/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/Problem03_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:25:01,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:25:01,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:25:01,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:25:01,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:25:01,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:25:01,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:25:01,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:25:01,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:25:01,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:25:01,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:25:01,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:25:01,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:25:01,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:25:01,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:25:01,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:25:01,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:25:01,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:25:01,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:25:01,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:25:01,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:25:01,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:25:01,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:25:01,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:25:01,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:25:01,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:25:01,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:25:01,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:25:01,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:25:01,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:25:01,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:25:01,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:25:01,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:25:01,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:25:01,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:25:01,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:25:01,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:25:01,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:25:01,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:25:01,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:25:01,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:25:01,569 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 06:25:01,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:25:01,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:25:01,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:25:01,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:25:01,593 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:25:01,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:25:01,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:25:01,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:25:01,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:25:01,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:25:01,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:25:01,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:25:01,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:25:01,594 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:25:01,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:25:01,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:25:01,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:25:01,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:25:01,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:25:01,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:25:01,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:25:01,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:25:01,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:25:01,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:25:01,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:25:01,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:25:01,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:25:01,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:25:01,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:25:01,597 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 06:25:01,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:25:01,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:25:01,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:25:01,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:25:01,949 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:25:01,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2020-10-13 06:25:02,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c89bb322c/3dd1b12f7b9a48d2b533a98af0f40009/FLAG419f78c2f [2020-10-13 06:25:02,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:25:02,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2020-10-13 06:25:02,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c89bb322c/3dd1b12f7b9a48d2b533a98af0f40009/FLAG419f78c2f [2020-10-13 06:25:02,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c89bb322c/3dd1b12f7b9a48d2b533a98af0f40009 [2020-10-13 06:25:02,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:25:02,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:25:02,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:02,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:25:02,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:25:02,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:02" (1/1) ... [2020-10-13 06:25:02,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126329ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:02, skipping insertion in model container [2020-10-13 06:25:02,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:02" (1/1) ... [2020-10-13 06:25:02,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:25:02,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:25:03,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:03,856 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:25:04,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:04,171 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:25:04,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04 WrapperNode [2020-10-13 06:25:04,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:04,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:25:04,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:25:04,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:25:04,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04" (1/1) ... [2020-10-13 06:25:04,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04" (1/1) ... [2020-10-13 06:25:04,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04" (1/1) ... [2020-10-13 06:25:04,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04" (1/1) ... [2020-10-13 06:25:04,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04" (1/1) ... [2020-10-13 06:25:04,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04" (1/1) ... [2020-10-13 06:25:04,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04" (1/1) ... [2020-10-13 06:25:04,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:25:04,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:25:04,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:25:04,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:25:04,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04" (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 06:25:04,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:25:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:25:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:25:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:25:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:25:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:25:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:25:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:25:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:25:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:25:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:25:06,491 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:25:06,492 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:25:06,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:06 BoogieIcfgContainer [2020-10-13 06:25:06,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:25:06,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:25:06,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:25:06,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:25:06,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:25:02" (1/3) ... [2020-10-13 06:25:06,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a51fe2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:06, skipping insertion in model container [2020-10-13 06:25:06,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:04" (2/3) ... [2020-10-13 06:25:06,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a51fe2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:06, skipping insertion in model container [2020-10-13 06:25:06,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:06" (3/3) ... [2020-10-13 06:25:06,507 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label44.c [2020-10-13 06:25:06,517 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:25:06,525 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:25:06,538 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:25:06,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:25:06,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:25:06,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:25:06,564 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:25:06,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:25:06,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:25:06,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:25:06,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:25:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:25:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-13 06:25:06,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:06,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:06,605 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:06,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:06,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1663544320, now seen corresponding path program 1 times [2020-10-13 06:25:06,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:06,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583022456] [2020-10-13 06:25:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:07,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:10,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:10,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 