/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem11_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:01:22,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:01:22,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:01:22,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:01:22,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:01:22,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:01:22,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:01:22,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:01:22,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:01:22,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:01:22,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:01:22,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:01:22,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:01:22,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:01:22,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:01:22,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:01:22,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:01:22,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:01:22,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:01:22,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:01:22,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:01:22,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:01:22,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:01:22,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:01:22,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:01:22,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:01:22,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:01:22,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:01:22,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:01:22,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:01:22,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:01:22,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:01:22,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:01:22,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:01:22,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:01:22,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:01:22,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:01:22,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:01:22,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:01:22,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:01:22,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:01:22,726 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 [2020-10-14 21:01:22,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:01:22,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:01:22,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:01:22,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:01:22,766 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:01:22,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:01:22,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:01:22,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:01:22,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:01:22,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:01:22,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:01:22,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:01:22,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:01:22,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:01:22,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:01:22,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:01:22,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:01:22,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:01:22,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:01:22,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:01:22,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:01:22,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:01:22,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:01:22,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:01:22,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:01:22,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:01:22,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:01:22,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:01:22,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:01:22,773 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:01:23,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:01:23,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:01:23,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:01:23,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:01:23,082 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:01:23,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40.c [2020-10-14 21:01:23,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80b1573ef/82d21d3e4f624aafbb7d3201449bb230/FLAG9615bf95b [2020-10-14 21:01:23,736 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:01:23,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label40.c [2020-10-14 21:01:23,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80b1573ef/82d21d3e4f624aafbb7d3201449bb230/FLAG9615bf95b [2020-10-14 21:01:23,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80b1573ef/82d21d3e4f624aafbb7d3201449bb230 [2020-10-14 21:01:23,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:01:23,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:01:23,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:01:23,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:01:23,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:01:23,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:01:23" (1/1) ... [2020-10-14 21:01:23,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ad355a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:23, skipping insertion in model container [2020-10-14 21:01:23,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:01:23" (1/1) ... [2020-10-14 21:01:23,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:01:24,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:01:24,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:01:24,938 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:01:25,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:01:25,273 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:01:25,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25 WrapperNode [2020-10-14 21:01:25,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:01:25,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:01:25,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:01:25,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:01:25,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25" (1/1) ... [2020-10-14 21:01:25,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25" (1/1) ... [2020-10-14 21:01:25,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25" (1/1) ... [2020-10-14 21:01:25,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25" (1/1) ... [2020-10-14 21:01:25,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25" (1/1) ... [2020-10-14 21:01:25,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25" (1/1) ... [2020-10-14 21:01:25,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25" (1/1) ... [2020-10-14 21:01:25,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:01:25,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:01:25,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:01:25,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:01:25,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:01:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:01:25,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:01:25,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:01:25,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:01:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:01:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:01:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:01:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:01:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:01:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:01:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:01:27,254 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:01:27,254 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:01:27,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:01:27 BoogieIcfgContainer [2020-10-14 21:01:27,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:01:27,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:01:27,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:01:27,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:01:27,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:01:23" (1/3) ... [2020-10-14 21:01:27,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3997ebf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:01:27, skipping insertion in model container [2020-10-14 21:01:27,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:25" (2/3) ... [2020-10-14 21:01:27,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3997ebf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:01:27, skipping insertion in model container [2020-10-14 21:01:27,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:01:27" (3/3) ... [2020-10-14 21:01:27,271 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label40.c [2020-10-14 21:01:27,282 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:01:27,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:01:27,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:01:27,333 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:01:27,334 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:01:27,334 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:01:27,334 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:01:27,334 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:01:27,335 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:01:27,335 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:01:27,335 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:01:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 21:01:27,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 21:01:27,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:27,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:27,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:27,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:27,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1611366285, now seen corresponding path program 1 times [2020-10-14 21:01:27,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:27,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136531217] [2020-10-14 21:01:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:28,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:28,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 21:01:28,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:28,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-14 21:01:28,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:28,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:01:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:01:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 21:01:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:01:28,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:28,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:28,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:28,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:28,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:01:28,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:28,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:01:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:01:28,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136531217] [2020-10-14 21:01:28,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:01:28,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:01:28,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353216472] [2020-10-14 21:01:28,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:01:28,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:28,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:01:28,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:01:28,212 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 21:01:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:30,591 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-14 21:01:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:01:30,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 21:01:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:30,626 INFO L225 Difference]: With dead ends: 791 [2020-10-14 21:01:30,627 INFO L226 Difference]: Without dead ends: 434 [2020-10-14 21:01:30,638 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 [2020-10-14 21:01:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-14 21:01:30,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-14 21:01:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-14 21:01:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-14 21:01:30,716 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 50 [2020-10-14 21:01:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:30,717 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-14 21:01:30,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:01:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-14 21:01:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 21:01:30,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:30,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:30,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:01:30,724 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:30,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1777722578, now seen corresponding path program 1 times [2020-10-14 21:01:30,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:30,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894495291] [2020-10-14 21:01:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:30,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:32,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:32,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:01:32,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:01:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1631 [2020-10-14 21:01:32,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:32,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:01:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:01:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:01:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:01:32,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:32,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:32,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:32,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:32,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:32,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:01:32,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:32,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:01:32,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:32,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:32,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:32,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:01:32,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:32,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 21:01:32,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:32,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:32,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:01:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 21:01:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:01:32,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894495291] [2020-10-14 21:01:32,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:01:32,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:01:32,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693803558] [2020-10-14 21:01:32,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:32,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:32,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:32,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:32,804 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 7 states. [2020-10-14 21:01:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:35,436 INFO L93 Difference]: Finished difference Result 1320 states and 2021 transitions. [2020-10-14 21:01:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:01:35,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-14 21:01:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:35,446 INFO L225 Difference]: With dead ends: 1320 [2020-10-14 21:01:35,446 INFO L226 Difference]: Without dead ends: 896 [2020-10-14 21:01:35,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:01:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-14 21:01:35,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 825. [2020-10-14 21:01:35,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-10-14 21:01:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1110 transitions. [2020-10-14 21:01:35,526 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1110 transitions. Word has length 122 [2020-10-14 21:01:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:35,526 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 1110 transitions. [2020-10-14 21:01:35,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1110 transitions. [2020-10-14 21:01:35,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 21:01:35,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:35,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:35,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:01:35,533 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:35,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:35,534 INFO L82 PathProgramCache]: Analyzing trace with hash 832347202, now seen corresponding path program 1 times [2020-10-14 21:01:35,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:35,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133817182] [2020-10-14 21:01:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:36,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:36,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 21:01:36,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:01:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-14 21:01:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:36,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:01:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:01:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:01:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:37,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:37,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:01:37,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:37,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:01:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:37,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:37,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:37,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:01:37,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:01:37,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:37,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:01:37,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:01:37,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133817182] [2020-10-14 21:01:37,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:01:37,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:01:37,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634572124] [2020-10-14 21:01:37,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:37,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:37,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:37,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:37,268 INFO L87 Difference]: Start difference. First operand 825 states and 1110 transitions. Second operand 7 states. [2020-10-14 21:01:39,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:39,526 INFO L93 Difference]: Finished difference Result 2069 states and 2752 transitions. [2020-10-14 21:01:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:01:39,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-14 21:01:39,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:39,534 INFO L225 Difference]: With dead ends: 2069 [2020-10-14 21:01:39,534 INFO L226 Difference]: Without dead ends: 1250 [2020-10-14 21:01:39,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:01:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-10-14 21:01:39,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1220. [2020-10-14 21:01:39,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2020-10-14 21:01:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1549 transitions. [2020-10-14 21:01:39,576 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1549 transitions. Word has length 130 [2020-10-14 21:01:39,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:39,577 INFO L479 AbstractCegarLoop]: Abstraction has 1220 states and 1549 transitions. [2020-10-14 21:01:39,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1549 transitions. [2020-10-14 21:01:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 21:01:39,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:39,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:39,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:01:39,581 