/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:39:48,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:39:48,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:39:48,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:39:48,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:39:48,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:39:48,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:39:48,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:39:48,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:39:48,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:39:48,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:39:48,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:39:48,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:39:48,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:39:48,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:39:48,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:39:48,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:39:48,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:39:48,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:39:48,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:39:48,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:39:48,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:39:48,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:39:48,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:39:48,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:39:48,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:39:48,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:39:48,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:39:48,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:39:48,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:39:48,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:39:48,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:39:48,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:39:48,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:39:48,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:39:48,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:39:48,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:39:48,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:39:48,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:39:48,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:39:48,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:39:48,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:39:48,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:39:48,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:39:48,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:39:48,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:39:48,472 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:39:48,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:39:48,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:39:48,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:39:48,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:39:48,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:39:48,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:39:48,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:39:48,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:39:48,474 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:39:48,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:39:48,474 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:39:48,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:39:48,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:39:48,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:39:48,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:39:48,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:39:48,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:39:48,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:39:48,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:39:48,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:39:48,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:39:48,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:39:48,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:39:48,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:39:48,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:39:48,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:39:48,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:39:48,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:39:48,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:39:48,784 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:39:48,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41.c [2020-10-13 08:39:48,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd651ce05/03123d95c05a45b491da866c8554275e/FLAGb315d03ae [2020-10-13 08:39:49,618 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:39:49,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label41.c [2020-10-13 08:39:49,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd651ce05/03123d95c05a45b491da866c8554275e/FLAGb315d03ae [2020-10-13 08:39:49,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd651ce05/03123d95c05a45b491da866c8554275e [2020-10-13 08:39:49,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:39:49,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:39:49,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:39:49,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:39:49,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:39:49,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:39:49" (1/1) ... [2020-10-13 08:39:49,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558bd778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:49, skipping insertion in model container [2020-10-13 08:39:49,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:39:49" (1/1) ... [2020-10-13 08:39:49,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:39:49,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:39:51,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:39:51,752 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:39:52,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:39:52,521 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:39:52,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52 WrapperNode [2020-10-13 08:39:52,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:39:52,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:39:52,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:39:52,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:39:52,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52" (1/1) ... [2020-10-13 08:39:52,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52" (1/1) ... [2020-10-13 08:39:52,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52" (1/1) ... [2020-10-13 08:39:52,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52" (1/1) ... [2020-10-13 08:39:52,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52" (1/1) ... [2020-10-13 08:39:52,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52" (1/1) ... [2020-10-13 08:39:52,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52" (1/1) ... [2020-10-13 08:39:52,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:39:52,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:39:52,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:39:52,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:39:52,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:39:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:39:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:39:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:39:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:39:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:39:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:39:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:39:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:39:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:39:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:39:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:39:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:39:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:39:52,977 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:39:52,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:39:52,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:39:52,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:40:04,855 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:40:04,855 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:40:04,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:40:04 BoogieIcfgContainer [2020-10-13 08:40:04,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:40:04,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:40:04,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:40:04,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:40:04,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:39:49" (1/3) ... [2020-10-13 08:40:04,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6781db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:40:04, skipping insertion in model container [2020-10-13 08:40:04,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:52" (2/3) ... [2020-10-13 