06:25:10,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:10,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3437 [2020-10-13 06:25:10,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:25:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:25:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:25:11,839 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-10-13 06:25:12,129 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 80 [2020-10-13 06:25:12,389 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2020-10-13 06:25:12,532 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-13 06:25:12,670 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-13 06:25:12,973 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:13,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:13,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:13,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:13,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:25:13,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:13,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:13,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:13,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:13,696 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 06:25:13,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583022456] [2020-10-13 06:25:13,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:25:13,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:25:13,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917508910] [2020-10-13 06:25:13,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:25:13,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:13,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:25:13,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:25:13,717 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:25:14,072 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:25:14,698 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-13 06:25:15,304 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-13 06:25:16,097 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2020-10-13 06:25:17,231 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2020-10-13 06:25:18,551 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 192 [2020-10-13 06:25:19,994 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 189 [2020-10-13 06:25:23,202 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 186 [2020-10-13 06:25:24,365 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 182 [2020-10-13 06:25:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:27,150 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:25:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:25:27,152 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 183 [2020-10-13 06:25:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:27,185 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:25:27,186 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:25:27,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:25:27,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:25:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:25:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:25:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:25:27,325 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 183 [2020-10-13 06:25:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:27,329 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:25:27,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:25:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:25:27,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 06:25:27,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:27,353 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:25:27,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:25:27,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:27,357 INFO L82 PathProgramCache]: Analyzing trace with hash -591733849, now seen corresponding path program 1 times [2020-10-13 06:25:27,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:27,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260634052] [2020-10-13 06:25:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:32,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:32,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 06:25:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4663 [2020-10-13 06:25:32,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:25:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:25:32,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:33,096 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-13 06:25:33,302 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-13 06:25:33,487 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-13 06:25:33,643 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-13 06:25:34,018 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:34,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:34,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:34,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:25:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:34,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:34,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:34,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:25:34,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:25:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:25:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:34,524 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-10-13 06:25:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:35,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260634052] [2020-10-13 06:25:35,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:35,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:25:35,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991050252] [2020-10-13 06:25:35,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:25:35,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:35,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:25:35,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:25:35,218 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:25:35,462 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 06:25:35,999 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2020-10-13 06:25:36,284 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-13 06:25:36,651 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-13 06:25:37,256 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 182 [2020-10-13 06:25:37,956 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 202 [2020-10-13 06:25:39,073 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 199 [2020-10-13 06:25:39,488 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-13 06:25:41,248 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 196 [2020-10-13 06:25:44,007 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 193 [2020-10-13 06:25:47,366 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 190 [2020-10-13 06:25:48,168 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 185 [2020-10-13 06:25:51,941 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 151 [2020-10-13 06:25:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:55,544 INFO L93 Difference]: Finished difference Result 1214 states and 1988 transitions. [2020-10-13 06:25:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 06:25:55,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 194 [2020-10-13 06:25:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:55,556 INFO L225 Difference]: With dead ends: 1214 [2020-10-13 06:25:55,556 INFO L226 Difference]: Without dead ends: 971 [2020-10-13 06:25:55,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2020-10-13 06:25:55,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-13 06:25:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 955. [2020-10-13 06:25:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-10-13 06:25:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1310 transitions. [2020-10-13 06:25:55,612 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1310 transitions. Word has length 194 [2020-10-13 06:25:55,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:55,613 INFO L479 AbstractCegarLoop]: Abstraction has 955 states and 1310 transitions. [2020-10-13 06:25:55,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:25:55,613 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1310 transitions. [2020-10-13 06:25:55,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 06:25:55,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:55,620 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:25:55,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:25:55,621 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1015321125, now seen corresponding path program 1 times [2020-10-13 06:25:55,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:55,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175754561] [2020-10-13 06:25:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:56,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:56,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 06:25:56,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:56,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-10-13 06:25:56,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:56,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:56,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:25:56,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:25:56,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:57,271 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:57,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:57,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:57,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:57,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:25:57,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:57,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:57,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:57,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:25:57,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:25:57,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:25:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:57,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175754561] [2020-10-13 06:25:57,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:57,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:25:57,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767491817] [2020-10-13 06:25:57,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:25:57,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:57,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:25:57,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:25:57,749 