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash -325905508, now seen corresponding path program 1 times [2020-10-14 21:01:39,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:39,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213336987] [2020-10-14 21:01:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:39,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:40,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:40,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:01:40,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-14 21:01:40,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:40,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:01:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 21:01:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:40,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:40,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:40,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:40,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:40,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:40,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:40,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:40,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:40,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:40,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:01:40,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:40,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 21:01:40,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:40,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:40,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:40,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:01:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:01:40,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213336987] [2020-10-14 21:01:40,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:40,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:01:40,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948664340] [2020-10-14 21:01:40,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:01:40,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:40,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:01:40,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:01:40,323 INFO L87 Difference]: Start difference. First operand 1220 states and 1549 transitions. Second operand 5 states. [2020-10-14 21:01:42,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:42,662 INFO L93 Difference]: Finished difference Result 2866 states and 3837 transitions. [2020-10-14 21:01:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:01:42,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 21:01:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:42,674 INFO L225 Difference]: With dead ends: 2866 [2020-10-14 21:01:42,675 INFO L226 Difference]: Without dead ends: 2030 [2020-10-14 21:01:42,677 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 [2020-10-14 21:01:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2020-10-14 21:01:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 2022. [2020-10-14 21:01:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2022 states. [2020-10-14 21:01:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2597 transitions. [2020-10-14 21:01:42,733 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2597 transitions. Word has length 181 [2020-10-14 21:01:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:42,734 INFO L479 AbstractCegarLoop]: Abstraction has 2022 states and 2597 transitions. [2020-10-14 21:01:42,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:01:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2597 transitions. [2020-10-14 21:01:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 21:01:42,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:42,739 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:01:42,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:01:42,739 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:42,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1768963916, now seen corresponding path program 1 times [2020-10-14 21:01:42,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:42,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073009864] [2020-10-14 21:01:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:42,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:45,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:45,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 21:01:45,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:01:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2369 [2020-10-14 21:01:45,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:45,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:01:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:01:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 21:01:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:45,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:45,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:45,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:01:45,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:45,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:45,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:01:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:45,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:45,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:45,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:01:45,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:45,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 21:01:45,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:45,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 21:01:45,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:01:45,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:01:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:45,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:45,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:01:45,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:45,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 21:01:45,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:45,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:01:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:01:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 72 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 21:01:45,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073009864] [2020-10-14 21:01:45,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:45,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:45,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072384300] [2020-10-14 21:01:45,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:01:45,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:45,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:01:45,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:01:45,928 INFO L87 Difference]: Start difference. First operand 2022 states and 2597 transitions. Second operand 8 states. [2020-10-14 21:01:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:48,529 INFO L93 Difference]: Finished difference Result 3754 states and 4982 transitions. [2020-10-14 21:01:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:01:48,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2020-10-14 21:01:48,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:48,541 INFO L225 Difference]: With dead ends: 3754 [2020-10-14 21:01:48,542 INFO L226 Difference]: Without dead ends: 2096 [2020-10-14 21:01:48,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:01:48,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2020-10-14 21:01:48,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2045. [2020-10-14 21:01:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2045 states. [2020-10-14 21:01:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2621 transitions. [2020-10-14 21:01:48,613 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2621 transitions. Word has length 239 [2020-10-14 21:01:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:48,613 INFO L479 AbstractCegarLoop]: Abstraction has 2045 states and 2621 transitions. [2020-10-14 21:01:48,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:01:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2621 transitions. [2020-10-14 21:01:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 21:01:48,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:48,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:01:48,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:01:48,620 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:48,621 INFO L82 PathProgramCache]: Analyzing trace with hash -877893893, now seen corresponding path program 1 times [2020-10-14 21:01:48,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:48,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403556247] [2020-10-14 21:01:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:49,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:50,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:50,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 21:01:50,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:01:50,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2286 [2020-10-14 21:01:50,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:50,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:01:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 21:01:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 21:01:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:51,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:51,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:51,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:51,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:51,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:51,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:51,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:51,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:01:51,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:51,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 21:01:51,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:51,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:51,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:51,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:51,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:01:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:01:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:51,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:01:51,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 21:01:51,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:51,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:01:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 118 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:01:51,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403556247] [2020-10-14 21:01:51,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:51,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:01:51,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709636015] [2020-10-14 21:01:51,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:01:51,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:51,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:01:51,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:01:51,586 INFO L87 Difference]: Start difference. First operand 2045 states and 2621 transitions. Second operand 6 states. [2020-10-14 21:01:54,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:54,145 INFO L93 Difference]: Finished difference Result 4584 states and 6422 transitions. [2020-10-14 21:01:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:01:54,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2020-10-14 21:01:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:54,163 INFO L225 Difference]: With dead ends: 4584 [2020-10-14 21:01:54,164 INFO L226 Difference]: Without dead ends: 2923 [2020-10-14 21:01:54,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:01:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-10-14 21:01:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2838. [2020-10-14 21:01:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2838 states. [2020-10-14 21:01:54,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3668 transitions. [2020-10-14 21:01:54,254 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3668 transitions. Word has length 246 [2020-10-14 21:01:54,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:54,255 INFO L479 AbstractCegarLoop]: Abstraction has 2838 states and 3668 transitions. [2020-10-14 21:01:54,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:01:54,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3668 transitions. [2020-10-14 21:01:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 21:01:54,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:54,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:01:54,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:01:54,260 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:54,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:54,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1089561137, now seen corresponding path program 1 times [2020-10-14 21:01:54,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:54,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277404133] [2020-10-14 21:01:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:54,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:55,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:55,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 21:01:55,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:01:55,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-10-14 21:01:55,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:55,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 21:01:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 21:01:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:55,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:01:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:55,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:55,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:55,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:01:55,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:01:55,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:55,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:01:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:01:55,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:01:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:55,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:01:55,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:55,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 21:01:55,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:55,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:01:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:01:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:01:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:01:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:01:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:55,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:01:55,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:01:55,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:01:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 21:01:55,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:01:55,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:01:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:01:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:01:55,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:01:55,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:01:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:01:55,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277404133] [2020-10-14 21:01:55,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:01:55,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:01:55,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668811672] [2020-10-14 21:01:55,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:01:55,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:01:55,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:01:55,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:01:55,740 INFO L87 Difference]: Start difference. First operand 2838 states and 3668 transitions. Second operand 7 states. [2020-10-14 21:01:58,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:01:58,060 INFO L93 Difference]: Finished difference Result 6944 states and 9279 transitions. [2020-10-14 21:01:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:01:58,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-14 21:01:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:01:58,081 INFO L225 Difference]: With dead ends: 6944 [2020-10-14 21:01:58,081 INFO L226 Difference]: Without dead ends: 4490 [2020-10-14 21:01:58,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:01:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2020-10-14 21:01:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 4459. [2020-10-14 21:01:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4459 states. [2020-10-14 21:01:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 5804 transitions. [2020-10-14 21:01:58,195 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 5804 transitions. Word has length 252 [2020-10-14 21:01:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:01:58,195 INFO L479 AbstractCegarLoop]: Abstraction has 4459 states and 5804 transitions. [2020-10-14 21:01:58,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:01:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 5804 transitions. [2020-10-14 21:01:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 21:01:58,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:01:58,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:01:58,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:01:58,203 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:01:58,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:01:58,203 INFO L82 PathProgramCache]: Analyzing trace with hash -152159793, now seen corresponding path program 1 times [2020-10-14 21:01:58,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:01:58,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14410165] [2020-10-14 21:01:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:01:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:01:58,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:01:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:01,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:01,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 21:02:01,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:02:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3153 [2020-10-14 21:02:01,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:01,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:02:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:02:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 21:02:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:02:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:01,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:01,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:01,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:02:01,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:01,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:01,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:01,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:02:01,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 21:02:01,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:01,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:01,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:01,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:02:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:02:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:01,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:01,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:02:01,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:01,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:02:01,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:01,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:02:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 21:02:01,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14410165] [2020-10-14 21:02:01,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:01,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:02:01,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405739118] [2020-10-14 21:02:01,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:02:01,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:01,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:02:01,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:02:01,918 INFO L87 Difference]: Start difference. First operand 4459 states and 5804 transitions. Second operand 7 states. [2020-10-14 21:02:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:05,905 INFO L93 