/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:20:04,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:20:04,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:20:04,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:20:04,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:20:04,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:20:04,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:20:04,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:20:04,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:20:04,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:20:04,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:20:04,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:20:04,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:20:04,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:20:04,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:20:04,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:20:04,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:20:04,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:20:04,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:20:04,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:20:04,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:20:04,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:20:04,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:20:04,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:20:04,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:20:04,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:20:04,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:20:04,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:20:04,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:20:04,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:20:04,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:20:04,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:20:04,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:20:04,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:20:04,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:20:04,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:20:04,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:20:04,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:20:04,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:20:04,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:20:04,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:20:04,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:20:04,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:20:04,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:20:04,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:20:04,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:20:04,605 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:20:04,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:20:04,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:20:04,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:20:04,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:20:04,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:20:04,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:20:04,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:20:04,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:20:04,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:20:04,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:20:04,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:20:04,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:20:04,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:20:04,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:20:04,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:20:04,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:20:04,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:20:04,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:20:04,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:20:04,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:20:04,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:20:04,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:20:04,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:20:04,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:20:04,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:20:04,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:20:04,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:20:04,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:20:04,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:20:04,988 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:20:04,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label31.c [2020-10-13 09:20:05,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d100b6726/25b065de2fd24fc698fc50df3e6c4a04/FLAG796b188f8 [2020-10-13 09:20:05,675 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:20:05,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label31.c [2020-10-13 09:20:05,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d100b6726/25b065de2fd24fc698fc50df3e6c4a04/FLAG796b188f8 [2020-10-13 09:20:05,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d100b6726/25b065de2fd24fc698fc50df3e6c4a04 [2020-10-13 09:20:05,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:20:05,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:20:05,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:20:05,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:20:05,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:20:05,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:20:05" (1/1) ... [2020-10-13 09:20:05,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbd1661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:05, skipping insertion in model container [2020-10-13 09:20:05,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:20:05" (1/1) ... [2020-10-13 09:20:05,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:20:05,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:20:06,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:20:06,896 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:20:07,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:20:07,257 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:20:07,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07 WrapperNode [2020-10-13 09:20:07,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:20:07,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:20:07,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:20:07,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:20:07,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07" (1/1) ... [2020-10-13 09:20:07,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07" (1/1) ... [2020-10-13 09:20:07,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07" (1/1) ... [2020-10-13 09:20:07,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07" (1/1) ... [2020-10-13 09:20:07,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07" (1/1) ... [2020-10-13 09:20:07,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07" (1/1) ... [2020-10-13 09:20:07,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07" (1/1) ... [2020-10-13 09:20:07,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:20:07,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:20:07,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:20:07,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:20:07,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:20:07,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:20:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:20:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:20:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:20:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:20:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:20:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:20:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:20:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:20:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:20:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:20:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:20:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:20:09,801 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:20:09,802 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:20:09,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:20:09 BoogieIcfgContainer [2020-10-13 09:20:09,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:20:09,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:20:09,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:20:09,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:20:09,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:20:05" (1/3) ... [2020-10-13 09:20:09,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f5e4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:20:09, skipping insertion in model container [2020-10-13 09:20:09,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:20:07" (2/3) ... [2020-10-13 09:20:09,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f5e4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:20:09, skipping insertion in model container [2020-10-13 09:20:09,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:20:09" (3/3) ... [2020-10-13 09:20:09,821 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label31.c [2020-10-13 09:20:09,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:20:09,844 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:20:09,859 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:20:09,888 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:20:09,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:20:09,888 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:20:09,889 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:20:09,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:20:09,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:20:09,889 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:20:09,889 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:20:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:20:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 09:20:09,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:09,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:09,928 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:09,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1091509315, now seen corresponding path program 1 times [2020-10-13 09:20:09,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:09,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793097226] [2020-10-13 09:20:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:10,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:10,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:20:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-13 09:20:10,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:20:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:20:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:20:10,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:20:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:10,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:10,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:10,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:10,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:20:10,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:10,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:20:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:20:10,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793097226] [2020-10-13 09:20:10,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:20:10,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:20:10,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33226153] [2020-10-13 09:20:10,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:20:10,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:10,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:20:10,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:20:10,477 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:20:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:14,190 INFO L93 Difference]: Finished difference Result 1169 states and 2164 transitions. [2020-10-13 09:20:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:14,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 09:20:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:14,234 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 09:20:14,235 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:20:14,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:20:14,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 692. [2020-10-13 09:20:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-13 09:20:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1014 transitions. [2020-10-13 09:20:14,402 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1014 transitions. Word has length 14 [2020-10-13 09:20:14,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:14,404 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 1014 transitions. [2020-10-13 09:20:14,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:20:14,404 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1014 transitions. [2020-10-13 09:20:14,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 09:20:14,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:14,415 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:20:14,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:20:14,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:14,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:14,417 INFO L82 PathProgramCache]: Analyzing trace with hash 432956112, now seen corresponding path program 1 times [2020-10-13 09:20:14,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:14,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597660575] [2020-10-13 09:20:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:15,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:15,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:20:15,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:15,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-13 