INFO L87 Difference]: Start difference. First operand 955 states and 1310 transitions. Second operand 5 states. [2020-10-13 06:25:58,115 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:26:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:00,462 INFO L93 Difference]: Finished difference Result 1611 states and 2380 transitions. [2020-10-13 06:26:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:00,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-13 06:26:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:00,476 INFO L225 Difference]: With dead ends: 1611 [2020-10-13 06:26:00,476 INFO L226 Difference]: Without dead ends: 945 [2020-10-13 06:26:00,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-10-13 06:26:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 943. [2020-10-13 06:26:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-13 06:26:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1236 transitions. [2020-10-13 06:26:00,533 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1236 transitions. Word has length 204 [2020-10-13 06:26:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:00,534 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1236 transitions. [2020-10-13 06:26:00,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1236 transitions. [2020-10-13 06:26:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-13 06:26:00,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:00,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:00,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:26:00,543 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:00,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:00,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1363465251, now seen corresponding path program 1 times [2020-10-13 06:26:00,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:00,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084331477] [2020-10-13 06:26:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:03,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:03,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 06:26:03,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3252 [2020-10-13 06:26:03,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:26:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:26:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:26:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:04,099 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:04,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:04,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:04,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:26:04,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:26:04,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:04,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 06:26:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:26:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:04,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084331477] [2020-10-13 06:26:04,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:26:04,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:26:04,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212543360] [2020-10-13 06:26:04,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:04,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:04,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:04,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:04,515 INFO L87 Difference]: Start difference. First operand 943 states and 1236 transitions. Second operand 7 states. [2020-10-13 06:26:04,728 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:06,723 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:26:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:07,671 INFO L93 Difference]: Finished difference Result 2282 states and 3127 transitions. [2020-10-13 06:26:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:07,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-13 06:26:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:07,688 INFO L225 Difference]: With dead ends: 2282 [2020-10-13 06:26:07,688 INFO L226 Difference]: Without dead ends: 1448 [2020-10-13 06:26:07,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2020-10-13 06:26:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1424. [2020-10-13 06:26:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2020-10-13 06:26:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1938 transitions. [2020-10-13 06:26:07,769 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1938 transitions. Word has length 215 [2020-10-13 06:26:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:07,770 INFO L479 AbstractCegarLoop]: Abstraction has 1424 states and 1938 transitions. [2020-10-13 06:26:07,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1938 transitions. [2020-10-13 06:26:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-13 06:26:07,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:07,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:07,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:26:07,778 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:07,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:07,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1911403895, now seen corresponding path program 1 times [2020-10-13 06:26:07,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:07,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338088390] [2020-10-13 06:26:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:09,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:09,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 06:26:09,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1586 [2020-10-13 06:26:09,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:09,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-13 06:26:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:26:09,698 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:09,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:09,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:09,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:09,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:26:09,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:09,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:26:09,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:26:09,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:26:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:10,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338088390] [2020-10-13 06:26:10,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:10,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:10,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282749727] [2020-10-13 06:26:10,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:10,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:10,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:10,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:10,014 INFO L87 Difference]: Start difference. First operand 1424 states and 1938 transitions. Second operand 5 states. [2020-10-13 06:26:10,308 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:12,443 INFO L93 Difference]: Finished difference Result 3873 states and 5528 transitions. [2020-10-13 06:26:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:12,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-13 06:26:12,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:12,460 INFO L225 Difference]: With dead ends: 3873 [2020-10-13 06:26:12,461 INFO L226 Difference]: Without dead ends: 2558 [2020-10-13 06:26:12,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2020-10-13 06:26:12,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2514. [2020-10-13 06:26:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2020-10-13 06:26:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3514 transitions. [2020-10-13 06:26:12,550 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3514 transitions. Word has length 218 [2020-10-13 06:26:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:12,551 INFO L479 AbstractCegarLoop]: Abstraction has 2514 states and 3514 transitions. [2020-10-13 06:26:12,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3514 transitions. [2020-10-13 06:26:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-13 06:26:12,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:12,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:12,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:26:12,560 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:12,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:12,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1578110183, now seen corresponding path program 1 times [2020-10-13 06:26:12,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:12,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890172673] [2020-10-13 06:26:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:14,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:14,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 06:26:14,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-10-13 06:26:14,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:14,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 06:26:14,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:14,473 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:14,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:14,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:14,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:14,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:14,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:14,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:14,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:14,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:14,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:14,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:14,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:26:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 06:26:14,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:26:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:14,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:26:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:14,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:14,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:26:14,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:14,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:26:14,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:26:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:14,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890172673] [2020-10-13 06:26:14,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:14,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:14,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473805532] [2020-10-13 