Difference]: Finished difference Result 11250 states and 15666 transitions. [2020-10-14 21:02:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:02:05,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-14 21:02:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:05,940 INFO L225 Difference]: With dead ends: 11250 [2020-10-14 21:02:05,940 INFO L226 Difference]: Without dead ends: 6985 [2020-10-14 21:02:05,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:02:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6985 states. [2020-10-14 21:02:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6985 to 6559. [2020-10-14 21:02:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6559 states. [2020-10-14 21:02:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 8791 transitions. [2020-10-14 21:02:06,148 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 8791 transitions. Word has length 259 [2020-10-14 21:02:06,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:06,150 INFO L479 AbstractCegarLoop]: Abstraction has 6559 states and 8791 transitions. [2020-10-14 21:02:06,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:02:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 8791 transitions. [2020-10-14 21:02:06,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 21:02:06,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:06,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:02:06,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:02:06,158 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:06,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2134512577, now seen corresponding path program 1 times [2020-10-14 21:02:06,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:06,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993359885] [2020-10-14 21:02:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:07,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:07,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 21:02:07,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-10-14 21:02:07,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:07,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:02:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:02:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-14 21:02:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:07,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:07,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:02:07,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:07,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:02:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:07,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:07,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:07,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:07,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:02:07,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:07,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 21:02:07,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:07,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 21:02:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:02:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:08,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:08,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:02:08,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 21:02:08,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:08,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:02:08,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:08,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:02:08,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 21:02:08,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993359885] [2020-10-14 21:02:08,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:08,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:02:08,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031642711] [2020-10-14 21:02:08,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:02:08,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:08,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:02:08,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:02:08,421 INFO L87 Difference]: Start difference. First operand 6559 states and 8791 transitions. Second operand 8 states. [2020-10-14 21:02:11,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:11,712 INFO L93 Difference]: Finished difference Result 17102 states and 24001 transitions. [2020-10-14 21:02:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:02:11,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-14 21:02:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:11,769 INFO L225 Difference]: With dead ends: 17102 [2020-10-14 21:02:11,769 INFO L226 Difference]: Without dead ends: 10927 [2020-10-14 21:02:11,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:02:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10927 states. [2020-10-14 21:02:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10927 to 10857. [2020-10-14 21:02:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10857 states. [2020-10-14 21:02:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10857 states to 10857 states and 14251 transitions. [2020-10-14 21:02:12,045 INFO L78 Accepts]: Start accepts. Automaton has 10857 states and 14251 transitions. Word has length 260 [2020-10-14 21:02:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:12,046 INFO L479 AbstractCegarLoop]: Abstraction has 10857 states and 14251 transitions. [2020-10-14 21:02:12,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:02:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 10857 states and 14251 transitions. [2020-10-14 21:02:12,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 21:02:12,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:12,063 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:12,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:02:12,064 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:12,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:12,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1727128070, now seen corresponding path program 1 times [2020-10-14 21:02:12,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:12,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495338846] [2020-10-14 21:02:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:14,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:14,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 21:02:14,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:02:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2238 [2020-10-14 21:02:14,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:14,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-14 21:02:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:02:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:02:14,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:14,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:14,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:14,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:14,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:02:14,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:14,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:14,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:14,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:02:14,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 21:02:14,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:14,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:14,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:02:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:14,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:14,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:14,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:02:14,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 21:02:14,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:14,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 21:02:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:14,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 21:02:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:14,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:14,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:02:14,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:14,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:02:14,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:14,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:02:14,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:02:14,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495338846] [2020-10-14 21:02:14,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:14,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:02:14,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70235448] [2020-10-14 21:02:14,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:02:14,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:14,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:02:14,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:02:14,853 INFO L87 Difference]: Start difference. First operand 10857 states and 14251 transitions. Second operand 7 states. [2020-10-14 21:02:18,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:18,215 INFO L93 Difference]: Finished difference Result 20783 states and 28266 transitions. [2020-10-14 21:02:18,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:02:18,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-14 21:02:18,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:18,252 INFO L225 Difference]: With dead ends: 20783 [2020-10-14 21:02:18,252 INFO L226 Difference]: Without dead ends: 12266 [2020-10-14 21:02:18,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:02:18,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12266 states. [2020-10-14 21:02:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12266 to 11664. [2020-10-14 21:02:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11664 states. [2020-10-14 21:02:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11664 states to 11664 states and 15267 transitions. [2020-10-14 21:02:18,541 INFO L78 Accepts]: Start accepts. Automaton has 11664 states and 15267 transitions. Word has length 334 [2020-10-14 21:02:18,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:18,542 INFO L479 AbstractCegarLoop]: Abstraction has 11664 states and 15267 transitions. [2020-10-14 21:02:18,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:02:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11664 states and 15267 transitions. [2020-10-14 21:02:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-14 21:02:18,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:18,571 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:18,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:02:18,571 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:18,572 INFO L82 PathProgramCache]: Analyzing trace with hash 249720626, now seen corresponding path program 1 times [2020-10-14 21:02:18,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:18,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473194729] [2020-10-14 21:02:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:20,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:20,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-14 21:02:20,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1726 [2020-10-14 21:02:20,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:20,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 21:02:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:02:20,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:20,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:20,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:20,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:20,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:20,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:02:20,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:20,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:20,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:20,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:20,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:20,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:02:20,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:02:20,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:20,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:20,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:02:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:20,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:20,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:02:20,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:20,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 21:02:20,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:20,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:02:20,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-14 21:02:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:20,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:20,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:02:20,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:20,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 21:02:20,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:20,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:02:20,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 21:02:20,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473194729] [2020-10-14 21:02:20,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:20,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:02:20,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170934752] [2020-10-14 21:02:20,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:02:20,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:20,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:02:20,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:02:20,854 INFO L87 Difference]: Start difference. First operand 11664 states and 15267 transitions. Second operand 7 states. [2020-10-14 21:02:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:23,733 INFO L93 Difference]: Finished difference Result 21994 states and 29090 transitions. [2020-10-14 21:02:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:02:23,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-14 21:02:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:23,778 INFO L225 Difference]: With dead ends: 21994 [2020-10-14 21:02:23,778 INFO L226 Difference]: Without dead ends: 12672 [2020-10-14 21:02:23,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:02:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12672 states. [2020-10-14 21:02:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12672 to 12432. [2020-10-14 21:02:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12432 states. [2020-10-14 21:02:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12432 states to 12432 states and 16105 transitions. [2020-10-14 21:02:24,080 INFO L78 Accepts]: Start accepts. Automaton has 12432 states and 16105 transitions. Word has length 345 [2020-10-14 21:02:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:24,081 INFO L479 AbstractCegarLoop]: Abstraction has 12432 states and 16105 transitions. [2020-10-14 21:02:24,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:02:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 12432 states and 16105 transitions. [2020-10-14 21:02:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-14 21:02:24,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:24,102 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:24,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:02:24,103 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:24,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:24,104 INFO L82 PathProgramCache]: Analyzing trace with hash 749761616, now seen corresponding path program 1 times [2020-10-14 21:02:24,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:24,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177870473] [2020-10-14 21:02:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:24,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:29,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:29,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-14 21:02:29,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:02:29,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 21:02:29,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:29,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:02:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:02:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 21:02:29,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:29,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:29,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:29,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:29,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:29,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:02:29,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:29,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:29,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:29,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:29,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:29,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:29,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:02:29,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:29,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 21:02:29,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:29,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:02:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:29,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:02:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:29,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:29,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:29,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:02:29,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 21:02:29,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:29,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:02:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:02:29,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 21:02:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:29,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:29,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:02:29,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 21:02:29,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:29,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:29,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:02:29,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:29,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:02:29,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 276 proven. 