08:40:04,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6781db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:40:04, skipping insertion in model container [2020-10-13 08:40:04,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:40:04" (3/3) ... [2020-10-13 08:40:04,881 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label41.c [2020-10-13 08:40:04,893 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:40:04,904 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:40:04,922 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:40:04,955 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:40:04,955 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:40:04,955 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:40:04,955 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:40:04,956 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:40:04,956 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:40:04,956 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:40:04,956 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:40:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:40:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 08:40:05,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:05,010 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] [2020-10-13 08:40:05,011 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:05,019 INFO L82 PathProgramCache]: Analyzing trace with hash 633410455, now seen corresponding path program 1 times [2020-10-13 08:40:05,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:05,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742922298] [2020-10-13 08:40:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:05,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:05,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:05,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 08:40:05,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:05,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-13 08:40:05,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:40:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:40:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 08:40:05,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:40:06,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:06,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:06,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:06,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:40:06,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:40:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:40:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:06,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742922298] [2020-10-13 08:40:06,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:40:06,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:40:06,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804257970] [2020-10-13 08:40:06,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:06,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:06,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:06,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:06,134 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-13 08:40:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:24,308 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-13 08:40:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:40:24,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 08:40:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:24,366 INFO L225 Difference]: With dead ends: 4080 [2020-10-13 08:40:24,366 INFO L226 Difference]: Without dead ends: 2872 [2020-10-13 08:40:24,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:40:24,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-13 08:40:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-13 08:40:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-13 08:40:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-13 08:40:24,593 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 50 [2020-10-13 08:40:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:24,594 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-13 08:40:24,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:40:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-13 08:40:24,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 08:40:24,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:24,601 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] [2020-10-13 08:40:24,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:40:24,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:24,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:24,603 INFO L82 PathProgramCache]: Analyzing trace with hash 443103603, now seen corresponding path program 1 times [2020-10-13 08:40:24,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:24,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830366282] [2020-10-13 08:40:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:26,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:26,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 08:40:26,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:40:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2247 [2020-10-13 08:40:26,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:40:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:40:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:40:26,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:40:27,255 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 29 [2020-10-13 08:40:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:27,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:27,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:27,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:27,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:40:27,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:40:27,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:27,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:27,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:27,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:40:27,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:27,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 08:40:27,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:40:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:40:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:27,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830366282] [2020-10-13 08:40:27,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:27,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:40:27,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681451414] [2020-10-13 08:40:27,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:40:27,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:27,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:40:27,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:40:27,688 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 6 states. [2020-10-13 08:40:28,774 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-13 08:40:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:46,404 INFO L93 Difference]: Finished difference Result 3898 states and 6364 transitions. [2020-10-13 08:40:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:40:46,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2020-10-13 08:40:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:46,417 INFO L225 Difference]: With dead ends: 3898 [2020-10-13 08:40:46,418 INFO L226 Difference]: Without dead ends: 1938 [2020-10-13 08:40:46,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:40:46,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2020-10-13 08:40:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1934. [2020-10-13 08:40:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-13 08:40:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3161 transitions. [2020-10-13 08:40:46,480 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3161 transitions. Word has length 125 [2020-10-13 08:40:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:46,481 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3161 transitions. [2020-10-13 08:40:46,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:40:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3161 transitions. [2020-10-13 08:40:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 08:40:46,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:46,485 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] [2020-10-13 08:40:46,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:40:46,485 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:46,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1862326671, now seen corresponding path program 1 times [2020-10-13 08:40:46,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:46,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662029657] [2020-10-13 08:40:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:46,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:48,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:48,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:40:48,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:40:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1585 [2020-10-13 