06:26:14,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:14,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:14,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:14,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:14,955 INFO L87 Difference]: Start difference. First operand 2514 states and 3514 transitions. Second operand 7 states. [2020-10-13 06:26:15,483 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:16,678 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:18,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:18,389 INFO L93 Difference]: Finished difference Result 7198 states and 10884 transitions. [2020-10-13 06:26:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:18,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-13 06:26:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:18,421 INFO L225 Difference]: With dead ends: 7198 [2020-10-13 06:26:18,422 INFO L226 Difference]: Without dead ends: 4793 [2020-10-13 06:26:18,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:26:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2020-10-13 06:26:18,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4745. [2020-10-13 06:26:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4745 states. [2020-10-13 06:26:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 6676 transitions. [2020-10-13 06:26:18,595 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 6676 transitions. Word has length 228 [2020-10-13 06:26:18,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:18,595 INFO L479 AbstractCegarLoop]: Abstraction has 4745 states and 6676 transitions. [2020-10-13 06:26:18,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:18,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 6676 transitions. [2020-10-13 06:26:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-13 06:26:18,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:18,616 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:18,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:26:18,616 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:18,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1740295034, now seen corresponding path program 1 times [2020-10-13 06:26:18,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:18,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622187525] [2020-10-13 06:26:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:18,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:21,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 06:26:23,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:26:23,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 06:26:23,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:23,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 06:26:23,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 06:26:23,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:26:23,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:23,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:23,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:23,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:24,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:24,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:24,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:26:24,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 06:26:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 06:26:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:24,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:24,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:26:24,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:26:24,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:26:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:26:24,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622187525] [2020-10-13 06:26:24,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:24,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:24,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294589202] [2020-10-13 06:26:24,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:24,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:24,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:24,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:24,124 INFO L87 Difference]: Start difference. First operand 4745 states and 6676 transitions. Second operand 7 states. [2020-10-13 06:26:24,432 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:24,819 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:28,585 INFO L93 Difference]: Finished difference Result 17932 states and 29645 transitions. [2020-10-13 06:26:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:28,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-13 06:26:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:28,702 INFO L225 Difference]: With dead ends: 17932 [2020-10-13 06:26:28,702 INFO L226 Difference]: Without dead ends: 13296 [2020-10-13 06:26:28,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13296 states. [2020-10-13 06:26:29,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13296 to 13256. [2020-10-13 06:26:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13256 states. [2020-10-13 06:26:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13256 states to 13256 states and 20758 transitions. [2020-10-13 06:26:29,332 INFO L78 Accepts]: Start accepts. Automaton has 13256 states and 20758 transitions. Word has length 236 [2020-10-13 06:26:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:29,333 INFO L479 AbstractCegarLoop]: Abstraction has 13256 states and 20758 transitions. [2020-10-13 06:26:29,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 13256 states and 20758 transitions. [2020-10-13 06:26:29,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 06:26:29,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:29,367 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:29,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:26:29,368 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:29,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:29,368 INFO L82 PathProgramCache]: Analyzing trace with hash -756218847, now seen corresponding path program 1 times [2020-10-13 06:26:29,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:29,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502176087] [2020-10-13 06:26:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:31,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:34,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:34,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 06:26:34,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:26:34,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4891 [2020-10-13 06:26:34,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:34,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:34,456 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:34,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:34,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:34,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:34,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:34,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:34,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:34,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:34,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:34,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:34,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:34,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:34,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:26:34,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:26:34,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:26:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:26:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:34,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:34,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:34,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:26:34,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:34,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502176087] [2020-10-13 06:26:34,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:34,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:34,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455109674] [2020-10-13 06:26:34,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:34,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:34,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:34,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:34,751 INFO L87 Difference]: Start difference. First operand 13256 states and 20758 transitions. Second operand 7 states. [2020-10-13 06:26:34,883 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:36,591 INFO L93 Difference]: Finished difference Result 20830 states and 32804 transitions. [2020-10-13 06:26:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:26:36,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-13 06:26:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:36,663 INFO L225 Difference]: With dead ends: 20830 [2020-10-13 06:26:36,663 INFO L226 Difference]: Without dead ends: 12965 [2020-10-13 06:26:36,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:26:36,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12965 states. [2020-10-13 06:26:37,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12965 to 12965. [2020-10-13 06:26:37,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12965 states. [2020-10-13 06:26:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12965 states to 12965 states and 19346 transitions. [2020-10-13 06:26:37,191 INFO L78 Accepts]: Start accepts. Automaton has 12965 states and 19346 transitions. Word has length 242 [2020-10-13 06:26:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:37,191 INFO L479 AbstractCegarLoop]: Abstraction has 12965 states and 19346 transitions. [2020-10-13 06:26:37,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12965 states and 19346 transitions. [2020-10-13 06:26:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-13 06:26:37,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:37,225 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, 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] [2020-10-13 06:26:37,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:26:37,226 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:37,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:37,226 INFO L82 PathProgramCache]: Analyzing trace with hash 118337723, now seen corresponding path program 1 times [2020-10-13 06:26:37,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:37,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854915767] [2020-10-13 