19 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 21:02:30,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177870473] [2020-10-14 21:02:30,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:30,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:02:30,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050214167] [2020-10-14 21:02:30,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:02:30,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:30,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:02:30,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:02:30,115 INFO L87 Difference]: Start difference. First operand 12432 states and 16105 transitions. Second operand 8 states. [2020-10-14 21:02:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:34,673 INFO L93 Difference]: Finished difference Result 32486 states and 45637 transitions. [2020-10-14 21:02:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:02:34,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 347 [2020-10-14 21:02:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:34,761 INFO L225 Difference]: With dead ends: 32486 [2020-10-14 21:02:34,762 INFO L226 Difference]: Without dead ends: 19626 [2020-10-14 21:02:34,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:02:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19626 states. [2020-10-14 21:02:35,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19626 to 18452. [2020-10-14 21:02:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18452 states. [2020-10-14 21:02:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18452 states to 18452 states and 23751 transitions. [2020-10-14 21:02:35,214 INFO L78 Accepts]: Start accepts. Automaton has 18452 states and 23751 transitions. Word has length 347 [2020-10-14 21:02:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:35,215 INFO L479 AbstractCegarLoop]: Abstraction has 18452 states and 23751 transitions. [2020-10-14 21:02:35,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:02:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 18452 states and 23751 transitions. [2020-10-14 21:02:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-14 21:02:35,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:35,239 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:35,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:02:35,239 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:35,240 INFO L82 PathProgramCache]: Analyzing trace with hash -2048218785, now seen corresponding path program 1 times [2020-10-14 21:02:35,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:35,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661945281] [2020-10-14 21:02:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:36,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:36,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-14 21:02:36,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-10-14 21:02:36,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:36,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 21:02:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:02:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:36,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:36,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:36,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:36,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:02:36,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:36,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:36,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:36,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:36,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:36,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:36,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:36,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:36,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:02:36,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:36,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 21:02:36,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:36,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:02:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:36,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:36,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:02:36,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:36,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 21:02:36,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:36,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:02:36,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:36,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:02:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:37,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:02:37,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 21:02:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:37,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:02:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:02:37,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661945281] [2020-10-14 21:02:37,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:37,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:02:37,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842175540] [2020-10-14 21:02:37,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:02:37,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:37,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:02:37,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:02:37,422 INFO L87 Difference]: Start difference. First operand 18452 states and 23751 transitions. Second operand 7 states. [2020-10-14 21:02:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:40,323 INFO L93 Difference]: Finished difference Result 38504 states and 50185 transitions. [2020-10-14 21:02:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:02:40,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-14 21:02:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:40,375 INFO L225 Difference]: With dead ends: 38504 [2020-10-14 21:02:40,375 INFO L226 Difference]: Without dead ends: 19852 [2020-10-14 21:02:40,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:02:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19852 states. [2020-10-14 21:02:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19852 to 19620. [2020-10-14 21:02:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19620 states. [2020-10-14 21:02:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19620 states to 19620 states and 25083 transitions. [2020-10-14 21:02:40,765 INFO L78 Accepts]: Start accepts. Automaton has 19620 states and 25083 transitions. Word has length 356 [2020-10-14 21:02:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:40,767 INFO L479 AbstractCegarLoop]: Abstraction has 19620 states and 25083 transitions. [2020-10-14 21:02:40,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:02:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 19620 states and 25083 transitions. [2020-10-14 21:02:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-14 21:02:40,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:40,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:02:40,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:02:40,786 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:40,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:40,787 INFO L82 PathProgramCache]: Analyzing trace with hash 309264218, now seen corresponding path program 1 times [2020-10-14 21:02:40,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:40,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109444928] [2020-10-14 21:02:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:40,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:41,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:41,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-14 21:02:41,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-14 21:02:41,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:41,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-14 21:02:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 21:02:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:41,473 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-14 21:02:41,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:41,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:41,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:41,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:02:41,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:41,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:41,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:41,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:41,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:41,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:02:41,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 21:02:41,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:41,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:41,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:02:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:41,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:41,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 21:02:41,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 21:02:41,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:41,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 21:02:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 21:02:41,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109444928] [2020-10-14 21:02:41,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:41,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:02:41,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027309877] [2020-10-14 21:02:41,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:02:41,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:41,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:02:41,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:02:41,777 INFO L87 Difference]: Start difference. First operand 19620 states and 25083 transitions. Second operand 5 states. [2020-10-14 21:02:44,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:44,121 INFO L93 Difference]: Finished difference Result 42082 states and 54052 transitions. [2020-10-14 21:02:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:02:44,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2020-10-14 21:02:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:44,195 INFO L225 Difference]: With dead ends: 42082 [2020-10-14 21:02:44,195 INFO L226 Difference]: Without dead ends: 22846 [2020-10-14 21:02:44,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:02:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22846 states. [2020-10-14 21:02:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22846 to 21880. [2020-10-14 21:02:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21880 states. [2020-10-14 21:02:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21880 states to 21880 states and 27693 transitions. [2020-10-14 21:02:44,599 INFO L78 Accepts]: Start accepts. Automaton has 21880 states and 27693 transitions. Word has length 356 [2020-10-14 21:02:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:44,600 INFO L479 AbstractCegarLoop]: Abstraction has 21880 states and 27693 transitions. [2020-10-14 21:02:44,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:02:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 21880 states and 27693 transitions. [2020-10-14 21:02:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 21:02:44,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:44,617 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:44,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 21:02:44,617 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash 960900267, now seen corresponding path program 1 times [2020-10-14 21:02:44,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:44,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834364817] [2020-10-14 21:02:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:44,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:46,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:46,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 21:02:46,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-14 21:02:46,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:46,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 238 [2020-10-14 21:02:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:02:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:46,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:46,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:46,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:46,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:46,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:46,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:02:46,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:46,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:46,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:46,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:02:46,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:46,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 21:02:46,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:46,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:46,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:02:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:46,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:46,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:02:46,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 21:02:46,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:46,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:46,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:46,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 21:02:46,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:46,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-14 21:02:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:46,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:46,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:02:46,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 21:02:46,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:46,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:02:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 21:02:47,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834364817] [2020-10-14 21:02:47,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:47,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:02:47,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105677437] [2020-10-14 21:02:47,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:02:47,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:47,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:02:47,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:02:47,104 INFO L87 Difference]: Start difference. First operand 21880 states and 27693 transitions. Second operand 7 states. [2020-10-14 21:02:47,936 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-14 21:02:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:49,884 INFO L93 Difference]: Finished difference Result 42577 states and 54147 transitions. [2020-10-14 21:02:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:02:49,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-14 21:02:49,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:49,949 INFO L225 Difference]: With dead ends: 42577 [2020-10-14 21:02:49,949 INFO L226 Difference]: Without dead ends: 23032 [2020-10-14 21:02:49,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:02:50,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23032 states. [2020-10-14 21:02:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23032 to 21310. [2020-10-14 21:02:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21310 states. [2020-10-14 21:02:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21310 states to 21310 states and 26953 transitions. [2020-10-14 21:02:50,389 INFO L78 Accepts]: Start accepts. Automaton has 21310 states and 26953 transitions. Word has length 370 [2020-10-14 21:02:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:50,389 INFO L479 AbstractCegarLoop]: Abstraction has 21310 states and 26953 transitions. [2020-10-14 21:02:50,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:02:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 21310 states and 26953 transitions. [2020-10-14 21:02:50,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-14 21:02:50,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:50,411 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:50,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 21:02:50,411 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:50,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:50,412 INFO L82 PathProgramCache]: Analyzing trace with hash -965783877, now seen corresponding path program 1 times [2020-10-14 21:02:50,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:50,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167178547] [2020-10-14 21:02:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:50,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:51,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:51,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-14 21:02:51,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:51,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-14 21:02:51,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:51,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 21:02:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:02:51,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:51,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:51,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:51,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:02:51,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:51,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:51,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:51,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:51,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:51,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:02:51,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:51,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:02:51,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:51,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:51,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:51,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:51,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:02:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:51,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:51,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 21:02:51,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 21:02:51,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:51,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:02:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 21:02:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:52,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:52,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:02:52,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:52,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 21:02:52,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:52,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:02:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 21:02:52,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167178547] [2020-10-14 21:02:52,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:52,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:02:52,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024293922] [2020-10-14 21:02:52,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:02:52,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:52,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:02:52,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:02:52,309 INFO L87 Difference]: Start difference. First operand 21310 states and 26953 transitions. Second operand 7 states. [2020-10-14 21:02:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:02:55,068 INFO L93 Difference]: Finished difference Result 38009 states and 48455 transitions. [2020-10-14 21:02:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:02:55,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-14 21:02:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:02:55,111 INFO L225 Difference]: With dead ends: 38009 [2020-10-14 21:02:55,112 INFO L226 Difference]: Without dead ends: 21536 [2020-10-14 21:02:55,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:02:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21536 states. [2020-10-14 21:02:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21536 to 21322. [2020-10-14 21:02:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21322 states. [2020-10-14 21:02:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21322 states to 21322 states and 26850 transitions. [2020-10-14 21:02:55,497 INFO L78 Accepts]: Start accepts. Automaton has 21322 states and 26850 transitions. Word has length 371 [2020-10-14 21:02:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:02:55,497 INFO L479 AbstractCegarLoop]: Abstraction has 21322 states and 26850 transitions. [2020-10-14 21:02:55,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:02:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand 21322 states and 26850 transitions. [2020-10-14 21:02:55,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-14 21:02:55,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:02:55,512 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:02:55,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 21:02:55,513 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:02:55,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:02:55,513 INFO L82 PathProgramCache]: Analyzing trace with hash -888287717, now seen corresponding path program 1 times [2020-10-14 21:02:55,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:02:55,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989728059] [2020-10-14 21:02:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:02:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:56,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:56,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-14 21:02:56,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:02:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-14 21:02:56,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:56,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 242 [2020-10-14 21:02:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:02:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:02:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:56,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:56,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:02:56,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:56,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:02:56,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:56,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:56,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:56,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:56,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:56,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:02:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:56,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:56,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:56,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:02:56,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:56,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:02:56,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:56,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:02:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:02:56,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:57,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:02:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:57,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:57,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:02:57,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:57,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 