09:20:15,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:20:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:20:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:15,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:15,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:15,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:15,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:20:15,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:15,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:15,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:15,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:20:15,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:15,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:20:15,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:20:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:20:15,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597660575] [2020-10-13 09:20:15,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:15,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:20:15,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733590284] [2020-10-13 09:20:15,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:20:15,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:20:15,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:15,532 INFO L87 Difference]: Start difference. First operand 692 states and 1014 transitions. Second operand 5 states. [2020-10-13 09:20:19,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:19,112 INFO L93 Difference]: Finished difference Result 1724 states and 2649 transitions. [2020-10-13 09:20:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:19,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 09:20:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:19,119 INFO L225 Difference]: With dead ends: 1724 [2020-10-13 09:20:19,119 INFO L226 Difference]: Without dead ends: 1038 [2020-10-13 09:20:19,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:20:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-13 09:20:19,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2020-10-13 09:20:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-13 09:20:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1429 transitions. [2020-10-13 09:20:19,159 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1429 transitions. Word has length 90 [2020-10-13 09:20:19,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:19,160 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1429 transitions. [2020-10-13 09:20:19,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:20:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1429 transitions. [2020-10-13 09:20:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 09:20:19,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:19,164 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:20:19,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:20:19,165 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:19,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1312545401, now seen corresponding path program 1 times [2020-10-13 09:20:19,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:19,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930206112] [2020-10-13 09:20:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:20,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 09:20:20,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:20,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-13 09:20:20,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 09:20:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:20:20,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:20,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:20,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:20,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:20,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:20,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:20:20,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 09:20:20,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:20:20,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:20:20,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930206112] [2020-10-13 09:20:20,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:20,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:20:20,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030405687] [2020-10-13 09:20:20,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:20:20,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:20,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:20:20,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:20,862 INFO L87 Difference]: Start difference. First operand 1034 states and 1429 transitions. Second operand 5 states. [2020-10-13 09:20:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:24,544 INFO L93 Difference]: Finished difference Result 2408 states and 3480 transitions. [2020-10-13 09:20:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:24,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-13 09:20:24,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:24,560 INFO L225 Difference]: With dead ends: 2408 [2020-10-13 09:20:24,560 INFO L226 Difference]: Without dead ends: 1380 [2020-10-13 09:20:24,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:20:24,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-13 09:20:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1376. [2020-10-13 09:20:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-10-13 09:20:24,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1849 transitions. [2020-10-13 09:20:24,605 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1849 transitions. Word has length 143 [2020-10-13 09:20:24,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:24,606 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 1849 transitions. [2020-10-13 09:20:24,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:20:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1849 transitions. [2020-10-13 09:20:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-13 09:20:24,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:24,612 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:24,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:20:24,612 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:24,613 INFO L82 PathProgramCache]: Analyzing trace with hash 217569791, now seen corresponding path program 1 times [2020-10-13 09:20:24,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:24,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848139291] [2020-10-13 09:20:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:24,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:27,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:29,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:29,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-13 09:20:29,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4436 [2020-10-13 09:20:29,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-13 09:20:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:20:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:29,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:29,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:29,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:29,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:29,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:20:29,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:29,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:29,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:29,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:29,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:20:29,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:29,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:20:29,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:29,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:29,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:20:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:29,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:29,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:29,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:20:29,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:20:29,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:20:29,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848139291] [2020-10-13 09:20:29,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:29,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:20:29,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453610438] [2020-10-13 09:20:29,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:20:29,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:29,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:20:29,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:29,429 INFO L87 Difference]: Start difference. First operand 1376 states and 1849 transitions. Second operand 5 states. [2020-10-13 09:20:33,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:33,114 INFO L93 Difference]: Finished difference Result 3434 states and 4745 transitions. [2020-10-13 09:20:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:33,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-13 09:20:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:33,131 INFO L225 Difference]: With dead ends: 3434 [2020-10-13 09:20:33,132 INFO L226 Difference]: Without dead ends: 2064 [2020-10-13 09:20:33,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:20:33,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2020-10-13 09:20:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 2060. [2020-10-13 09:20:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2060 states. [2020-10-13 09:20:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2766 transitions. [2020-10-13 09:20:33,194 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2766 transitions. Word has length 200 [2020-10-13 09:20:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:33,195 INFO L479 AbstractCegarLoop]: Abstraction has 2060 states and 2766 transitions. [2020-10-13 09:20:33,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:20:33,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2766 transitions. [2020-10-13 09:20:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-13 09:20:33,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:33,201 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:33,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:20:33,202 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1549787174, now seen corresponding path program 1 times [2020-10-13 09:20:33,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:33,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406213227] [2020-10-13 09:20:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:33,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:34,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:34,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:35,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-13 09:20:38,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:20:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:20:38,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 272 [2020-10-13 09:20:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:20:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:38,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:20:38,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:20:38,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:20:38,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:38,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:20:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:38,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:20:38,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:20:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:20:38,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:20:38,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:20:38,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-10-13 09:20:38,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406213227] [2020-10-13 09:20:38,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:38,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:20:38,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158055437] [2020-10-13 09:20:38,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:20:38,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:38,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:20:38,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:38,600 INFO L87 Difference]: Start difference. First operand 2060 states and 2766 transitions. Second operand 5 states. [2020-10-13 09:20:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:42,355 INFO L93 Difference]: Finished difference Result 4802 states and 6678 transitions. [2020-10-13 09:20:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:42,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-13 09:20:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:42,371 INFO L225 Difference]: With dead ends: 4802 [2020-10-13 09:20:42,371 INFO L226 Difference]: Without dead ends: 2748 [2020-10-13 09:20:42,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:20:42,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2020-10-13 09:20:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2402. [2020-10-13 09:20:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2402 states. [2020-10-13 09:20:42,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3150 transitions. [2020-10-13 09:20:42,448 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3150 transitions. Word has length 272 [2020-10-13 09:20:42,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:42,449 INFO L479 AbstractCegarLoop]: Abstraction has 2402 states and 3150 transitions. [2020-10-13 09:20:42,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:20:42,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3150 transitions. [2020-10-13 09:20:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-13 09:20:42,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:42,456 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:20:42,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:20:42,456 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash -602068093, now seen corresponding path program 1 times [2020-10-13 