06:26:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:38,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:40,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:40,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 06:26:40,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:40,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3357 [2020-10-13 06:26:40,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 06:26:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:40,815 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:40,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:40,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:40,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:40,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:40,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:40,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:26:40,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:26:40,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:26:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:26:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:40,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:41,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:41,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:41,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 06:26:41,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:26:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:41,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854915767] [2020-10-13 06:26:41,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:41,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:41,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096985057] [2020-10-13 06:26:41,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:41,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:41,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:41,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:41,153 INFO L87 Difference]: Start difference. First operand 12965 states and 19346 transitions. Second operand 7 states. [2020-10-13 06:26:41,304 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:26:42,403 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:26:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:44,324 INFO L93 Difference]: Finished difference Result 37122 states and 56222 transitions. [2020-10-13 06:26:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:44,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-13 06:26:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:44,440 INFO L225 Difference]: With dead ends: 37122 [2020-10-13 06:26:44,441 INFO L226 Difference]: Without dead ends: 24278 [2020-10-13 06:26:44,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24278 states. [2020-10-13 06:26:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24278 to 24233. [2020-10-13 06:26:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24233 states. [2020-10-13 06:26:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24233 states to 24233 states and 36355 transitions. [2020-10-13 06:26:45,299 INFO L78 Accepts]: Start accepts. Automaton has 24233 states and 36355 transitions. Word has length 263 [2020-10-13 06:26:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:45,299 INFO L479 AbstractCegarLoop]: Abstraction has 24233 states and 36355 transitions. [2020-10-13 06:26:45,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 24233 states and 36355 transitions. [2020-10-13 06:26:45,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-13 06:26:45,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:45,356 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 06:26:45,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:26:45,357 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2034733384, now seen corresponding path program 1 times [2020-10-13 06:26:45,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:45,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184278670] [2020-10-13 06:26:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:50,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 06:26:50,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 06:26:50,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:26:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:26:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:26:50,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:50,619 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:50,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:26:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:26:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:50,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:26:50,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:50,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:26:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:26:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 06:26:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:50,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:26:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:26:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 84 proven. 35 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:26:50,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184278670] [2020-10-13 06:26:50,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:50,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:50,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514095651] [2020-10-13 06:26:50,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:50,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:50,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:50,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:50,969 INFO L87 Difference]: Start difference. First operand 24233 states and 36355 transitions. Second operand 7 states. [2020-10-13 06:26:51,105 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:26:51,903 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:54,116 INFO L93 Difference]: Finished difference Result 57668 states and 90395 transitions. [2020-10-13 06:26:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:54,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-13 06:26:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:54,287 INFO L225 Difference]: With dead ends: 57668 [2020-10-13 06:26:54,287 INFO L226 Difference]: Without dead ends: 33544 [2020-10-13 06:26:54,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33544 states. [2020-10-13 06:26:55,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33544 to 33212. [2020-10-13 06:26:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33212 states. [2020-10-13 06:26:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33212 states to 33212 states and 49681 transitions. [2020-10-13 06:26:55,306 INFO L78 Accepts]: Start accepts. Automaton has 33212 states and 49681 transitions. Word has length 271 [2020-10-13 06:26:55,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:55,307 INFO L479 AbstractCegarLoop]: Abstraction has 33212 states and 49681 transitions. [2020-10-13 06:26:55,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 33212 states and 49681 transitions. [2020-10-13 06:26:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-13 06:26:55,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:55,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:26:55,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:26:55,353 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1363424462, now seen corresponding path program 1 times [2020-10-13 06:26:55,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:55,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981089091] [2020-10-13 06:26:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:55,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:58,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 06:26:58,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3136 [2020-10-13 06:26:58,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:26:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-13 06:26:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:58,802 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:58,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:58,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:58,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:58,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:58,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:58,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:59,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:59,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:26:59,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:26:59,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:59,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:59,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:59,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:26:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:59,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981089091] [2020-10-13 06:26:59,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:59,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:59,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901339569] [2020-10-13 06:26:59,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:59,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:59,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:59,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:59,099 INFO L87 Difference]: Start difference. First operand 33212 states and 49681 transitions. Second operand 5 states. [2020-10-13 06:26:59,377 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:01,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:01,800 INFO L93 Difference]: Finished difference Result 66486 states and 102717 transitions. [2020-10-13 06:27:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:27:01,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2020-10-13 06:27:01,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:02,024 INFO L225 Difference]: With dead ends: 66486 [2020-10-13 06:27:02,024 INFO L226 Difference]: Without dead ends: 45581 [2020-10-13 06:27:02,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:27:02,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45581 states. [2020-10-13 06:27:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45581 to 45265. [2020-10-13 06:27:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45265 states. [2020-10-13 06:27:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45265 states to 45265 states and 67163 transitions. [2020-10-13 06:27:03,259 INFO L78 Accepts]: Start accepts. Automaton has 45265 states and 67163 transitions. Word has length 283 [2020-10-13 06:27:03,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:03,259 INFO L479 AbstractCegarLoop]: Abstraction has 45265 states and 67163 transitions. [2020-10-13 06:27:03,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:27:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 45265 states and 67163 transitions. [2020-10-13 06:27:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-13 06:27:03,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:03,314 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:03,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:27:03,315 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:03,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:03,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2059326037, now seen corresponding path program 1 times [2020-10-13 06:27:03,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:03,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466822689] [2020-10-13 06:27:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:03,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:08,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 06:27:08,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:27:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 06:27:08,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:27:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:08,557 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:08,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:08,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:08,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:08,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:27:08,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:08,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:08,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:08,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:08,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:08,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 06:27:08,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:27:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:08,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:08,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:08,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:27:08,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:08,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:08,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:27:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:08,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:08,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:27:08,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 06:27:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 118 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:27:08,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466822689] [2020-10-13 06:27:08,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:08,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:08,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135635579] [2020-10-13 06:27:08,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:08,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:08,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:08,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:08,923 INFO L87 Difference]: Start difference. First operand 45265 states and 67163 transitions. Second operand 7 states. [2020-10-13 06:27:09,364 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:10,217 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:27:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:12,670 INFO L93 Difference]: Finished difference Result 80528 states and 124784 transitions. [2020-10-13 06:27:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:12,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-13 06:27:12,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:13,002 INFO L225 Difference]: With dead ends: 80528 [2020-10-13 06:27:13,002 INFO L226 Difference]: Without dead ends: 53911 [2020-10-13 06:27:13,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:13,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53911 states. [2020-10-13 06:27:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53911 to 53114. [2020-10-13 06:27:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53114 states. [2020-10-13 06:27:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53114 states to 53114 states and 77399 transitions. [2020-10-13 06:27:14,465 INFO L78 Accepts]: Start accepts. Automaton has 53114 states and 77399 transitions. Word has length 303 [2020-10-13 06:27:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:14,465 INFO L479 AbstractCegarLoop]: Abstraction has 53114 states and 77399 transitions. [2020-10-13 06:27:14,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 53114 states and 77399 transitions. [2020-10-13 06:27:14,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 06:27:14,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:14,518 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:27:14,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:27:14,518 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:14,519 INFO L82 PathProgramCache]: Analyzing trace with hash 793894533, now seen corresponding path program 1 times [2020-10-13 06:27:14,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:14,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293401511] [2020-10-13 06:27:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:19,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:19,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 06:27:19,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:19,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4927 [2020-10-13 06:27:19,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:27:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:27:19,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:19,679 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:19,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:19,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:19,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:19,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:19,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:19,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:19,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:27:19,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:27:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:20,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 06:27:20,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 06:27:20,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 06:27:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:20,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293401511] [2020-10-13 06:27:20,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:20,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:20,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89084088] [2020-10-13 06:27:20,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:20,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:20,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:20,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:20,546 INFO L87 Difference]: Start difference. First operand 53114 states and 77399 transitions. Second operand 7 states. [2020-10-13 06:27:20,946 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:21,988 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:27:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:24,128 INFO L93 Difference]: Finished difference Result 122675 states and 183892 transitions. [2020-10-13 06:27:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:24,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-13 06:27:24,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:24,440 INFO L225 Difference]: With dead ends: 122675 [2020-10-13 06:27:24,441 INFO L226 Difference]: Without dead ends: 69698 [2020-10-13 06:27:24,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:24,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69698 states. [2020-10-13 06:27:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69698 to 66038. [2020-10-13 06:27:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66038 states. [2020-10-13 06:27:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66038 states to 66038 states and 90162 transitions. [2020-10-13 06:27:26,645 INFO L78 Accepts]: Start accepts. Automaton has 66038 states and 90162 transitions. Word has length 316 [2020-10-13 06:27:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:26,645 INFO L479 AbstractCegarLoop]: Abstraction has 66038 states and 90162 transitions. [2020-10-13 06:27:26,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 66038 states and 90162 transitions. [2020-10-13 06:27:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-13 06:27:26,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:26,735 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:26,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:27:26,736 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:26,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:26,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1447531555, now seen corresponding path program 1 times [2020-10-13 06:27:26,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:26,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981087252] [2020-10-13 06:27:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:26,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:30,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:30,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-13 06:27:30,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:30,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4150 [2020-10-13 06:27:30,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:30,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:27:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 06:27:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:31,120 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:31,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:31,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:31,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:31,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:31,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:31,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:31,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 06:27:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:27:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:31,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:31,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:31,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:31,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 06:27:31,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 