21:02:57,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:57,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:02:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:02:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:02:57,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:57,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-14 21:02:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:02:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:02:57,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:02:57,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:02:57,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:02:57,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:02:57,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:02:57,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:02:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:02:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:02:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:02:57,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:02:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 21:02:57,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989728059] [2020-10-14 21:02:57,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:02:57,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:02:57,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324853552] [2020-10-14 21:02:57,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:02:57,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:02:57,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:02:57,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:02:57,329 INFO L87 Difference]: Start difference. First operand 21322 states and 26850 transitions. Second operand 7 states. [2020-10-14 21:03:00,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:00,075 INFO L93 Difference]: Finished difference Result 34246 states and 43630 transitions. [2020-10-14 21:03:00,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:03:00,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-14 21:03:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:00,125 INFO L225 Difference]: With dead ends: 34246 [2020-10-14 21:03:00,125 INFO L226 Difference]: Without dead ends: 21729 [2020-10-14 21:03:00,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:03:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21729 states. [2020-10-14 21:03:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21729 to 21704. [2020-10-14 21:03:00,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21704 states. [2020-10-14 21:03:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21704 states to 21704 states and 27250 transitions. [2020-10-14 21:03:00,696 INFO L78 Accepts]: Start accepts. Automaton has 21704 states and 27250 transitions. Word has length 374 [2020-10-14 21:03:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:00,696 INFO L479 AbstractCegarLoop]: Abstraction has 21704 states and 27250 transitions. [2020-10-14 21:03:00,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 21704 states and 27250 transitions. [2020-10-14 21:03:00,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-14 21:03:00,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:00,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:00,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 21:03:00,712 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:00,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:00,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1926062177, now seen corresponding path program 1 times [2020-10-14 21:03:00,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:00,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253993521] [2020-10-14 21:03:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:00,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:02,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:02,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-14 21:03:02,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-14 21:03:02,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:02,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:03:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:03:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:02,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:02,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:02,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:02,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:02,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:03:02,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:02,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:02,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:02,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:02,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:03:02,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:02,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 21:03:02,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:02,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:02,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:02,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:02,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:03:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:03:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:02,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:02,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:02,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:03:02,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:02,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:03:02,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:02,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:03:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 21:03:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:02,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:02,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:03:02,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:02,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 21:03:02,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:02,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 21:03:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:02,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 238 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 21:03:02,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253993521] [2020-10-14 21:03:02,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:02,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:02,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863211468] [2020-10-14 21:03:02,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:02,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:02,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:02,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:02,575 INFO L87 Difference]: Start difference. First operand 21704 states and 27250 transitions. Second operand 7 states. [2020-10-14 21:03:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:05,825 INFO L93 Difference]: Finished difference Result 42186 states and 53166 transitions. [2020-10-14 21:03:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:03:05,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-14 21:03:05,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:05,863 INFO L225 Difference]: With dead ends: 42186 [2020-10-14 21:03:05,863 INFO L226 Difference]: Without dead ends: 21836 [2020-10-14 21:03:05,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:03:05,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21836 states. [2020-10-14 21:03:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21836 to 21632. [2020-10-14 21:03:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21632 states. [2020-10-14 21:03:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21632 states to 21632 states and 26678 transitions. [2020-10-14 21:03:06,207 INFO L78 Accepts]: Start accepts. Automaton has 21632 states and 26678 transitions. Word has length 383 [2020-10-14 21:03:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:06,207 INFO L479 AbstractCegarLoop]: Abstraction has 21632 states and 26678 transitions. [2020-10-14 21:03:06,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 21632 states and 26678 transitions. [2020-10-14 21:03:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-14 21:03:06,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:06,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:06,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 21:03:06,218 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:06,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:06,219 INFO L82 PathProgramCache]: Analyzing trace with hash 835710192, now seen corresponding path program 1 times [2020-10-14 21:03:06,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:06,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488308012] [2020-10-14 21:03:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:06,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:08,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:08,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-14 21:03:08,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:03:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2575 [2020-10-14 21:03:08,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:08,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 21:03:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 21:03:08,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:08,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:08,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:08,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:08,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:08,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:03:08,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:08,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:08,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:09,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:09,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:03:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 21:03:09,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:09,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:03:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:09,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:03:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:09,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:09,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:09,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:03:09,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:09,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 21:03:09,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:09,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:03:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:09,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-14 21:03:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:09,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:09,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:09,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:03:09,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:09,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 21:03:09,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:09,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 21:03:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 246 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 21:03:10,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488308012] [2020-10-14 21:03:10,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:10,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:10,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497682210] [2020-10-14 21:03:10,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:10,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:10,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:10,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:10,007 INFO L87 Difference]: Start difference. First operand 21632 states and 26678 transitions. Second operand 7 states. [2020-10-14 21:03:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:12,859 INFO L93 Difference]: Finished difference Result 40202 states and 49758 transitions. [2020-10-14 21:03:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:03:12,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2020-10-14 21:03:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:12,906 INFO L225 Difference]: With dead ends: 40202 [2020-10-14 21:03:12,907 INFO L226 Difference]: Without dead ends: 22619 [2020-10-14 21:03:12,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:03:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22619 states. [2020-10-14 21:03:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22619 to 22406. [2020-10-14 21:03:13,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22406 states. [2020-10-14 21:03:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22406 states to 22406 states and 27425 transitions. [2020-10-14 21:03:13,238 INFO L78 Accepts]: Start accepts. Automaton has 22406 states and 27425 transitions. Word has length 403 [2020-10-14 21:03:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:13,239 INFO L479 AbstractCegarLoop]: Abstraction has 22406 states and 27425 transitions. [2020-10-14 21:03:13,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 22406 states and 27425 transitions. [2020-10-14 21:03:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-14 21:03:13,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:13,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:13,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 21:03:13,259 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:13,260 INFO L82 PathProgramCache]: Analyzing trace with hash 112267044, now seen corresponding path program 1 times [2020-10-14 21:03:13,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:13,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571643030] [2020-10-14 21:03:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:13,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:13,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:14,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:16,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:16,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-14 21:03:16,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:03:16,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2662 [2020-10-14 21:03:16,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:16,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 21:03:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 21:03:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:16,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:16,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:16,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:16,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:16,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:03:16,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:16,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:16,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:16,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:16,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:03:16,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 21:03:16,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:16,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:03:16,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:16,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:03:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:16,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:03:16,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:03:16,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:16,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:03:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:16,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 21:03:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:16,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:16,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:16,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:03:16,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 21:03:16,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:16,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 21:03:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 256 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 21:03:16,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571643030] [2020-10-14 21:03:16,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:16,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:16,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483964883] [2020-10-14 21:03:16,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:16,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:16,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:16,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:16,873 INFO L87 Difference]: Start difference. First operand 22406 states and 27425 transitions. Second operand 7 states. [2020-10-14 21:03:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:19,778 INFO L93 Difference]: Finished difference Result 43331 states and 53177 transitions. [2020-10-14 21:03:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:03:19,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-10-14 21:03:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:19,827 INFO L225 Difference]: With dead ends: 43331 [2020-10-14 21:03:19,827 INFO L226 Difference]: Without dead ends: 22666 [2020-10-14 21:03:19,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:03:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22666 states. [2020-10-14 21:03:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22666 to 22638. [2020-10-14 21:03:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22638 states. [2020-10-14 21:03:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22638 states to 22638 states and 27243 transitions. [2020-10-14 21:03:20,175 INFO L78 Accepts]: Start accepts. Automaton has 22638 states and 27243 transitions. Word has length 413 [2020-10-14 21:03:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:20,176 INFO L479 AbstractCegarLoop]: Abstraction has 22638 states and 27243 transitions. [2020-10-14 21:03:20,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 22638 states and 27243 transitions. [2020-10-14 21:03:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-14 21:03:20,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:20,189 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:20,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 21:03:20,190 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:20,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:20,190 INFO L82 PathProgramCache]: Analyzing trace with hash -838499178, now seen corresponding path program 1 times [2020-10-14 21:03:20,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:20,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101713083] [2020-10-14 21:03:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:20,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:22,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:22,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-14 21:03:22,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2358 [2020-10-14 21:03:22,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:22,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 21:03:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 21:03:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:22,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:22,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:22,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:03:22,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:22,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:22,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:22,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:03:22,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:22,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 21:03:22,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:22,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:03:22,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:22,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:03:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:23,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:23,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 21:03:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:23,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 