08:40:48,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:40:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:40:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:48,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:48,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:48,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:40:48,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:48,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:48,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:48,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:48,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:40:48,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:40:48,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 08:40:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:40:48,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:48,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662029657] [2020-10-13 08:40:48,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:40:48,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:40:48,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219633625] [2020-10-13 08:40:48,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:48,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:48,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:48,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:48,362 INFO L87 Difference]: Start difference. First operand 1934 states and 3161 transitions. Second operand 5 states. [2020-10-13 08:41:08,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:08,832 INFO L93 Difference]: Finished difference Result 5593 states and 9295 transitions. [2020-10-13 08:41:08,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:08,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-13 08:41:08,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:08,859 INFO L225 Difference]: With dead ends: 5593 [2020-10-13 08:41:08,859 INFO L226 Difference]: Without dead ends: 3665 [2020-10-13 08:41:08,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:41:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2020-10-13 08:41:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3614. [2020-10-13 08:41:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3614 states. [2020-10-13 08:41:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5689 transitions. [2020-10-13 08:41:09,001 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5689 transitions. Word has length 132 [2020-10-13 08:41:09,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:09,003 INFO L479 AbstractCegarLoop]: Abstraction has 3614 states and 5689 transitions. [2020-10-13 08:41:09,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:41:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5689 transitions. [2020-10-13 08:41:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 08:41:09,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:09,020 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] [2020-10-13 08:41:09,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:41:09,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:09,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1846807953, now seen corresponding path program 1 times [2020-10-13 08:41:09,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:09,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221493558] [2020-10-13 08:41:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:10,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:10,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-10-13 08:41:10,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:10,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:41:10,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:41:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:41:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:41:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:11,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:11,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:41:11,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:11,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:11,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:11,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:41:11,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:11,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 08:41:11,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:41:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:41:11,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:11,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221493558] [2020-10-13 08:41:11,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:41:11,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:41:11,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402917322] [2020-10-13 08:41:11,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:41:11,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:11,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:41:11,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:41:11,336 INFO L87 Difference]: Start difference. First operand 3614 states and 5689 transitions. Second operand 6 states. [2020-10-13 08:41:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:38,662 INFO L93 Difference]: Finished difference Result 10500 states and 16826 transitions. [2020-10-13 08:41:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:41:38,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-13 08:41:38,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:38,708 INFO L225 Difference]: With dead ends: 10500 [2020-10-13 08:41:38,708 INFO L226 Difference]: Without dead ends: 6861 [2020-10-13 08:41:38,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:41:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2020-10-13 08:41:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 6857. [2020-10-13 08:41:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6857 states. [2020-10-13 08:41:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6857 states to 6857 states and 9569 transitions. [2020-10-13 08:41:38,927 INFO L78 Accepts]: Start accepts. Automaton has 6857 states and 9569 transitions. Word has length 132 [2020-10-13 08:41:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:38,929 INFO L479 AbstractCegarLoop]: Abstraction has 6857 states and 9569 transitions. [2020-10-13 08:41:38,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:41:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6857 states and 9569 transitions. [2020-10-13 08:41:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 08:41:38,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:38,934 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] [2020-10-13 08:41:38,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:41:38,935 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:38,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:38,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1420311657, now seen corresponding path program 1 times [2020-10-13 08:41:38,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:38,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300422563] [2020-10-13 08:41:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:39,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:39,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:41:39,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:41:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-13 08:41:39,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:41:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:41:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:41:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:40,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:40,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:40,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:41:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:40,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:40,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:41:40,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 08:41:40,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:41:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:40,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300422563] [2020-10-13 08:41:40,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:41:40,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:41:40,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231354741] [2020-10-13 08:41:40,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:41:40,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:40,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:41:40,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:41:40,310 INFO L87 Difference]: Start difference. First operand 6857 states and 9569 transitions. Second operand 5 states. [2020-10-13 08:42:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:00,261 INFO L93 Difference]: Finished difference Result 17050 states and 23827 transitions. [2020-10-13 08:42:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:42:00,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-13 08:42:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:00,308 INFO L225 Difference]: With dead ends: 17050 [2020-10-13 08:42:00,308 INFO L226 Difference]: Without dead ends: 10199 [2020-10-13 08:42:00,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:42:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10199 states. [2020-10-13 08:42:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10199 to 10146. [2020-10-13 08:42:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10146 states. [2020-10-13 08:42:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10146 states to 10146 states and 13791 transitions. [2020-10-13 08:42:00,552 INFO L78 Accepts]: Start accepts. Automaton has 10146 states and 13791 transitions. Word has length 139 [2020-10-13 08:42:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:00,552 INFO L479 AbstractCegarLoop]: Abstraction has 10146 states and 13791 transitions. [2020-10-13 08:42:00,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:42:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10146 states and 13791 transitions. [2020-10-13 08:42:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 08:42:00,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:00,557 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] [2020-10-13 08:42:00,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:42:00,557 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:00,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:00,558 INFO L82 PathProgramCache]: Analyzing trace with hash 435672063, now seen corresponding path program 1 times [2020-10-13 08:42:00,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:00,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054347915] [2020-10-13 08:42:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:01,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:01,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 08:42:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:42:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-13 08:42:01,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:42:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:42:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:42:01,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:01,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:01,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:01,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:01,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:42:01,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:01,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:01,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:01,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:42:01,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:42:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:42:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:01,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054347915] [2020-10-13 08:42:01,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:01,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:01,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681660470] [2020-10-13 08:42:01,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:01,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:01,643 INFO L87 Difference]: Start difference. First operand 10146 states and 13791 transitions. Second operand 5 states. [2020-10-13 08:42:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:21,385 INFO L93 Difference]: Finished difference Result 25275 states and 35684 transitions. [2020-10-13 08:42:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:42:21,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-13 08:42:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:21,445 INFO L225 Difference]: With dead ends: 25275 [2020-10-13 08:42:21,445 INFO L226 Difference]: Without dead ends: 15135 [2020-10-13 08:42:21,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:42:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15135 states. [2020-10-13 08:42:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15135 to 15120. [2020-10-13 08:42:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15120 states. [2020-10-13 08:42:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15120 states to 15120 states and 19746 transitions. [2020-10-13 08:42:21,886 INFO L78 Accepts]: Start accepts. Automaton has 15120 states and 19746 transitions. Word has length 151 [2020-10-13 08:42:21,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:21,887 INFO L479 AbstractCegarLoop]: Abstraction has 15120 states and 19746 transitions. [2020-10-13 08:42:21,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:42:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 15120 states and 19746 transitions. [2020-10-13 08:42:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 08:42:21,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:21,890 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] [2020-10-13 08:42:21,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:42:21,891 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash 633324377, now seen corresponding path program 1 times [2020-10-13 08:42:21,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:21,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167413947] [2020-10-13 08:42:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:21,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:22,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:23,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:23,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 08:42:23,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:42:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-13 08:42:23,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 08:42:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:42:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:23,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:23,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:23,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:23,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:23,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:23,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:42:23,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:23,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:23,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:23,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:23,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:23,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:42:23,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:42:23,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:42:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:23,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167413947] [2020-10-13 08:42:23,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:23,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:23,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012747851] [2020-10-13 08:42:23,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:23,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:23,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:23,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:23,468 INFO L87 Difference]: Start difference. First operand 15120 states and 19746 transitions. Second operand 5 states. [2020-10-13 08:42:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:39,758 INFO L93 Difference]: Finished difference Result 30261 states and 39551 transitions. [2020-10-13 08:42:39,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:42:39,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 08:42:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:39,812 INFO L225 Difference]: With dead ends: 30261 [2020-10-13 08:42:39,812 INFO L226 Difference]: Without dead ends: 15124 [2020-10-13 08:42:39,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:42:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15124 states. [2020-10-13 08:42:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15124 to 15120. [2020-10-13 08:42:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15120 states. [2020-10-13 08:42:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15120 states to 15120 states and 19744 transitions. [2020-10-13 08:42:40,145 INFO L78 Accepts]: Start accepts. Automaton has 15120 states and 19744 transitions. Word has length 152 [2020-10-13 08:42:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:40,146 INFO L479 AbstractCegarLoop]: Abstraction has 15120 states and 19744 transitions. [2020-10-13 08:42:40,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:42:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 15120 states and 19744 transitions. [2020-10-13 08:42:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 08:42:40,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:40,150 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] [2020-10-13 08:42:40,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:42:40,150 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:40,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1016650103, now seen corresponding path program 1 times [2020-10-13 08:42:40,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:40,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787499314] [2020-10-13 