06:27:31,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 06:27:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:31,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981087252] [2020-10-13 06:27:31,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:31,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:31,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064027732] [2020-10-13 06:27:31,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:31,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:31,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:31,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:31,607 INFO L87 Difference]: Start difference. First operand 66038 states and 90162 transitions. Second operand 7 states. [2020-10-13 06:27:32,182 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:32,822 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:27:34,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:34,943 INFO L93 Difference]: Finished difference Result 138186 states and 187488 transitions. [2020-10-13 06:27:34,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:34,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-13 06:27:34,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:35,207 INFO L225 Difference]: With dead ends: 138186 [2020-10-13 06:27:35,208 INFO L226 Difference]: Without dead ends: 75954 [2020-10-13 06:27:35,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:35,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75954 states. [2020-10-13 06:27:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75954 to 75625. [2020-10-13 06:27:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75625 states. [2020-10-13 06:27:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75625 states to 75625 states and 101860 transitions. [2020-10-13 06:27:37,189 INFO L78 Accepts]: Start accepts. Automaton has 75625 states and 101860 transitions. Word has length 342 [2020-10-13 06:27:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:37,190 INFO L479 AbstractCegarLoop]: Abstraction has 75625 states and 101860 transitions. [2020-10-13 06:27:37,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 75625 states and 101860 transitions. [2020-10-13 06:27:37,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-13 06:27:37,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:37,299 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:37,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:27:37,299 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:37,299 INFO L82 PathProgramCache]: Analyzing trace with hash -543055920, now seen corresponding path program 1 times [2020-10-13 06:27:37,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:37,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696477412] [2020-10-13 06:27:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:42,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:42,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-13 06:27:42,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 06:27:42,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:27:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:27:42,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:42,502 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:42,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:42,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:42,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:42,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:42,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:42,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:42,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:42,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:42,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:42,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:27:42,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:27:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:42,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:42,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:42,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:42,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:27:42,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:27:42,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:27:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:27:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:42,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:42,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:42,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 06:27:42,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:27:42,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 06:27:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 06:27:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:42,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:42,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:27:42,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:27:42,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:27:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 196 proven. 28 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 06:27:42,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696477412] [2020-10-13 06:27:42,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:42,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:42,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802836796] [2020-10-13 06:27:42,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:42,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:42,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:42,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:42,938 INFO L87 Difference]: Start difference. First operand 75625 states and 101860 transitions. Second operand 7 states. [2020-10-13 06:27:43,171 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:27:43,526 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:47,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:47,154 INFO L93 Difference]: Finished difference Result 143050 states and 191217 transitions. [2020-10-13 06:27:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:47,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-13 06:27:47,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:47,376 INFO L225 Difference]: With dead ends: 143050 [2020-10-13 06:27:47,376 INFO L226 Difference]: Without dead ends: 85684 [2020-10-13 06:27:47,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:47,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85684 states. [2020-10-13 06:27:48,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85684 to 85357. [2020-10-13 06:27:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85357 states. [2020-10-13 06:27:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85357 states to 85357 states and 112869 transitions. [2020-10-13 06:27:48,912 INFO L78 Accepts]: Start accepts. Automaton has 85357 states and 112869 transitions. Word has length 370 [2020-10-13 06:27:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:48,913 INFO L479 AbstractCegarLoop]: Abstraction has 85357 states and 112869 transitions. [2020-10-13 06:27:48,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 85357 states and 112869 transitions. [2020-10-13 06:27:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 06:27:49,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:49,055 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:27:49,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:27:49,055 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:49,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:49,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1627199612, now seen corresponding path program 1 times [2020-10-13 06:27:49,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:49,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647525700] [2020-10-13 06:27:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:50,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:54,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:54,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-13 06:27:54,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:54,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:27:54,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:54,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:27:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:27:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-13 06:27:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:54,439 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:54,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:54,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:54,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:54,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:54,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:27:54,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:54,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:54,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:54,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:27:54,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:54,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:54,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:54,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:27:54,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:54,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-13 06:27:54,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:27:54,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:55,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:27:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:55,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:27:55,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 06:27:55,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:27:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 194 proven. 36 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:27:55,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647525700] [2020-10-13 06:27:55,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:55,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:55,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058802891] [2020-10-13 06:27:55,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:55,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:55,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:55,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:55,642 INFO L87 Difference]: Start difference. First operand 85357 states and 112869 transitions. Second operand 7 states. [2020-10-13 06:27:55,792 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:27:56,406 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:00,589 INFO L93 Difference]: Finished difference Result 188139 states and 256377 transitions. [2020-10-13 06:28:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:28:00,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-13 06:28:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:01,053 INFO L225 Difference]: With dead ends: 188139 [2020-10-13 06:28:01,053 INFO L226 Difference]: Without dead ends: 106592 [2020-10-13 06:28:01,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:28:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106592 states. [2020-10-13 06:28:02,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106592 to 101513. [2020-10-13 06:28:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101513 states. [2020-10-13 06:28:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101513 states to 101513 states and 138452 transitions. [2020-10-13 06:28:03,057 INFO L78 Accepts]: Start accepts. Automaton has 101513 states and 138452 transitions. Word has length 376 [2020-10-13 06:28:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:03,057 INFO L479 AbstractCegarLoop]: Abstraction has 101513 states and 138452 transitions. [2020-10-13 06:28:03,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 101513 states and 138452 transitions. [2020-10-13 06:28:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-13 06:28:03,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:03,245 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, 3, 3, 3, 3, 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] [2020-10-13 06:28:03,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:28:03,246 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:03,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:03,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1754433874, now seen corresponding path program 1 times [2020-10-13 06:28:03,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:03,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557986626] [2020-10-13 06:28:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:05,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:10,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:10,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-13 06:28:10,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:10,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5169 [2020-10-13 06:28:10,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:10,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:10,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 06:28:10,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:28:10,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:11,101 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:11,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:11,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:11,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:11,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:28:11,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:11,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:11,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:11,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:11,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:28:11,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:11,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 06:28:11,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:11,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:11,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:28:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:11,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:11,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:11,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:28:11,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 06:28:11,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:11,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 06:28:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:11,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-13 06:28:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:11,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:11,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:28:11,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 06:28:11,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:28:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 06:28:11,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557986626] [2020-10-13 06:28:11,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:11,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:11,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852590520] [2020-10-13 06:28:11,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:11,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:11,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:11,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:11,919 INFO L87 Difference]: Start difference. First operand 101513 states and 138452 transitions. Second operand 7 states. [2020-10-13 06:28:12,456 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:28:12,803 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:28:16,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:16,750 INFO L93 Difference]: Finished difference Result 210409 states and 283363 transitions. [2020-10-13 06:28:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:16,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 390 [2020-10-13 06:28:16,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:17,034 INFO L225 Difference]: With dead ends: 210409 [2020-10-13 06:28:17,035 INFO L226 Difference]: Without dead ends: 103297 [2020-10-13 06:28:17,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:17,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103297 states. [2020-10-13 06:28:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103297 to 97124. [2020-10-13 06:28:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97124 states. [2020-10-13 06:28:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97124 states to 97124 states and 124985 transitions. [2020-10-13 06:28:19,105 INFO L78 Accepts]: Start accepts. Automaton has 97124 states and 124985 transitions. Word has length 390 [2020-10-13 06:28:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:19,105 INFO L479 AbstractCegarLoop]: Abstraction has 97124 states and 124985 transitions. [2020-10-13 06:28:19,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 97124 states and 124985 transitions. [2020-10-13 06:28:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-13 06:28:19,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:19,260 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:28:19,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:28:19,261 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:19,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:19,261 INFO L82 PathProgramCache]: Analyzing trace with hash 99432895, now seen corresponding path program 1 times [2020-10-13 06:28:19,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:19,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912456112] [2020-10-13 06:28:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:24,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:24,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-13 06:28:24,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:28:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 06:28:24,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 06:28:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:28:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:24,623 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:24,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:24,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:24,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:28:24,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:24,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:24,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:24,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:28:24,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 06:28:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:28:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:25,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:25,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 06:28:25,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:25,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:28:25,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:28:25,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:25,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-13 06:28:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:25,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:25,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:25,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 06:28:25,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 06:28:25,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:28:25,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:25,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-13 06:28:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:25,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:25,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:28:25,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:28:25,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:28:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:25,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 279 proven. 26 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-13 06:28:25,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912456112] [2020-10-13 06:28:25,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:25,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:25,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439468177] [2020-10-13 06:28:25,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:25,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:25,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:25,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:25,287 INFO L87 Difference]: Start difference. First operand 97124 states and 124985 transitions. Second operand 7 states. [2020-10-13 06:28:25,508 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:26,354 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:31,162 INFO L93 Difference]: Finished difference Result 264284 states and 343936 transitions. [2020-10-13 06:28:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:31,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-10-13 06:28:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:31,696 INFO L225 Difference]: With dead ends: 264284 [2020-10-13 06:28:31,696 INFO L226 Difference]: Without dead ends: 170669 [2020-10-13 06:28:31,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170669 states.