21:03:23,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:23,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 21:03:23,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:23,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-14 21:03:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:23,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:23,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:03:23,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-14 21:03:23,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:23,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 21:03:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:03:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 246 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 21:03:24,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101713083] [2020-10-14 21:03:24,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:24,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:24,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578533379] [2020-10-14 21:03:24,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:24,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:24,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:24,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:24,285 INFO L87 Difference]: Start difference. First operand 22638 states and 27243 transitions. Second operand 7 states. [2020-10-14 21:03:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:27,187 INFO L93 Difference]: Finished difference Result 39710 states and 48051 transitions. [2020-10-14 21:03:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:03:27,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 425 [2020-10-14 21:03:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:27,222 INFO L225 Difference]: With dead ends: 39710 [2020-10-14 21:03:27,222 INFO L226 Difference]: Without dead ends: 21895 [2020-10-14 21:03:27,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:03:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21895 states. [2020-10-14 21:03:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21895 to 21876. [2020-10-14 21:03:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21876 states. [2020-10-14 21:03:27,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21876 states to 21876 states and 26301 transitions. [2020-10-14 21:03:27,547 INFO L78 Accepts]: Start accepts. Automaton has 21876 states and 26301 transitions. Word has length 425 [2020-10-14 21:03:27,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:27,548 INFO L479 AbstractCegarLoop]: Abstraction has 21876 states and 26301 transitions. [2020-10-14 21:03:27,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 21876 states and 26301 transitions. [2020-10-14 21:03:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-14 21:03:27,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:27,560 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 21:03:27,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 21:03:27,561 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1818038228, now seen corresponding path program 1 times [2020-10-14 21:03:27,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:27,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401934067] [2020-10-14 21:03:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:27,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:31,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:31,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-14 21:03:31,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3855 [2020-10-14 21:03:31,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:31,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:31,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:03:31,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:03:31,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 21:03:31,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:31,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:31,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:31,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:31,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:03:31,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:31,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:03:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:31,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:31,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:31,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:31,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:03:31,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:31,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 21:03:31,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:31,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:03:31,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:03:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:32,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:32,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:03:32,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:32,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 21:03:32,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:32,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:03:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:03:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:03:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:32,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:32,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:32,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:03:32,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 21:03:32,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:32,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:03:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 21:03:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:32,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:32,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:03:32,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 21:03:32,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:32,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 21:03:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:32,941 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 182 proven. 400 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 21:03:32,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401934067] [2020-10-14 21:03:32,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:32,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:03:32,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881747722] [2020-10-14 21:03:32,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:03:32,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:32,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:03:32,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:03:32,949 INFO L87 Difference]: Start difference. First operand 21876 states and 26301 transitions. Second operand 10 states. [2020-10-14 21:03:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:37,092 INFO L93 Difference]: Finished difference Result 38425 states and 49223 transitions. [2020-10-14 21:03:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 21:03:37,094 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 431 [2020-10-14 21:03:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:37,148 INFO L225 Difference]: With dead ends: 38425 [2020-10-14 21:03:37,149 INFO L226 Difference]: Without dead ends: 24778 [2020-10-14 21:03:37,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-14 21:03:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24778 states. [2020-10-14 21:03:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24778 to 24399. [2020-10-14 21:03:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24399 states. [2020-10-14 21:03:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24399 states to 24399 states and 29389 transitions. [2020-10-14 21:03:37,480 INFO L78 Accepts]: Start accepts. Automaton has 24399 states and 29389 transitions. Word has length 431 [2020-10-14 21:03:37,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:37,481 INFO L479 AbstractCegarLoop]: Abstraction has 24399 states and 29389 transitions. [2020-10-14 21:03:37,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:03:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 24399 states and 29389 transitions. [2020-10-14 21:03:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-14 21:03:37,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:37,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:37,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 21:03:37,494 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:37,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:37,494 INFO L82 PathProgramCache]: Analyzing trace with hash -358163499, now seen corresponding path program 1 times [2020-10-14 21:03:37,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:37,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845594550] [2020-10-14 21:03:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:38,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:39,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:39,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-14 21:03:39,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:03:39,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2244 [2020-10-14 21:03:39,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:39,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 21:03:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 21:03:39,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:39,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:39,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:39,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:03:39,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:39,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:39,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:39,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:39,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:39,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:03:39,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 21:03:39,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:39,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:39,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:39,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:39,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 21:03:39,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 21:03:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:40,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:40,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:40,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:03:40,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:40,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 21:03:40,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:40,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:03:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 21:03:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:40,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:40,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:03:40,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 21:03:40,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:40,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:40,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:40,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 21:03:40,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 273 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 21:03:40,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845594550] [2020-10-14 21:03:40,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:40,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:40,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553593205] [2020-10-14 21:03:40,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:40,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:40,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:40,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:40,361 INFO L87 Difference]: Start difference. First operand 24399 states and 29389 transitions. Second operand 7 states. [2020-10-14 21:03:44,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:44,056 INFO L93 Difference]: Finished difference Result 48214 states and 58147 transitions. [2020-10-14 21:03:44,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:03:44,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 434 [2020-10-14 21:03:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:44,099 INFO L225 Difference]: With dead ends: 48214 [2020-10-14 21:03:44,099 INFO L226 Difference]: Without dead ends: 25556 [2020-10-14 21:03:44,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:03:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25556 states. [2020-10-14 21:03:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25556 to 25533. [2020-10-14 21:03:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25533 states. [2020-10-14 21:03:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25533 states to 25533 states and 30485 transitions. [2020-10-14 21:03:44,399 INFO L78 Accepts]: Start accepts. Automaton has 25533 states and 30485 transitions. Word has length 434 [2020-10-14 21:03:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:44,399 INFO L479 AbstractCegarLoop]: Abstraction has 25533 states and 30485 transitions. [2020-10-14 21:03:44,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 25533 states and 30485 transitions. [2020-10-14 21:03:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-14 21:03:44,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:44,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:44,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 21:03:44,413 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:44,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:44,413 INFO L82 PathProgramCache]: Analyzing trace with hash -57391158, now seen corresponding path program 1 times [2020-10-14 21:03:44,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:44,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162831432] [2020-10-14 21:03:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:44,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:44,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:48,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:48,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-14 21:03:48,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:03:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3980 [2020-10-14 21:03:48,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:48,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 21:03:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 21:03:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:48,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:48,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:48,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:48,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:03:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:48,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:48,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:48,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:48,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:48,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:03:48,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 21:03:48,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:48,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:03:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:48,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:03:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:48,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:48,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 21:03:48,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 21:03:48,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:48,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 21:03:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-14 21:03:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:49,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:49,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:03:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 21:03:49,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:49,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 21:03:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 256 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 21:03:49,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162831432] [2020-10-14 21:03:49,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:49,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:03:49,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51999325] [2020-10-14 21:03:49,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:03:49,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:49,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:03:49,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:03:49,436 INFO L87 Difference]: Start difference. First operand 25533 states and 30485 transitions. Second operand 7 states. [2020-10-14 21:03:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:03:52,351 INFO L93 Difference]: Finished difference Result 50460 states and 60372 transitions. [2020-10-14 21:03:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:03:52,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2020-10-14 21:03:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:03:52,401 INFO L225 Difference]: With dead ends: 50460 [2020-10-14 21:03:52,401 INFO L226 Difference]: Without dead ends: 28010 [2020-10-14 21:03:52,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:03:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28010 states. [2020-10-14 21:03:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28010 to 27793. [2020-10-14 21:03:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27793 states. [2020-10-14 21:03:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27793 states to 27793 states and 32868 transitions. [2020-10-14 21:03:52,705 INFO L78 Accepts]: Start accepts. Automaton has 27793 states and 32868 transitions. Word has length 435 [2020-10-14 21:03:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:03:52,705 INFO L479 AbstractCegarLoop]: Abstraction has 27793 states and 32868 transitions. [2020-10-14 21:03:52,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:03:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 27793 states and 32868 transitions. [2020-10-14 21:03:52,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-14 21:03:52,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:03:52,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:03:52,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 21:03:52,714 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:03:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:03:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1925228671, now seen corresponding path program 1 times [2020-10-14 21:03:52,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:03:52,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685629262] [2020-10-14 21:03:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:03:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:53,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:55,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:55,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-14 21:03:55,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:03:55,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2419 [2020-10-14 21:03:55,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:55,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:03:55,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 21:03:55,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 21:03:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:55,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:03:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:55,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:55,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:03:55,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:55,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:03:55,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:55,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:55,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:03:55,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:55,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:03:55,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:55,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:03:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:55,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:55,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:55,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:03:55,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:55,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 21:03:55,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:55,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:55,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:03:55,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:03:55,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 21:03:55,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:55,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 21:03:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:55,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:55,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 21:03:55,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:03:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:03:55,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:55,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:03:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 21:03:55,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:55,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-14 21:03:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:03:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:03:55,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:03:55,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:03:55,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:03:55,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 21:03:55,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:03:55,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:03:55,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:03:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:03:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:03:55,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:03:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 368 proven. 