08:42:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:40,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:41,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:41,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:41,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1538 [2020-10-13 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-13 08:42:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:42:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:41,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:41,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:41,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:41,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:41,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:42:41,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:41,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:41,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:41,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:41,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:41,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:41,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:42:41,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:42:41,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:42:41,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:42,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787499314] [2020-10-13 08:42:42,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:42,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:42,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625537265] [2020-10-13 08:42:42,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:42,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:42,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:42,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:42,034 INFO L87 Difference]: Start difference. First operand 15120 states and 19744 transitions. Second operand 5 states. [2020-10-13 08:43:15,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:15,308 INFO L93 Difference]: Finished difference Result 35143 states and 47806 transitions. [2020-10-13 08:43:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:15,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 08:43:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:15,414 INFO L225 Difference]: With dead ends: 35143 [2020-10-13 08:43:15,414 INFO L226 Difference]: Without dead ends: 20029 [2020-10-13 08:43:15,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:15,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20029 states. [2020-10-13 08:43:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20029 to 20014. [2020-10-13 08:43:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20014 states. [2020-10-13 08:43:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20014 states to 20014 states and 26600 transitions. [2020-10-13 08:43:15,905 INFO L78 Accepts]: Start accepts. Automaton has 20014 states and 26600 transitions. Word has length 155 [2020-10-13 08:43:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:15,906 INFO L479 AbstractCegarLoop]: Abstraction has 20014 states and 26600 transitions. [2020-10-13 08:43:15,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 20014 states and 26600 transitions. [2020-10-13 08:43:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 08:43:15,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:15,910 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] [2020-10-13 08:43:15,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:43:15,910 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:15,910 INFO L82 PathProgramCache]: Analyzing trace with hash 232361011, now seen corresponding path program 1 times [2020-10-13 08:43:15,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:15,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097960877] [2020-10-13 08:43:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:15,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:16,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:43:16,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:43:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-13 08:43:16,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 08:43:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:43:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:16,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:16,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:16,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:16,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:16,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:43:16,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:16,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:16,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:17,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:17,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:17,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:43:17,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 08:43:17,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 08:43:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:17,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097960877] [2020-10-13 08:43:17,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:17,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:17,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892725276] [2020-10-13 08:43:17,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:17,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:17,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:17,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:17,194 INFO L87 Difference]: Start difference. First operand 20014 states and 26600 transitions. Second operand 5 states. [2020-10-13 08:43:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:46,005 INFO L93 Difference]: Finished difference Result 57074 states and 77919 transitions. [2020-10-13 08:43:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:46,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 08:43:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:46,152 INFO L225 Difference]: With dead ends: 57074 [2020-10-13 08:43:46,153 INFO L226 Difference]: Without dead ends: 37066 [2020-10-13 08:43:46,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37066 states. [2020-10-13 08:43:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37066 to 37052. [2020-10-13 08:43:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37052 states. [2020-10-13 08:43:46,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37052 states to 37052 states and 46539 transitions. [2020-10-13 08:43:46,848 INFO L78 Accepts]: Start accepts. Automaton has 37052 states and 46539 transitions. Word has length 157 [2020-10-13 08:43:46,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:46,849 INFO L479 AbstractCegarLoop]: Abstraction has 37052 states and 46539 transitions. [2020-10-13 08:43:46,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:46,849 INFO L276 IsEmpty]: Start isEmpty. Operand 37052 states and 46539 transitions. [2020-10-13 08:43:46,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 08:43:46,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:46,854 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] [2020-10-13 08:43:46,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:43:46,854 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:46,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:46,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1998029602, now seen corresponding path program 1 times [2020-10-13 08:43:46,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:46,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906513328] [2020-10-13 08:43:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:48,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:48,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:43:48,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:43:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-13 08:43:48,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-13 08:43:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:43:48,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:48,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:48,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:43:48,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:48,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:48,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 08:43:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:48,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:43:48,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:43:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:48,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906513328] [2020-10-13 08:43:48,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:48,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:48,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904937613] [2020-10-13 08:43:48,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:48,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:48,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:48,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:48,395 INFO L87 Difference]: Start difference. First operand 37052 states and 46539 transitions. Second operand 5 states.