions. [2020-10-13 09:43:54,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:43:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6355 states and 7467 transitions. [2020-10-13 09:43:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-13 09:43:54,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:54,127 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:43:54,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:43:54,128 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:54,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:54,128 INFO L82 PathProgramCache]: Analyzing trace with hash -379406980, now seen corresponding path program 1 times [2020-10-13 09:43:54,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:54,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689176854] [2020-10-13 09:43:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:54,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:56,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:59,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:59,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 09:43:59,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:43:59,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 09:43:59,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 272 [2020-10-13 09:43:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:43:59,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:59,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:59,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:59,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:59,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:43:59,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:59,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:59,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:59,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:43:59,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:59,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:43:59,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:59,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:59,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:43:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:59,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:59,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:43:59,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:59,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:43:59,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:59,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:59,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:59,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:59,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:43:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:59,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:59,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:43:59,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:43:59,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:43:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-13 09:43:59,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689176854] [2020-10-13 09:43:59,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:59,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:59,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415595939] [2020-10-13 09:43:59,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:59,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:59,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:59,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:59,950 INFO L87 Difference]: Start difference. First operand 6355 states and 7467 transitions. Second operand 5 states. [2020-10-13 09:44:12,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:12,384 INFO L93 Difference]: Finished difference Result 12732 states and 14964 transitions. [2020-10-13 09:44:12,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:12,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-13 09:44:12,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:12,420 INFO L225 Difference]: With dead ends: 12732 [2020-10-13 09:44:12,420 INFO L226 Difference]: Without dead ends: 6359 [2020-10-13 09:44:12,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:12,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6359 states. [2020-10-13 09:44:12,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6359 to 6355. [2020-10-13 09:44:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6355 states. [2020-10-13 09:44:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6355 states to 6355 states and 7464 transitions. [2020-10-13 09:44:12,567 INFO L78 Accepts]: Start accepts. Automaton has 6355 states and 7464 transitions. Word has length 309 [2020-10-13 09:44:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:12,568 INFO L479 AbstractCegarLoop]: Abstraction has 6355 states and 7464 transitions. [2020-10-13 09:44:12,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 6355 states and 7464 transitions. [2020-10-13 09:44:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-13 09:44:12,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:12,578 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:44:12,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:44:12,578 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:12,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2024142687, now seen corresponding path program 1 times [2020-10-13 09:44:12,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:12,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055602478] [2020-10-13 09:44:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:12,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:15,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:17,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:17,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 09:44:17,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:44:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 09:44:17,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 312 [2020-10-13 09:44:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:44:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:17,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:17,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:17,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:17,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:17,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:17,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:17,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:17,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:17,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:17,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:17,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:44:17,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:17,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:44:17,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:17,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:44:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:17,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:17,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:44:17,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:44:17,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:17,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:17,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:44:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:18,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:18,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:44:18,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 09:44:18,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:44:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-13 09:44:18,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055602478] [2020-10-13 09:44:18,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:18,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:18,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065482280] [2020-10-13 09:44:18,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:18,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:18,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:18,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:18,364 INFO L87 Difference]: Start difference. First operand 6355 states and 7464 transitions. Second operand 5 states. [2020-10-13 09:44:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:33,669 INFO L93 Difference]: Finished difference Result 15806 states and 18911 transitions. [2020-10-13 09:44:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:33,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 349 [2020-10-13 09:44:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:33,704 INFO L225 Difference]: With dead ends: 15806 [2020-10-13 09:44:33,705 INFO L226 Difference]: Without dead ends: 9012 [2020-10-13 09:44:33,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9012 states. [2020-10-13 09:44:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9012 to 8559. [2020-10-13 09:44:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8559 states. [2020-10-13 09:44:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8559 states to 8559 states and 10087 transitions. [2020-10-13 09:44:33,898 INFO L78 Accepts]: Start accepts. Automaton has 8559 states and 10087 transitions. Word has length 349 [2020-10-13 09:44:33,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:33,899 INFO L479 AbstractCegarLoop]: Abstraction has 8559 states and 10087 transitions. [2020-10-13 09:44:33,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 8559 states and 10087 transitions. [2020-10-13 09:44:33,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-13 09:44:33,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:33,908 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:44:33,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:44:33,909 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:33,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:33,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1773023206, now seen corresponding path program 1 times [2020-10-13 09:44:33,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:33,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78743125] [2020-10-13 09:44:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:34,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:34,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:38,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:38,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-13 09:44:38,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:44:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4563 [2020-10-13 09:44:38,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:44:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-13 09:44:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 09:44:38,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:38,907 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2020-10-13 09:44:39,063 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 30 [2020-10-13 09:44:39,245 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 29 [2020-10-13 09:44:39,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:39,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:39,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:39,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:39,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:39,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:39,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:39,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:39,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:39,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:39,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:44:39,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:44:39,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:44:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:39,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:39,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 09:44:39,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 09:44:39,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-13 09:44:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:44:39,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78743125] [2020-10-13 09:44:39,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:39,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:44:39,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955507988] [2020-10-13 09:44:39,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:44:39,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:39,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:44:39,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:44:39,977 INFO L87 Difference]: Start difference. First operand 8559 states and 10087 transitions. Second operand 8 states. [2020-10-13 09:44:43,615 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-13 09:44:43,914 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-13 09:44:44,324 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-13 09:44:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:52,142 INFO L93 Difference]: Finished difference Result 17248 states and 20333 transitions. [2020-10-13 09:44:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:44:52,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 348 [2020-10-13 09:44:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:52,178 INFO L225 Difference]: With dead ends: 17248 [2020-10-13 09:44:52,179 INFO L226 Difference]: Without dead ends: 8573 [2020-10-13 09:44:52,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:44:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8573 states. [2020-10-13 09:44:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8573 to 8559. [2020-10-13 09:44:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8559 states. [2020-10-13 09:44:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8559 states to 8559 states and 10068 transitions. [2020-10-13 09:44:52,365 INFO L78 Accepts]: Start accepts. Automaton has 8559 states and 10068 transitions. Word has length 348 [2020-10-13 09:44:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:52,367 INFO L479 AbstractCegarLoop]: Abstraction has 8559 states and 10068 transitions. [2020-10-13 09:44:52,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:44:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 8559 states and 10068 transitions. [2020-10-13 09:44:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-13 09:44:52,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:52,378 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:44:52,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:44:52,379 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:52,379 INFO L82 PathProgramCache]: Analyzing trace with hash 439945849, now seen corresponding path program 1 times [2020-10-13 09:44:52,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:52,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324777349] [2020-10-13 09:44:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:52,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:57,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:57,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-13 09:44:57,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:44:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:44:57,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-13 09:44:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:44:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:57,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:57,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:57,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:57,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:57,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:57,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:57,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:57,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:57,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:44:57,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:44:57,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:44:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:57,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:57,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:57,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:44:57,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:57,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 09:44:57,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:57,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:57,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:44:57,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:44:57,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-13 09:44:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:57,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:57,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:44:57,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:44:57,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 09:44:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2020-10-13 09:44:57,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324777349] [2020-10-13 09:44:57,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:57,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:57,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562532092] [2020-10-13 09:44:57,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:57,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:57,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:57,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:57,972 INFO L87 Difference]: Start difference. First operand 8559 states and 10068 transitions. Second operand 5 states. [2020-10-13 09:45:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:14,118 INFO L93 Difference]: Finished difference Result 22858 states and 27271 transitions. [2020-10-13 09:45:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:14,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 382 [2020-10-13 09:45:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:14,179 INFO L225 Difference]: With dead ends: 22858 [2020-10-13 09:45:14,179 INFO L226 Difference]: Without dead ends: 14305 [2020-10-13 09:45:14,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14305 states. [2020-10-13 09:45:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14305 to 13842. [2020-10-13 09:45:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13842 states. [2020-10-13 09:45:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13842 states to 13842 states and 16401 transitions. [2020-10-13 09:45:14,546 INFO L78 Accepts]: Start accepts. Automaton has 13842 states and 16401 transitions. Word has length 382 [2020-10-13 09:45:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:14,547 INFO L479 AbstractCegarLoop]: Abstraction has 13842 states and 16401 transitions. [2020-10-13 09:45:14,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 13842 states and 16401 transitions. [2020-10-13 09:45:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-13 09:45:14,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:14,569 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:45:14,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:45:14,570 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:14,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1309655500, now seen corresponding path program 1 times [2020-10-13 09:45:14,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:14,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594631463] [2020-10-13 09:45:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:14,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:14,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:16,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:19,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:19,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-13 09:45:19,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:45:19,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:45:19,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 435 [2020-10-13 09:45:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:45:19,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:19,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:19,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:19,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:19,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:45:19,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:19,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:19,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:45:19,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:19,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:45:19,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:19,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:19,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:45:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:20,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:45:20,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:45:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:20,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:45:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:20,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:20,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:45:20,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:20,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-13 09:45:20,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:20,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:20,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:20,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-13 09:45:20,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-13 09:45:20,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594631463] [2020-10-13 09:45:20,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:20,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:20,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931391909] [2020-10-13 09:45:20,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:20,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:20,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:20,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:20,938 INFO L87 Difference]: Start difference. First operand 13842 states and 16401 transitions. Second operand 5 states. [2020-10-13 09:45:28,156 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-13 09:45:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:34,990 INFO L93 Difference]: Finished difference Result 27712 states and 32841 transitions. [2020-10-13 09:45:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:35,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 472 [2020-10-13 09:45:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:35,033 INFO L225 Difference]: With dead ends: 27712 [2020-10-13 09:45:35,033 INFO L226 Difference]: Without dead ends: 13856 [2020-10-13 09:45:35,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13856 states. [2020-10-13 09:45:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13856 to 13842. [2020-10-13 09:45:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13842 states. [2020-10-13 09:45:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13842 states to 13842 states and 16390 transitions. [2020-10-13 09:45:35,284 INFO L78 Accepts]: Start accepts. Automaton has 13842 states and 16390 transitions. Word has length 472 [2020-10-13 09:45:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:35,285 INFO L479 AbstractCegarLoop]: Abstraction has 13842 states and 16390 transitions. [2020-10-13 09:45:35,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 13842 states and 16390 transitions. [2020-10-13 09:45:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-13 09:45:35,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:35,307 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:45:35,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:45:35,307 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:35,308 INFO L82 PathProgramCache]: Analyzing trace with hash -849699770, now seen corresponding path program 1 times [2020-10-13 09:45:35,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:35,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535318618] [2020-10-13 09:45:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:36,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:39,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:39,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-13 09:45:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:45:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4551 [2020-10-13 09:45:39,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 454 [2020-10-13 09:45:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:45:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:40,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:40,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:40,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:45:40,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:40,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:40,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:40,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:40,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:40,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:40,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:45:40,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:45:40,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:40,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:40,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:40,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:40,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:40,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:45:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:40,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-13 09:45:40,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-13 09:45:41,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-13 09:45:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:41,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:41,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:41,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:41,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:45:41,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:45:41,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:45:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:45:41,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535318618] [2020-10-13 09:45:41,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:41,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:41,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169099353] [2020-10-13 09:45:41,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:41,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:41,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:41,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:41,701 INFO L87 Difference]: Start difference. First operand 13842 states and 16390 transitions. Second operand 5 states.