09:20:42,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:42,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145204078] [2020-10-13 09:20:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:42,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:47,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 09:20:47,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:20:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:20:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-13 09:20:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:20:47,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:47,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:47,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:47,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:47,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:47,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:47,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:20:47,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:47,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:20:47,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:47,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:20:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:47,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:47,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:47,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:20:47,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:20:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:47,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:47,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:20:47,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 09:20:47,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:20:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-13 09:20:48,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145204078] [2020-10-13 09:20:48,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:48,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:20:48,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043996262] [2020-10-13 09:20:48,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:20:48,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:48,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:20:48,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:48,038 INFO L87 Difference]: Start difference. First operand 2402 states and 3150 transitions. Second operand 5 states. [2020-10-13 09:20:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:52,483 INFO L93 Difference]: Finished difference Result 6839 states and 9110 transitions. [2020-10-13 09:20:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:52,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-13 09:20:52,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:52,510 INFO L225 Difference]: With dead ends: 6839 [2020-10-13 09:20:52,511 INFO L226 Difference]: Without dead ends: 4443 [2020-10-13 09:20:52,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:20:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2020-10-13 09:20:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 4102. [2020-10-13 09:20:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4102 states. [2020-10-13 09:20:52,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 5047 transitions. [2020-10-13 09:20:52,638 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 5047 transitions. Word has length 307 [2020-10-13 09:20:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:52,638 INFO L479 AbstractCegarLoop]: Abstraction has 4102 states and 5047 transitions. [2020-10-13 09:20:52,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:20:52,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 5047 transitions. [2020-10-13 09:20:52,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 09:20:52,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:52,648 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:20:52,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:20:52,649 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:52,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:52,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1311031474, now seen corresponding path program 1 times [2020-10-13 09:20:52,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:52,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513569367] [2020-10-13 09:20:52,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:52,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:54,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 09:20:57,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:20:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-13 09:20:57,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 324 [2020-10-13 09:20:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:20:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:57,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:20:57,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:57,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:20:57,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:20:57,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:20:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:20:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:57,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:20:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:58,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:58,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:58,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:20:58,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:58,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:20:58,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 09:20:58,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-13 09:20:58,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513569367] [2020-10-13 09:20:58,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:58,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:20:58,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159485853] [2020-10-13 09:20:58,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:20:58,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:58,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:20:58,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:58,212 INFO L87 Difference]: Start difference. First operand 4102 states and 5047 transitions. Second operand 5 states. [2020-10-13 09:21:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:02,006 INFO L93 Difference]: Finished difference Result 10584 states and 13362 transitions. [2020-10-13 09:21:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:21:02,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-13 09:21:02,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:02,041 INFO L225 Difference]: With dead ends: 10584 [2020-10-13 09:21:02,042 INFO L226 Difference]: Without dead ends: 6488 [2020-10-13 09:21:02,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:21:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2020-10-13 09:21:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 6147. [2020-10-13 09:21:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6147 states. [2020-10-13 09:21:02,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 7337 transitions. [2020-10-13 09:21:02,198 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 7337 transitions. Word has length 324 [2020-10-13 09:21:02,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:02,199 INFO L479 AbstractCegarLoop]: Abstraction has 6147 states and 7337 transitions. [2020-10-13 09:21:02,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:21:02,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 7337 transitions. [2020-10-13 09:21:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-13 09:21:02,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:02,220 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:02,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:21:02,221 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:02,221 INFO L82 PathProgramCache]: Analyzing trace with hash 547764397, now seen corresponding path program 1 times [2020-10-13 09:21:02,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:02,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806743459] [2020-10-13 09:21:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:02,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:03,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:04,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-13 09:21:07,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:21:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 09:21:07,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 551 [2020-10-13 09:21:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:21:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:07,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:07,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:07,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:21:07,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:21:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:21:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:07,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:21:07,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-13 09:21:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:07,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:21:07,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:07,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:21:07,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 09:21:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2020-10-13 09:21:07,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806743459] [2020-10-13 09:21:07,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:07,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:21:07,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293720263] [2020-10-13 09:21:07,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:21:07,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:07,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:21:07,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:21:07,857 INFO L87 Difference]: Start difference. First operand 6147 states and 7337 transitions. Second operand 5 states. [2020-10-13 09:21:15,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:15,270 INFO L93 Difference]: Finished difference Result 17385 states and 21026 transitions. [2020-10-13 09:21:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:21:15,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 551 [2020-10-13 09:21:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:15,331 INFO L225 Difference]: With dead ends: 17385 [2020-10-13 09:21:15,331 INFO L226 Difference]: Without dead ends: 11244 [2020-10-13 09:21:15,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:21:15,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11244 states. [2020-10-13 09:21:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11244 to 11240. [2020-10-13 09:21:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11240 states. [2020-10-13 09:21:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11240 states to 11240 states and 13400 transitions. [2020-10-13 09:21:15,646 INFO L78 Accepts]: Start accepts. Automaton has 11240 states and 13400 transitions. Word has length 551 [2020-10-13 09:21:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:15,648 INFO L479 AbstractCegarLoop]: Abstraction has 11240 states and 13400 transitions. [2020-10-13 09:21:15,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:21:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 11240 states and 13400 transitions. [2020-10-13 09:21:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2020-10-13 09:21:15,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:15,685 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:15,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:21:15,686 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:15,686 INFO L82 PathProgramCache]: Analyzing trace with hash 807877632, now seen corresponding path program 1 times [2020-10-13 09:21:15,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:15,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976266358] [2020-10-13 09:21:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:15,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:16,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 678 [2020-10-13 09:21:20,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:21:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 09:21:20,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 664 [2020-10-13 09:21:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:21:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:20,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:20,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:20,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:20,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:20,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:20,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:20,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:21:20,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:20,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:21:20,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:21:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:21,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:21,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:21,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:21,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:21:21,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:21,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:21,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-13 09:21:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:21,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:21,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:21:21,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 09:21:21,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-13 09:21:21,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2020-10-13 09:21:21,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976266358] [2020-10-13 09:21:21,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:21,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:21:21,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644427760] [2020-10-13 09:21:21,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:21:21,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:21,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:21:21,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:21:21,486 INFO L87 Difference]: Start difference. First operand 11240 states and 13400 transitions. Second operand 5 states. [2020-10-13 09:21:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:26,460 INFO L93 Difference]: Finished difference Result 25533 states and 31118 transitions. [2020-10-13 09:21:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:21:26,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 664 [2020-10-13 09:21:26,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:26,511 INFO L225 Difference]: With dead ends: 25533 [2020-10-13 09:21:26,511 INFO L226 Difference]: Without dead ends: 14299 [2020-10-13 09:21:26,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:21:26,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14299 states. [2020-10-13 09:21:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14299 to 13958. [2020-10-13 09:21:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13958 states. [2020-10-13 09:21:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13958 states to 13958 states and 16488 transitions. [2020-10-13 09:21:26,803 INFO L78 Accepts]: Start accepts. Automaton has 13958 states and 16488 transitions. Word has length 664 [2020-10-13 09:21:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:26,805 INFO L479 AbstractCegarLoop]: Abstraction has 13958 states and 16488 transitions. [2020-10-13 09:21:26,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:21:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 13958 states and 16488 transitions. [2020-10-13 09:21:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-13 09:21:26,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:26,833 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:26,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:21:26,834 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:26,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:26,834 INFO L82 PathProgramCache]: Analyzing trace with hash 274546337, now seen corresponding path program 1 times [2020-10-13 09:21:26,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:26,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178435086] [2020-10-13 09:21:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:26,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:27,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:31,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:31,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 693 [2020-10-13 09:21:31,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:21:31,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:21:31,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:21:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:21:31,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:32,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:32,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:32,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:32,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:32,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:21:32,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:32,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:21:32,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:21:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:21:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:32,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:32,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:32,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:21:32,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-13 09:21:32,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-13 09:21:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-13 09:21:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:33,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:21:33,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:21:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:21:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:33,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:33,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:33,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:33,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:21:33,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:21:33,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 113 proven. 272 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:21:33,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178435086] [2020-10-13 09:21:33,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:33,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:33,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496790417] [2020-10-13 09:21:33,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:33,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:33,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:33,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:33,568 INFO L87 Difference]: Start difference. First operand 13958 states and 16488 transitions. Second operand 7 states. [2020-10-13 09:21:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:37,597 INFO L93 Difference]: Finished difference Result 28393 states and 34888 transitions. [2020-10-13 09:21:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:21:37,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 677 [2020-10-13 09:21:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:37,666 INFO L225 Difference]: With dead ends: 28393 [2020-10-13 09:21:37,667 INFO L226 Difference]: Without dead ends: 14368 [2020-10-13 09:21:37,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:21:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14368 states. [2020-10-13 09:21:38,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14368 to 13651. [2020-10-13 09:21:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13651 states. [2020-10-13 09:21:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13651 states to 13651 states and 15697 transitions. [2020-10-13 09:21:38,051 INFO L78 Accepts]: Start accepts. Automaton has 13651 states and 15697 transitions. Word has length 677 [2020-10-13 09:21:38,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:38,051 INFO L479 AbstractCegarLoop]: Abstraction has 13651 states and 15697 transitions. [2020-10-13 09:21:38,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:38,051 INFO L276 IsEmpty]: Start isEmpty. Operand 13651 states and 15697 transitions. [2020-10-13 09:21:38,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2020-10-13 09:21:38,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:38,079 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:38,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:21:38,079 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:38,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:38,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1172219080, now seen corresponding path program 1 times [2020-10-13 09:21:38,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:38,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967267987] [2020-10-13 09:21:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:38,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 768 [2020-10-13 09:21:43,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:21:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 09:21:43,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:21:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:21:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:43,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:43,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:43,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:21:43,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:43,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:21:43,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 09:21:43,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:43,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 09:21:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:44,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:44,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:44,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:21:44,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-13 09:21:44,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:44,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:44,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:44,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-13 09:21:44,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:44,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-13 09:21:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:44,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:21:44,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:21:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:21:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:44,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:44,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:44,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:21:44,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:44,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:21:44,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:44,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 188 proven. 272 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-10-13 09:21:44,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967267987] [2020-10-13 09:21:44,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:44,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:44,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976282963] [2020-10-13 09:21:44,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:44,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:44,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:44,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:44,860 INFO L87 Difference]: Start difference. First operand 13651 states and 15697 transitions. Second operand 7 states. [2020-10-13 09:21:51,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:51,133 INFO L93 Difference]: Finished difference Result 27742 states and 33225 transitions. [2020-10-13 09:21:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:21:51,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 752 [2020-10-13 09:21:51,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:51,192 INFO L225 Difference]: With dead ends: 27742 [2020-10-13 09:21:51,193 INFO L226 Difference]: Without dead ends: 14020 [2020-10-13 09:21:51,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:21:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14020 states. [2020-10-13 09:21:51,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14020 to 13648. [2020-10-13 09:21:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13648 states. [2020-10-13 09:21:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13648 states to 13648 states and 15097 transitions. [2020-10-13 09:21:51,560 INFO L78 Accepts]: Start accepts. Automaton has 13648 states and 15097 transitions. Word has length 752 [2020-10-13 09:21:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:51,561 INFO L479 AbstractCegarLoop]: Abstraction has 13648 states and 15097 transitions. [2020-10-13 09:21:51,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:51,561 INFO L276 IsEmpty]: Start isEmpty. Operand 13648 states and 15097 transitions. [2020-10-13 09:21:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2020-10-13 09:21:51,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:51,596 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:51,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:21:51,596 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash -452755948, now seen corresponding path program 1 times [2020-10-13 09:21:51,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:51,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081381843] [2020-10-13 09:21:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:54,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:56,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:56,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 866 [2020-10-13 09:21:56,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:21:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 09:21:56,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:21:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:21:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:21:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:56,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:56,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:56,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:56,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:56,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:57,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:57,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:21:57,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:21:57,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-13 09:21:57,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-13 09:21:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:57,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:57,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:57,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:21:57,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-13 09:21:57,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-13 09:21:57,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:57,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-10-13 09:21:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:58,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:58,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:21:58,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:21:58,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:21:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:58,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:58,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:58,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:58,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:21:58,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:58,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:21:58,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:58,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:58,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 286 proven. 272 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 09:21:58,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081381843] [2020-10-13 09:21:58,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:58,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:58,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064381650] [2020-10-13 09:21:58,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:58,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:58,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:58,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:58,638 INFO L87 Difference]: Start difference. First operand 13648 states and 15097 transitions. Second operand 7 states. [2020-10-13 09:22:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:02,450 INFO L93 Difference]: Finished difference Result 27692 states and 30729 transitions. [2020-10-13 09:22:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:22:02,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 850 [2020-10-13 09:22:02,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:02,491 INFO L225 Difference]: With dead ends: 27692 [2020-10-13 09:22:02,491 INFO L226 Difference]: Without dead ends: 13702 [2020-10-13 09:22:02,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13702 states. [2020-10-13 09:22:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13702 to 13650. [2020-10-13 09:22:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13650 states. [2020-10-13 09:22:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13650 states to 13650 states and 14907 transitions. [2020-10-13 09:22:02,735 INFO L78 Accepts]: Start accepts. Automaton has 13650 states and 14907 transitions. Word has length 850 [2020-10-13 09:22:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:02,736 INFO L479 AbstractCegarLoop]: Abstraction has 13650 states and 14907 transitions. [2020-10-13 09:22:02,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 13650 states and 14907 transitions. [2020-10-13 09:22:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-13 09:22:02,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:02,783 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:22:02,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:22:02,783 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:02,784 INFO L82 PathProgramCache]: Analyzing trace with hash 895955768, now seen corresponding path program 1 times [2020-10-13 09:22:02,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:02,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459546157] [2020-10-13 09:22:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:07,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:07,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 979 [2020-10-13 09:22:07,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:22:07,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-13 09:22:07,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:07,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:07,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:22:07,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:22:07,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:08,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:08,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:08,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:08,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:08,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:22:08,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:08,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:08,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:08,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:08,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:08,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:08,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:22:08,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:22:08,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:22:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:08,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:22:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:08,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:08,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:22:08,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:08,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:22:08,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:08,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:08,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:08,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:22:08,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:08,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-13 09:22:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:08,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:08,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:22:08,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:22:08,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:08,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:08,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:22:08,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:08,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:08,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-13 09:22:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:08,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:08,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:22:08,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:22:08,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:22:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2020-10-13 09:22:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:08,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:08,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:08,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:22:08,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:08,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:22:08,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:22:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:08,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2020-10-13 09:22:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:08,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:08,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:22:08,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:08,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:22:08,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:22:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:08,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:22:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:08,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:08,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:22:08,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:08,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:22:08,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:08,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:08,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:08,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:08,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1542 backedges. 124 proven. 266 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-13 09:22:09,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459546157] [2020-10-13 09:22:09,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:09,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:09,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242128184] [2020-10-13 09:22:09,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:09,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:09,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:09,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:09,259 INFO L87 Difference]: Start difference. First operand 13650 states and 14907 transitions. Second operand 7 states. [2020-10-13 09:22:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:12,955 INFO L93 Difference]: Finished difference Result 28354 states and 30973 transitions. [2020-10-13 09:22:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:22:12,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 957 [2020-10-13 09:22:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:13,004 INFO L225 Difference]: With dead ends: 28354 [2020-10-13 09:22:13,004 INFO L226 Difference]: Without dead ends: 14710 [2020-10-13 09:22:13,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14710 states. [2020-10-13 09:22:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14710 to 14365. [2020-10-13 09:22:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14365 states. [2020-10-13 09:22:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14365 states to 14365 states and 15681 transitions. [2020-10-13 09:22:13,262 INFO L78 Accepts]: Start accepts. Automaton has 14365 states and 15681 transitions. Word has length 957 [2020-10-13 09:22:13,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:13,263 INFO L479 AbstractCegarLoop]: Abstraction has 14365 states and 15681 transitions. [2020-10-13 09:22:13,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:13,263 INFO L276 IsEmpty]: Start isEmpty. Operand 14365 states and 15681 transitions. [2020-10-13 09:22:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-13 09:22:13,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:13,294 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:22:13,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:22:13,295 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:13,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1796542587, now seen corresponding path program 1 times [2020-10-13 09:22:13,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:13,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428458937] [2020-10-13 09:22:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:13,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:18,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:18,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-13 09:22:18,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:22:18,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 09:22:18,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:22:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-13 09:22:18,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:18,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:18,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:18,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:18,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:22:18,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:18,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:18,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:18,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:22:18,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:22:18,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:22:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:22:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:18,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:19,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:22:19,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-13 09:22:19,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-13 09:22:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:19,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:22:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:19,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:19,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:22:19,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:22:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:19,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:19,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:22:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:19,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:22:19,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:19,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:22:19,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:22:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:19,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:22:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:19,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:19,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:22:19,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:19,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:22:19,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:19,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 228 proven. 386 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-10-13 09:22:19,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428458937] [2020-10-13 09:22:19,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:19,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:19,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932420828] [2020-10-13 09:22:19,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:19,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:19,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:19,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:19,989 INFO L87 Difference]: Start difference. First operand 14365 states and 15681 transitions. Second operand 7 states. [2020-10-13 09:22:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:24,875 INFO L93 Difference]: Finished difference Result 33365 states and 37207 transitions. [2020-10-13 09:22:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:22:24,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1030 [2020-10-13 09:22:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:24,927 INFO L225 Difference]: With dead ends: 33365 [2020-10-13 09:22:24,927 INFO L226 Difference]: Without dead ends: 19006 [2020-10-13 09:22:24,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19006 states. [2020-10-13 09:22:25,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19006 to 16760. [2020-10-13 09:22:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16760 states. [2020-10-13 09:22:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16760 states to 16760 states and 18270 transitions. [2020-10-13 09:22:25,288 INFO L78 Accepts]: Start accepts. Automaton has 16760 states and 18270 transitions. Word has length 1030 [2020-10-13 09:22:25,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:25,288 INFO L479 AbstractCegarLoop]: Abstraction has 16760 states and 18270 transitions. [2020-10-13 09:22:25,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:22:25,289 INFO L276 IsEmpty]: Start isEmpty. Operand 16760 states and 18270 transitions. [2020-10-13 09:22:25,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2020-10-13 09:22:25,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:25,314 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:25,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:22:25,315 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:25,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1072727048, now seen corresponding path program 1 times [2020-10-13 09:22:25,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:25,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000287731] [2020-10-13 09:22:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:25,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1063 [2020-10-13 09:22:30,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:22:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 09:22:30,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:22:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 746 [2020-10-13 09:22:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:22:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:30,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:22:30,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:22:30,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:22:30,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:30,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:22:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:22:30,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:22:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-13 09:22:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:22:30,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:22:30,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-13 09:22:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:22:30,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:22:30,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:30,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-10-13 09:22:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:30,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:30,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:22:30,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:30,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:22:30,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:22:30,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:30,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2020-10-13 09:22:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:31,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:32,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:32,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:22:32,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:22:32,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1799 [2020-10-13 09:22:32,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:22:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-13 09:22:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:32,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:22:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:32,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:32,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:22:32,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:22:32,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:32,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:22:32,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:32,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 09:22:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1839 backedges. 775 proven. 2 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2020-10-13 09:22:33,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000287731] [2020-10-13 09:22:33,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:33,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:22:33,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186648083] [2020-10-13 09:22:33,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:22:33,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:33,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:22:33,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:22:33,505 INFO L87 Difference]: Start difference. First operand 16760 states and 18270 transitions. Second operand 8 states. [2020-10-13 09:22:38,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:38,111 INFO L93 Difference]: Finished difference Result 33919 states and 37185 transitions. [2020-10-13 09:22:38,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:22:38,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1041 [2020-10-13 09:22:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:38,147 INFO L225 Difference]: With dead ends: 33919 [2020-10-13 09:22:38,148 INFO L226 Difference]: Without dead ends: 16822 [2020-10-13 09:22:38,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16822 states. [2020-10-13 09:22:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16822 to 16758. [2020-10-13 09:22:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16758 states. [2020-10-13 09:22:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16758 states to 16758 states and 18238 transitions. [2020-10-13 09:22:38,387 INFO L78 Accepts]: Start accepts. Automaton has 16758 states and 18238 transitions. Word has length 1041 [2020-10-13 09:22:38,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:38,388 INFO L479 AbstractCegarLoop]: Abstraction has 16758 states and 18238 transitions. [2020-10-13 09:22:38,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:22:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 16758 states and 18238 transitions. [2020-10-13 09:22:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2020-10-13 09:22:38,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:38,414 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:22:38,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:22:38,414 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:38,415 INFO L82 PathProgramCache]: Analyzing trace with hash 711913992, now seen corresponding path program 1 times [2020-10-13 09:22:38,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:38,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274781475] [2020-10-13 09:22:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:38,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:43,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:43,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1129 [2020-10-13 09:22:43,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:22:43,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:22:43,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 09:22:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:22:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-13 09:22:43,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:43,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:43,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:43,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:43,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:43,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:22:43,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:43,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:43,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:22:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:43,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:43,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:44,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:44,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:22:44,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:22:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-13 09:22:44,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:22:44,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:44,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:22:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:44,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:44,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:22:44,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:22:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:22:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:22:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:44,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:44,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:44,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:44,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:22:44,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:22:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:44,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-13 09:22:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:45,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:45,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:22:45,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:22:45,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:22:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:45,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:22:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:45,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:45,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:22:45,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:22:45,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 28 proven. 732 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2020-10-13 09:22:46,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274781475] [2020-10-13 09:22:46,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:46,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:22:46,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865655619] [2020-10-13 09:22:46,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:22:46,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:46,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:22:46,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:22:46,564 INFO L87 Difference]: Start difference. First operand 16758 states and 18238 transitions. Second operand 8 states. [2020-10-13 09:22:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:22:50,505 INFO L93 Difference]: Finished difference Result 33374 states and 37058 transitions. [2020-10-13 09:22:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:22:50,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1111 [2020-10-13 09:22:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:22:50,542 INFO L225 Difference]: With dead ends: 33374 [2020-10-13 09:22:50,542 INFO L226 Difference]: Without dead ends: 16959 [2020-10-13 09:22:50,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:22:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16959 states. [2020-10-13 09:22:50,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16959 to 16762. [2020-10-13 09:22:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16762 states. [2020-10-13 09:22:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16762 states to 16762 states and 18237 transitions. [2020-10-13 09:22:50,840 INFO L78 Accepts]: Start accepts. Automaton has 16762 states and 18237 transitions. Word has length 1111 [2020-10-13 09:22:50,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:22:50,841 INFO L479 AbstractCegarLoop]: Abstraction has 16762 states and 18237 transitions. [2020-10-13 09:22:50,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:22:50,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16762 states and 18237 transitions. [2020-10-13 09:22:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2020-10-13 09:22:50,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:22:50,871 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:22:50,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:22:50,872 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:22:50,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:22:50,872 INFO L82 PathProgramCache]: Analyzing trace with hash 790088924, now seen corresponding path program 1 times [2020-10-13 09:22:50,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:22:50,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714953873] [2020-10-13 09:22:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:22:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:51,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:56,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:56,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1152 [2020-10-13 09:22:56,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:22:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:22:56,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-13 09:22:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-13 09:22:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:22:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:56,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:56,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:22:56,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:56,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:22:56,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:56,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:56,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:56,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:56,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:22:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:56,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:56,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:22:56,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 09:22:56,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:56,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:22:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:56,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:22:56,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:22:56,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:22:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 09:22:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:56,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-13 09:22:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:56,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:56,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:22:56,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 09:22:56,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:22:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:22:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:22:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:56,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-13 09:22:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:56,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:56,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:22:56,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:22:56,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:22:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 827 [2020-10-13 09:22:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:56,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:56,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:22:56,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:56,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:22:56,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:22:56,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:56,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:22:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:22:57,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:22:57,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:22:57,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:22:57,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:22:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:22:57,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:22:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:22:57,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:22:57,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:22:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:22:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 338 proven. 284 refuted. 0 times theorem prover too weak. 1229 trivial. 0 not checked. [2020-10-13 09:22:57,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714953873] [2020-10-13 09:22:57,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:22:57,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:22:57,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062052818] [2020-10-13 09:22:57,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:22:57,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:22:57,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:22:57,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:22:57,540 INFO L87 Difference]: Start difference. First operand 16762 states and 18237 transitions. Second operand 7 states. [2020-10-13 09:23:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:01,610 INFO L93 Difference]: Finished difference Result 36222 states and 39638 transitions. [2020-10-13 09:23:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:23:01,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1132 [2020-10-13 09:23:01,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:01,652 INFO L225 Difference]: With dead ends: 36222 [2020-10-13 09:23:01,653 INFO L226 Difference]: Without dead ends: 19803 [2020-10-13 09:23:01,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:23:01,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19803 states. [2020-10-13 09:23:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19803 to 19462. [2020-10-13 09:23:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19462 states. [2020-10-13 09:23:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19462 states to 19462 states and 21012 transitions. [2020-10-13 09:23:01,916 INFO L78 Accepts]: Start accepts. Automaton has 19462 states and 21012 transitions. Word has length 1132 [2020-10-13 09:23:01,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:01,916 INFO L479 AbstractCegarLoop]: Abstraction has 19462 states and 21012 transitions. [2020-10-13 09:23:01,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:23:01,917 INFO L276 IsEmpty]: Start isEmpty. Operand 19462 states and 21012 transitions. [2020-10-13 09:23:01,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1312 [2020-10-13 09:23:01,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:01,945 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:23:01,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:23:01,946 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:01,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:01,946 INFO L82 PathProgramCache]: Analyzing trace with hash -752376996, now seen corresponding path program 1 times [2020-10-13 09:23:01,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:01,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74598470] [2020-10-13 09:23:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:05,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:07,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:07,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1333 [2020-10-13 09:23:07,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:23:07,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-13 09:23:07,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:23:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:23:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:07,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:07,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:07,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:07,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:07,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:07,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:07,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:07,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:23:07,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 09:23:07,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:23:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:07,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:23:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:07,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:07,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:23:07,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:07,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 09:23:07,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:23:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:08,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:23:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:08,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:08,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:08,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:23:08,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:08,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:23:08,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:08,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:08,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:23:08,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:08,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:08,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:23:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:08,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:08,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:23:08,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:23:08,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:23:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:08,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:23:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:08,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:08,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:23:08,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:08,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:23:08,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:23:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:23:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:08,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:08,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:08,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:23:08,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:23:08,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:23:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:08,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:23:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:08,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:08,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:08,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:23:08,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:08,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:23:08,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2671 backedges. 217 proven. 605 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2020-10-13 09:23:09,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74598470] [2020-10-13 09:23:09,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:09,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:23:09,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340030003] [2020-10-13 09:23:09,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:23:09,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:09,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:23:09,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:09,550 INFO L87 Difference]: Start difference. First operand 19462 states and 21012 transitions. Second operand 7 states. [2020-10-13 09:23:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:13,148 INFO L93 Difference]: Finished difference Result 39592 states and 42741 transitions. [2020-10-13 09:23:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:23:13,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1311 [2020-10-13 09:23:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:13,182 INFO L225 Difference]: With dead ends: 39592 [2020-10-13 09:23:13,183 INFO L226 Difference]: Without dead ends: 20473 [2020-10-13 09:23:13,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:23:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20473 states. [2020-10-13 09:23:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20473 to 20136. [2020-10-13 09:23:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20136 states. [2020-10-13 09:23:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20136 states to 20136 states and 21651 transitions. [2020-10-13 09:23:13,423 INFO L78 Accepts]: Start accepts. Automaton has 20136 states and 21651 transitions. Word has length 1311 [2020-10-13 09:23:13,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:13,423 INFO L479 AbstractCegarLoop]: Abstraction has 20136 states and 21651 transitions. [2020-10-13 09:23:13,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:23:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 20136 states and 21651 transitions. [2020-10-13 09:23:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1471 [2020-10-13 09:23:13,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:13,454 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:23:13,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:23:13,454 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:13,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1967571373, now seen corresponding path program 1 times [2020-10-13 09:23:13,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:13,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459862311] [2020-10-13 09:23:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:13,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:13,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:14,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:18,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:18,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1492 [2020-10-13 09:23:18,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:23:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:23:18,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:23:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:23:18,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:18,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:18,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:18,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:18,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:18,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:18,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:18,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:18,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:23:18,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:23:18,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-13 09:23:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:23:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:19,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:19,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:23:19,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:19,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-13 09:23:19,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:23:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:23:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:20,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:20,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:23:20,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:23:20,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:23:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:20,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:23:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:20,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:20,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:23:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:23:20,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:23:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:23:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:20,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:20,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:20,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:23:20,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:20,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:23:20,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 09:23:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:20,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1165 [2020-10-13 09:23:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:20,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:20,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:23:20,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:20,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:23:20,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:23:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:20,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:23:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:20,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:20,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:20,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:23:20,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:23:20,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3159 backedges. 302 proven. 849 refuted. 0 times theorem prover too weak. 2008 trivial. 0 not checked. [2020-10-13 09:23:21,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459862311] [2020-10-13 09:23:21,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:21,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:23:21,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820370484] [2020-10-13 09:23:21,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:23:21,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:21,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:23:21,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:23:21,932 INFO L87 Difference]: Start difference. First operand 20136 states and 21651 transitions. Second operand 8 states. [2020-10-13 09:23:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:26,196 INFO L93 Difference]: Finished difference Result 39931 states and 42963 transitions. [2020-10-13 09:23:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:23:26,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1470 [2020-10-13 09:23:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:26,228 INFO L225 Difference]: With dead ends: 39931 [2020-10-13 09:23:26,229 INFO L226 Difference]: Without dead ends: 20138 [2020-10-13 09:23:26,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:23:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20138 states. [2020-10-13 09:23:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20138 to 20138. [2020-10-13 09:23:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20138 states. [2020-10-13 09:23:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20138 states to 20138 states and 21657 transitions. [2020-10-13 09:23:26,468 INFO L78 Accepts]: Start accepts. Automaton has 20138 states and 21657 transitions. Word has length 1470 [2020-10-13 09:23:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:26,469 INFO L479 AbstractCegarLoop]: Abstraction has 20138 states and 21657 transitions. [2020-10-13 09:23:26,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:23:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 20138 states and 21657 transitions. [2020-10-13 09:23:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1485 [2020-10-13 09:23:26,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:26,502 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:23:26,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:23:26,503 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:26,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1750680246, now seen corresponding path program 1 times [2020-10-13 09:23:26,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:26,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137509677] [2020-10-13 09:23:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:31,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:31,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1508 [2020-10-13 09:23:31,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:23:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-13 09:23:31,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-13 09:23:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:23:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:31,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:31,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:23:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:31,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:31,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:31,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:23:31,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:31,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:23:31,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:31,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:31,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:31,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:23:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:32,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:32,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:23:32,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:32,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:23:32,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:32,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-13 09:23:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-13 09:23:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:32,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:32,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:23:32,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:32,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:23:32,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:23:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-13 09:23:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:32,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:32,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:23:32,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:23:32,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:23:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-13 09:23:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:32,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:32,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:23:32,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:23:32,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:23:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:32,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:32,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-13 09:23:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:32,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:32,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:23:32,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:32,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:23:32,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:32,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:32,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 09:23:32,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:32,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-13 09:23:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:33,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:23:33,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:23:33,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:23:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:23:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:33,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:23:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:23:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3566 backedges. 338 proven. 489 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2020-10-13 09:23:34,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137509677] [2020-10-13 09:23:34,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:34,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:23:34,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779428554] [2020-10-13 09:23:34,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:23:34,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:34,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:23:34,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:34,250 INFO L87 Difference]: Start difference. First operand 20138 states and 21657 transitions. Second operand 7 states. [2020-10-13 09:23:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:38,506 INFO L93 Difference]: Finished difference Result 39933 states and 42967 transitions. [2020-10-13 09:23:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:23:38,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1484 [2020-10-13 09:23:38,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:38,543 INFO L225 Difference]: With dead ends: 39933 [2020-10-13 09:23:38,544 INFO L226 Difference]: Without dead ends: 20138 [2020-10-13 09:23:38,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:23:38,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20138 states. [2020-10-13 09:23:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20138 to 20138. [2020-10-13 09:23:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20138 states. [2020-10-13 09:23:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20138 states to 20138 states and 21629 transitions. [2020-10-13 09:23:38,765 INFO L78 Accepts]: Start accepts. Automaton has 20138 states and 21629 transitions. Word has length 1484 [2020-10-13 09:23:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:38,766 INFO L479 AbstractCegarLoop]: Abstraction has 20138 states and 21629 transitions. [2020-10-13 09:23:38,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:23:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 20138 states and 21629 transitions. [2020-10-13 09:23:38,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1487 [2020-10-13 09:23:38,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:38,792 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:23:38,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:23:38,793 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:38,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:38,794 INFO L82 PathProgramCache]: Analyzing trace with hash 96775206, now seen corresponding path program 1 times [2020-10-13 09:23:38,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:38,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563104395] [2020-10-13 09:23:38,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:39,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:44,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:44,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1510 [2020-10-13 09:23:44,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:23:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-13 09:23:44,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-13 09:23:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:23:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:44,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:44,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:44,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:44,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:44,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:44,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:44,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:23:44,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:44,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-13 09:23:44,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:44,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:44,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:23:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:44,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:44,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:44,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:23:44,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:44,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:23:44,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:44,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:44,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:44,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-13 09:23:44,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:44,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-13 09:23:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:44,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:44,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:23:44,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:44,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:23:44,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:44,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:23:44,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-13 09:23:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:45,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:45,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:45,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:23:45,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:23:45,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:23:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-13 09:23:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:45,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:45,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:23:45,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:23:45,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:23:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0