93 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:03:56,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685629262] [2020-10-14 21:03:56,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:03:56,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:03:56,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202054462] [2020-10-14 21:03:56,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:03:56,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:03:56,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:03:56,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:03:56,118 INFO L87 Difference]: Start difference. First operand 27793 states and 32868 transitions. Second operand 10 states. [2020-10-14 21:04:01,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:01,260 INFO L93 Difference]: Finished difference Result 52353 states and 62501 transitions. [2020-10-14 21:04:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 21:04:01,262 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 457 [2020-10-14 21:04:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:01,315 INFO L225 Difference]: With dead ends: 52353 [2020-10-14 21:04:01,316 INFO L226 Difference]: Without dead ends: 31629 [2020-10-14 21:04:01,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2020-10-14 21:04:01,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31629 states. [2020-10-14 21:04:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31629 to 31223. [2020-10-14 21:04:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31223 states. [2020-10-14 21:04:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31223 states to 31223 states and 37049 transitions. [2020-10-14 21:04:01,654 INFO L78 Accepts]: Start accepts. Automaton has 31223 states and 37049 transitions. Word has length 457 [2020-10-14 21:04:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:01,655 INFO L479 AbstractCegarLoop]: Abstraction has 31223 states and 37049 transitions. [2020-10-14 21:04:01,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:04:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 31223 states and 37049 transitions. [2020-10-14 21:04:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-14 21:04:01,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:01,664 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:01,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 21:04:01,664 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:01,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1366231202, now seen corresponding path program 1 times [2020-10-14 21:04:01,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:01,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311072779] [2020-10-14 21:04:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:03,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:03,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-14 21:04:03,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:04:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1827 [2020-10-14 21:04:03,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:03,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 21:04:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:04:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:03,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:03,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:03,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:03,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:04:03,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:03,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:03,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:03,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:03,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:03,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:04:03,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 21:04:03,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:03,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:04:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:03,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:03,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:03,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:04:03,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:03,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 21:04:03,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:03,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:04:03,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:04:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:03,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:03,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:04:03,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:04:03,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:03,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:04:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:03,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-14 21:04:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:03,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:03,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:03,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:04:03,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:03,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 21:04:03,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:03,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 21:04:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 373 proven. 93 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-14 21:04:04,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311072779] [2020-10-14 21:04:04,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:04,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:04:04,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211032973] [2020-10-14 21:04:04,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:04:04,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:04,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:04:04,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:04:04,045 INFO L87 Difference]: Start difference. First operand 31223 states and 37049 transitions. Second operand 7 states. [2020-10-14 21:04:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:07,515 INFO L93 Difference]: Finished difference Result 52951 states and 63491 transitions. [2020-10-14 21:04:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:04:07,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-14 21:04:07,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:07,570 INFO L225 Difference]: With dead ends: 52951 [2020-10-14 21:04:07,570 INFO L226 Difference]: Without dead ends: 32601 [2020-10-14 21:04:07,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:04:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32601 states. [2020-10-14 21:04:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32601 to 32568. [2020-10-14 21:04:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32568 states. [2020-10-14 21:04:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32568 states to 32568 states and 38601 transitions. [2020-10-14 21:04:07,914 INFO L78 Accepts]: Start accepts. Automaton has 32568 states and 38601 transitions. Word has length 464 [2020-10-14 21:04:07,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:07,914 INFO L479 AbstractCegarLoop]: Abstraction has 32568 states and 38601 transitions. [2020-10-14 21:04:07,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:04:07,914 INFO L276 IsEmpty]: Start isEmpty. Operand 32568 states and 38601 transitions. [2020-10-14 21:04:07,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-14 21:04:07,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:07,926 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:07,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 21:04:07,926 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:07,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:07,927 INFO L82 PathProgramCache]: Analyzing trace with hash -130525468, now seen corresponding path program 1 times [2020-10-14 21:04:07,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:07,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221696631] [2020-10-14 21:04:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:08,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:08,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-14 21:04:08,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:04:08,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-14 21:04:08,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:08,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-14 21:04:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 21:04:08,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:09,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:09,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:09,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:04:09,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:09,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:09,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:09,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:09,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:09,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 21:04:09,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 21:04:09,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:09,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 21:04:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:09,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:09,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:09,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:04:09,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:09,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 21:04:09,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:09,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:09,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:09,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:09,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 21:04:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:09,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-10-14 21:04:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:09,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:09,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:04:09,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 21:04:09,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:09,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:04:09,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-14 21:04:09,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221696631] [2020-10-14 21:04:09,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:09,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:04:09,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187029958] [2020-10-14 21:04:09,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:04:09,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:09,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:04:09,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:04:09,720 INFO L87 Difference]: Start difference. First operand 32568 states and 38601 transitions. Second operand 7 states. [2020-10-14 21:04:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:12,900 INFO L93 Difference]: Finished difference Result 60334 states and 71839 transitions. [2020-10-14 21:04:12,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:04:12,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 472 [2020-10-14 21:04:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:12,956 INFO L225 Difference]: With dead ends: 60334 [2020-10-14 21:04:12,956 INFO L226 Difference]: Without dead ends: 32198 [2020-10-14 21:04:12,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:04:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32198 states. [2020-10-14 21:04:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32198 to 31421. [2020-10-14 21:04:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31421 states. [2020-10-14 21:04:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31421 states to 31421 states and 36710 transitions. [2020-10-14 21:04:13,307 INFO L78 Accepts]: Start accepts. Automaton has 31421 states and 36710 transitions. Word has length 472 [2020-10-14 21:04:13,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:13,307 INFO L479 AbstractCegarLoop]: Abstraction has 31421 states and 36710 transitions. [2020-10-14 21:04:13,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:04:13,307 INFO L276 IsEmpty]: Start isEmpty. Operand 31421 states and 36710 transitions. [2020-10-14 21:04:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-14 21:04:13,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:13,316 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:13,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 21:04:13,316 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:13,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1155261076, now seen corresponding path program 1 times [2020-10-14 21:04:13,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:13,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493667322] [2020-10-14 21:04:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:13,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:13,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-14 21:04:13,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-14 21:04:13,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:13,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 447 [2020-10-14 21:04:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 21:04:13,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:13,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:13,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:13,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:13,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:13,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:04:13,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:13,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:13,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:13,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:13,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:13,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:13,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:04:13,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:13,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 21:04:13,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:13,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:13,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:13,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:04:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:14,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:14,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:04:14,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:14,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 21:04:14,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:14,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 21:04:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:14,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:14,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 21:04:14,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:14,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:04:14,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:14,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 21:04:14,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 132 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-14 21:04:14,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493667322] [2020-10-14 21:04:14,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:14,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:04:14,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582524130] [2020-10-14 21:04:14,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:04:14,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:14,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:04:14,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:04:14,480 INFO L87 Difference]: Start difference. First operand 31421 states and 36710 transitions. Second operand 5 states. [2020-10-14 21:04:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:17,041 INFO L93 Difference]: Finished difference Result 55193 states and 64959 transitions. [2020-10-14 21:04:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:04:17,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2020-10-14 21:04:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:17,113 INFO L225 Difference]: With dead ends: 55193 [2020-10-14 21:04:17,113 INFO L226 Difference]: Without dead ends: 34835 [2020-10-14 21:04:17,138 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 [2020-10-14 21:04:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34835 states. [2020-10-14 21:04:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34835 to 32177. [2020-10-14 21:04:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32177 states. [2020-10-14 21:04:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32177 states to 32177 states and 37219 transitions. [2020-10-14 21:04:17,481 INFO L78 Accepts]: Start accepts. Automaton has 32177 states and 37219 transitions. Word has length 483 [2020-10-14 21:04:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:17,481 INFO L479 AbstractCegarLoop]: Abstraction has 32177 states and 37219 transitions. [2020-10-14 21:04:17,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:04:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 32177 states and 37219 transitions. [2020-10-14 21:04:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-14 21:04:17,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:17,492 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 21:04:17,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 21:04:17,492 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:17,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1766298368, now seen corresponding path program 1 times [2020-10-14 21:04:17,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:17,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060992584] [2020-10-14 21:04:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:17,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:17,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:19,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:19,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-10-14 21:04:19,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:04:19,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1780 [2020-10-14 21:04:19,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:19,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:04:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 21:04:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 21:04:19,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:19,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:19,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:19,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:19,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:19,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:04:19,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:19,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:19,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:19,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:19,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:04:19,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:04:19,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:19,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:04:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:19,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:19,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:04:19,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:19,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 21:04:19,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:19,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 21:04:19,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:19,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 21:04:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:20,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:20,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:20,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:04:20,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:04:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-14 21:04:20,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:20,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:04:20,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:20,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-14 21:04:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:20,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:20,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:20,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:04:20,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:20,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 21:04:20,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:20,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:20,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:04:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:04:20,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 578 proven. 106 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 21:04:20,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060992584] [2020-10-14 21:04:20,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:20,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:04:20,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138910982] [2020-10-14 21:04:20,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:04:20,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:20,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:04:20,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:04:20,895 INFO L87 Difference]: Start difference. First operand 32177 states and 37219 transitions. Second operand 9 states. [2020-10-14 21:04:28,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:28,151 INFO L93 Difference]: Finished difference Result 57780 states and 67425 transitions. [2020-10-14 21:04:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:04:28,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 511 [2020-10-14 21:04:28,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:28,213 INFO L225 Difference]: With dead ends: 57780 [2020-10-14 21:04:28,214 INFO L226 Difference]: Without dead ends: 33972 [2020-10-14 21:04:28,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:04:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33972 states. [2020-10-14 21:04:28,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33972 to 31020. [2020-10-14 21:04:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31020 states. [2020-10-14 21:04:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31020 states to 31020 states and 35785 transitions. [2020-10-14 21:04:28,571 INFO L78 Accepts]: Start accepts. Automaton has 31020 states and 35785 transitions. Word has length 511 [2020-10-14 21:04:28,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:28,571 INFO L479 AbstractCegarLoop]: Abstraction has 31020 states and 35785 transitions. [2020-10-14 21:04:28,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:04:28,571 INFO L276 IsEmpty]: Start isEmpty. Operand 31020 states and 35785 transitions. [2020-10-14 21:04:28,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-14 21:04:28,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:28,586 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:04:28,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 21:04:28,586 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:28,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:28,586 INFO L82 PathProgramCache]: Analyzing trace with hash 947228446, now seen corresponding path program 1 times [2020-10-14 21:04:28,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:28,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913385494] [2020-10-14 21:04:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:30,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:30,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 575 [2020-10-14 21:04:30,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:04:30,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2029 [2020-10-14 21:04:30,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:30,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:04:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-14 21:04:30,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 21:04:30,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:30,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:30,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:30,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:30,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:30,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:04:30,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:30,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:30,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:30,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:30,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:30,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 21:04:30,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:30,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:04:30,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:30,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:30,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:30,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:30,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 21:04:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:31,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:31,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:04:31,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:04:31,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:31,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 21:04:31,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:31,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-10-14 21:04:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:31,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:31,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 21:04:31,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:04:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 21:04:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:31,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:04:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-10-14 21:04:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:31,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:31,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:04:31,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:31,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 21:04:31,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:31,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:04:31,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 529 proven. 6 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-14 21:04:31,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913385494] [2020-10-14 21:04:31,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:31,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:04:31,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241861461] [2020-10-14 21:04:31,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:04:31,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:31,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:04:31,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:04:31,462 INFO L87 Difference]: Start difference. First operand 31020 states and 35785 transitions. Second operand 8 states. [2020-10-14 21:04:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:36,012 INFO L93 Difference]: Finished difference Result 57655 states and 66822 transitions. [2020-10-14 21:04:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:04:36,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 559 [2020-10-14 21:04:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:36,063 INFO L225 Difference]: With dead ends: 57655 [2020-10-14 21:04:36,064 INFO L226 Difference]: Without dead ends: 31044 [2020-10-14 21:04:36,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:04:36,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31044 states. [2020-10-14 21:04:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31044 to 31016. [2020-10-14 21:04:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31016 states. [2020-10-14 21:04:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31016 states to 31016 states and 35641 transitions. [2020-10-14 21:04:36,399 INFO L78 Accepts]: Start accepts. Automaton has 31016 states and 35641 transitions. Word has length 559 [2020-10-14 21:04:36,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:36,399 INFO L479 AbstractCegarLoop]: Abstraction has 31016 states and 35641 transitions. [2020-10-14 21:04:36,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:04:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 31016 states and 35641 transitions. [2020-10-14 21:04:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-14 21:04:36,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:36,412 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:36,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 21:04:36,413 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:36,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:36,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1499395983, now seen corresponding path program 1 times [2020-10-14 21:04:36,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:36,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652582883] [2020-10-14 21:04:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:37,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:41,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:41,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 580 [2020-10-14 21:04:41,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:04:41,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 21:04:41,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:41,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:04:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-14 21:04:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:04:41,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:41,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:41,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:04:41,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:41,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:41,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:41,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:41,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:04:41,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 21:04:41,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:41,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:04:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:41,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:41,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 21:04:41,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 21:04:41,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:41,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:04:41,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:41,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-14 21:04:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:41,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:41,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:04:41,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:04:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 21:04:41,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:41,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:04:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:41,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-14 21:04:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:42,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:42,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:04:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 21:04:42,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:42,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:04:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-10-14 21:04:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:42,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:42,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:04:42,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 21:04:42,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:42,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 21:04:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1119 backedges. 590 proven. 175 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 21:04:42,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652582883] [2020-10-14 21:04:42,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:42,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:04:42,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234519816] [2020-10-14 21:04:42,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:04:42,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:42,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:04:42,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:04:42,267 INFO L87 Difference]: Start difference. First operand 31016 states and 35641 transitions. Second operand 7 states. [2020-10-14 21:04:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:45,143 INFO L93 Difference]: Finished difference Result 52139 states and 60193 transitions. [2020-10-14 21:04:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:04:45,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2020-10-14 21:04:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:45,200 INFO L225 Difference]: With dead ends: 52139 [2020-10-14 21:04:45,200 INFO L226 Difference]: Without dead ends: 28352 [2020-10-14 21:04:45,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:04:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28352 states. [2020-10-14 21:04:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28352 to 27754. [2020-10-14 21:04:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27754 states. [2020-10-14 21:04:45,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27754 states to 27754 states and 31115 transitions. [2020-10-14 21:04:45,506 INFO L78 Accepts]: Start accepts. Automaton has 27754 states and 31115 transitions. Word has length 562 [2020-10-14 21:04:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:45,506 INFO L479 AbstractCegarLoop]: Abstraction has 27754 states and 31115 transitions. [2020-10-14 21:04:45,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:04:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand 27754 states and 31115 transitions. [2020-10-14 21:04:45,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-14 21:04:45,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:45,517 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:04:45,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 21:04:45,517 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:45,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:45,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1512845500, now seen corresponding path program 1 times [2020-10-14 21:04:45,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:45,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256772818] [2020-10-14 21:04:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:45,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:45,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:48,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:48,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-14 21:04:48,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:04:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2932 [2020-10-14 21:04:48,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:48,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:04:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 21:04:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-14 21:04:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:48,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:48,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:48,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:04:48,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:48,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:48,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:48,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:48,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:04:48,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:04:48,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:48,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 21:04:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:48,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:48,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:48,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:04:48,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:04:48,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:48,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 21:04:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 21:04:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:04:48,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:04:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-14 21:04:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:49,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:04:49,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 21:04:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:49,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:04:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 581 proven. 93 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 21:04:49,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256772818] [2020-10-14 21:04:49,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:49,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:04:49,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903113663] [2020-10-14 21:04:49,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:04:49,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:49,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:04:49,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:04:49,603 INFO L87 Difference]: Start difference. First operand 27754 states and 31115 transitions. Second operand 10 states. [2020-10-14 21:04:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:55,648 INFO L93 Difference]: Finished difference Result 48509 states and 54652 transitions. [2020-10-14 21:04:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 21:04:55,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 583 [2020-10-14 21:04:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:55,705 INFO L225 Difference]: With dead ends: 48509 [2020-10-14 21:04:55,705 INFO L226 Difference]: Without dead ends: 29504 [2020-10-14 21:04:55,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2020-10-14 21:04:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29504 states. [2020-10-14 21:04:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29504 to 28341. [2020-10-14 21:04:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28341 states. [2020-10-14 21:04:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28341 states to 28341 states and 31703 transitions. [2020-10-14 21:04:56,088 INFO L78 Accepts]: Start accepts. Automaton has 28341 states and 31703 transitions. Word has length 583 [2020-10-14 21:04:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:56,089 INFO L479 AbstractCegarLoop]: Abstraction has 28341 states and 31703 transitions. [2020-10-14 21:04:56,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:04:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 28341 states and 31703 transitions. [2020-10-14 21:04:56,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2020-10-14 21:04:56,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:56,102 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:56,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 21:04:56,102 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1687175170, now seen corresponding path program 1 times [2020-10-14 21:04:56,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:56,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423745781] [2020-10-14 21:04:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:57,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking...